WO2001082425A1 - Generateur d'oxygene excite par une decharge haute frequence pour laser a iode et procede de generation d'oxygene correspondant - Google Patents
Generateur d'oxygene excite par une decharge haute frequence pour laser a iode et procede de generation d'oxygene correspondant Download PDFInfo
- Publication number
- WO2001082425A1 WO2001082425A1 PCT/JP2001/003422 JP0103422W WO0182425A1 WO 2001082425 A1 WO2001082425 A1 WO 2001082425A1 JP 0103422 W JP0103422 W JP 0103422W WO 0182425 A1 WO0182425 A1 WO 0182425A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- gas
- anode
- sword
- excited oxygen
- plasma channel
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/14—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range characterised by the material used as the active medium
- H01S3/22—Gases
- H01S3/2215—Iodine compounds or atomic iodine
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/02—Constructional details
- H01S3/03—Constructional details of gas laser discharge tubes
- H01S3/038—Electrodes, e.g. special shape, configuration or composition
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/14—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range characterised by the material used as the active medium
- H01S3/22—Gases
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/02—Constructional details
- H01S3/03—Constructional details of gas laser discharge tubes
- H01S3/036—Means for obtaining or maintaining the desired gas pressure within the tube, e.g. by gettering, replenishing; Means for circulating the gas, e.g. for equalising the pressure within the tube
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/09—Processes or apparatus for excitation, e.g. pumping
- H01S3/097—Processes or apparatus for excitation, e.g. pumping by gas discharge of a gas laser
Definitions
- the present invention relates to an apparatus and a method for generating excited oxygen that is mainly supplied to an iodine laser apparatus, and particularly to a high-frequency discharge type excited oxygen generator.
- Iodine lasers are expected to be used as industrial lasers because of their good light quality and good fiber-guided light.
- an iodine laser is oscillated by an iodine laser device 20 having a chemically excited oxygen generator 21 shown in FIG. 1 and FIG.
- a sodium hydroxide solution is added to a hydrogen peroxide solution, and chlorine gas is bubbled into the mixed solution to generate singlet excited oxygen (0 2 (1 ⁇ )) (hereinafter sometimes simply referred to as excited oxygen) is produced. Since the generated excited oxygen is generated by a wet method, the generated excited oxygen contains moisture. Therefore, a water vapor trap 22 is provided to remove water in the excited oxygen.
- the water vapor trap 22 freezes the water vapor contained in the excited oxygen on the rotating disk 23 and removes it with a scraper (not shown). This removes water vapor. For this reason, a large number of rotating disks 23 are provided in the water vapor trap 22. As a result, the water vapor trap 22 becomes larger and the rotating disc 23 cools. The energy required for dismantling and the energy required for its rotation will also be considerable. Therefore, the equipment cost and the running cost naturally increase. Also, chlorine gas, hydrogen peroxide solution and aqueous sodium hydroxide solution used as raw materials are expensive, which also increases running costs.
- the aqueous solution in which chlorine gas used to generate the excited oxygen is bubbled produces NaC1 by a chemical reaction, and the unreacted hydrogen peroxide solution and the sodium hydroxide solution are removed.
- Wastewater treatment equipment is required for recycling. Excess chlorine gas during bubbling of chlorine gas and hydrogen chloride gas generated as a by-product during the bubbling process are also harmful gases, so exhaust gas treatment equipment is also required. The necessity of each of these processing facilities also contributes to an increase in the size and cost of the iodine laser device 20 having the chemically excited oxygen generator 21.
- the iodine laser device having the chemically excited oxygen generator has such a problem. Therefore, the present inventors have proposed a so-called dry RF discharge type that does not use the chemically excited oxygen generator.
- An iodine laser device having an excited oxygen generator was developed (Japanese Patent Application Laid-Open No. Hei 7-254 738).
- Fig. 3 shows this iodine laser device.
- the RF discharge-type excited oxygen generator 25 shown in this figure is designed to select the form of the holo-power sword appropriately in the RF discharge, the flow rate of oxygen gas passing through the holo-power sword, the internal pressure of the holo, and the injection. RF discharge is performed by appropriately selecting power and the like, and excited oxygen is generated in the plasma layer between neutral plasma that has not been converted into plasma and a part of the glow.
- the singlet excited oxygen generated by the RF discharge-type excited oxygen generator 25 transfers energy to iodine atoms in the laser oscillator 26 and oscillates one laser.
- This oxygen laser device includes an RF discharge type excited oxygen generator 25, a laser oscillator 26 provided downstream of the RF discharge type excited oxygen generator 25, and a laser oscillator 26.
- An iodine trap 27 provided downstream and below the iodine trap 27
- a gas circulation blower 28 provided in the flow, an iodine vaporizer 29 for supplying iodine atoms to the laser oscillator 26, and a vacuum pump 3 for maintaining the inside of the laser oscillator 26 at a constant vacuum pressure. 0 is provided.
- Singlet excited oxygen is generated by the RF discharge type excited oxygen generator 25, and in the laser single oscillator 26, the energy transfer of the singlet excited oxygen to iodine atoms from the iodine vaporizer 29 is performed and laser oscillation is not performed. Is done.
- the inventor has prototyped a silicon laser device provided with the above-described RF discharge type excited oxygen generator.
- the iodine laser device equipped with the RF discharge type excited oxygen generator shown in the figure could not actually oscillate the iodine laser. This is because the RF discharge type excited oxygen generator could not efficiently generate singlet excited oxygen.
- the present invention has been developed for the purpose of efficiently generating excited oxygen and oscillating an iodine laser. To provide a type-excited oxygen generator.
- the high-frequency discharge-type excited oxygen generator for an iodine laser of the present invention includes a hollow channel 2 opening a plasma channel 3 and a discharge side of a plasma channel 3 penetrating the hollow channel 2.
- An anode 4 disposed insulated from the hollow power source 2 and a high frequency power supply 5 for supplying high frequency power between the anode 4 and the hollow power source 2 .
- This excited oxygen generator supplies 02 gas or a mixed gas obtained by mixing 02 gas or another gas to the plasma channel 3 of the holo-forced sword 2 to generate singlet excited oxygen.
- the high-frequency discharge-type excited oxygen generator supplies NO gas to the supply side of the plasma channel 3 of the holo-powered sword 2 toward the center of the plasma channel 3.
- Injector 10 is provided.
- the injector 10 supplies NO gas to the center of the plasma channel 3.
- the NO gas supplied here is efficiently excited without being dissociated into nitrogen and oxygen in the plasma channel 3, and the energy is used to excite the ⁇ 2 gas into excited oxygen.
- the high-frequency discharge type excited oxygen generator supplies N2 gas, N2 gas and 02 gas to the plasma channel 3 of the injector 10, and excites 02 gas with N2 gas and N2 gas to produce excited oxygen.
- the excited oxygen generator supplies NO gas, not N2 gas, to the center of the plasma channel 3 because the dissociation energy of NO gas is smaller than that of N2 gas and it is easily dissociated.
- the dissociation energy of N 2 O gas is 6.479 eV
- the dissociation energy of N 2 gas is 9.760 eV.
- the generator supplies the easily dissociated N 2 O gas to the center of the plasma channel 3 at the time of injection 10. Since the electron density is low at the center of the plasma channel 3, the probability of being excited by electrons and dissociating is low. Therefore, the N 2 O gas supplied here can be excited oxygen that excites the 02 gas without being dissociated.
- N2 gas has a high dissociation energy, and therefore has a low probability of being dissociated even if it passes through the region of the plasma channel 3 where the electron density is high. Furthermore, even if it is dissociated, it is still nitrogen, so it becomes N2 gas and can excite 02 gas. Therefore, instead of N 2 gas, N 2 gas having low dissociation energy is supplied to the center of the plasma channel 3 so that excited oxygen can be obtained by exciting ⁇ 2 gas with both N 2 gas and N 2 gas.
- the injector 10 is preferably formed in a conical shape that is narrowed down toward the plasma channel 3 of the holo-powered sword 2 so that the NO gas can be efficiently narrowed down and supplied to the central portion of the plasma channel 3.
- the injector 10 can be manufactured in aluminum.
- the anode 4 can be formed in a cylindrical shape, and the cylindrical anode 4 can be opened from the outside to the inside to open the injector hole 11.
- the injector holes 11 inject N 02 gas into the anode 4.
- oxygen is generated in the plasma channel 3 by discharging oxygen at a dissociation energy of 5.116 V or more, whereby 0 is generated.
- the 0 generated here generates ozone and reduces the generation efficiency of excited oxygen.
- the N 02 gas injected into the anode 4 from the injector hole 11 removes ⁇ generated inside the anode 4 by the following equation.
- an injection hole 11 opening into the cylindrical anode 4 injects an inert cooling gas into the anode 4 to cool the plasma jet 8 and efficiently generate excited oxygen. It can also be done.
- an inert cooling gas argon, helium, N2 gas, or the like can be used.
- the high-frequency discharge type excited oxygen generator of the present invention can apply a magnetic field in the direction of the plasma jet 8 generated inside the anode 4.
- the magnetic field can be generated, for example, by disposing an excitation coil 12 outside the anode 4 and energizing the excitation coil 12 or disposing a permanent magnet 13 outside the anode 4 to form a magnetic field A magnetic field can be applied to the surface.
- the magnetic field in the direction of the plasma jet 8 gives the charged particles centripetal force due to Lorentz force, narrows the plasma jet 8 to improve energy efficiency, and generates excited oxygen more efficiently.
- the high-frequency discharge type excited oxygen generation method of the present invention further comprises the steps of: providing a hollow channel 2 opening the plasma channel 3 and a hollow channel discharging side of the plasma channel 3 penetrating the hollow channel 2; High-frequency power is supplied between the power node 2 and the node 4 that is insulated from the power node 2, and the plasma channel 3 of the holo O 2 gas or a mixture of O 2 gas and another gas is supplied to generate singlet excited oxygen. Further, in the high-frequency discharge type excited oxygen generation method of the present invention, the NO gas is supplied to the center of the plasma channel 3 on the supply side of the plasma channel 3 of the hollow cathode 2.
- N 2 O gas is supplied to the central portion of the plasma channel 3 of the hollow power source 2, and gas containing 02 gas is supplied around the plasma channel 3.
- N 02 gas can be injected inside the anode 4.
- the plasma jet 8 can be cooled by injecting an inert cooling gas into the inside of the anode 4.
- a magnetic field can be applied in the direction of the plasma jet 8 generated inside the anode 4.
- Fig. 1 is a schematic configuration diagram of a conventional iodine laser device having a chemically excited oxygen generator.
- Fig. 2 is a perspective view of the iodine laser device shown in Fig. 1.
- Fig. 3 is a schematic configuration diagram of the iodine laser device developed earlier by the inventor.
- FIG. 4 is a schematic cross-sectional view of a high-frequency discharge type excited oxygen generator according to Example 1 of the present invention.
- FIG. 5 is a schematic cross-sectional view of a high-frequency discharge type excited oxygen generator according to Example 2 of the present invention.
- FIG. 7 is a schematic cross-sectional view of a high-frequency discharge type excited oxygen generator according to a third embodiment of the present invention.
- FIG. 8 is a schematic cross-sectional view of a high-frequency discharge type excited oxygen generator according to a fourth embodiment of the present invention.
- FIG. 1 is a schematic cross-sectional view of a discharge type excited oxygen generator. The high-frequency discharge-type excited oxygen generator 1 shown in FIGS.
- This high-frequency discharge-type excited oxygen generator 1 supplies a single gas with a ⁇ 2 gas or a mixture of ⁇ 2 gas and another gas to a plasma channel 3 of a hollow single-sword 2. Generate Singlet excited oxygen is supplied to an iodine laser oscillator to oscillate an iodine laser.
- the hollow casing 2 is made of aluminum, has a cylindrical shape as a whole, is provided with a thick closing portion 6 at the tip, and a plasma channel 3 is opened through the center of the closing portion 6.
- the holo force sword 2 is made of a conductive metal because it is subjected to high-frequency discharge between the anode 4 and the sword.
- the aluminum holo sword 2 can generate excited oxygen efficiently. This is because even if the excited oxygen comes into contact with aluminum, the oxygen can be maintained in the excited state.
- the closed part 6 has a thickness of about 4 mm and an inner diameter of the plasma channel 3 of about 3 mm.
- the generator of the present invention does not specify the thickness of the closed portion 6 of the holing force sword 2 and the size of the plasma channel 3.
- the thickness of the closing part can be, for example, 2 to 30 mm, preferably 3 to 20 mm, and the inner diameter of the plasma channel is 1.5 to 20 mm, preferably 2 to 10 mm. You can also.
- the anode 4 is also made of aluminum for the same reasons as the hollow cathode 2.
- the anode 4 is fixed to the hollow sword 2 via the insulating material 7.
- the anode 4 in the figure has a cylindrical shape and is arranged coaxially with the plasma channel 3 of the holo-powered sword 2.
- the lower end of the anode 4 in the figure is hermetically closed with an insulating material 7.
- the insulating material 7 is airtightly connected to the upper end of the hollow power source 2, and fixes the anode 4 to the hollow power source 2.
- the insulating material 7 is made of ceramic or heat-resistant plastic.
- the anode 4 has an inner diameter larger than that of the plasma channel 3 and has a shape capable of jetting a plasma jet 8 from the plasma channel 3 into the inside as shown in the figure.
- the plasma jet 8 injected from the anode 4 excites the 02 gas to generate singlet excited oxygen.
- the singlet excited oxygen is supplied to an iodine laser oscillator to oscillate an iodine laser. Therefore, the tip opening of the anode 4 is connected to the iodine laser oscillator.
- the high-frequency power supply 5 supplies high-frequency power to the anode 4 and the hollow casing 2 via the matching circuit 9.
- the frequency of the high-frequency power supply 5 is preferably 1 MHz to 500 MHz, preferably 5 MHz to 300 MHz, and more preferably 10 MHz to 100 MHz.
- the output of the high frequency power supply 5 is about 100 W.
- the optimal output of the high-frequency power source varies depending on the shape of the hollow sword and anode, and the amount of excited oxygen generated.Therefore, when increasing the amount of excited oxygen generated, or increasing the hollow sword or anode If so, increase the output of the high-frequency power supply.
- the high-frequency power supply 5 has a matching circuit 9 connected to the output side in order to efficiently transmit the output to the anode 4 and the hollow sword 2.
- the matching circuit 9 matches the output impedance of the high-frequency power source 5 with the impedance between the hollow cathode 2 and the anode 4 to efficiently supply the high-frequency power to the hollow cathode 2 and the anode 4 I do.
- the holo-powered sword 2 shown in FIG. 4 is provided with an injector 10 for supplying NO gas toward the center of the plasma channel 3 below the plasma jet 8 on the supply side of the plasma channel 3.
- the injector 10 is manufactured in aluminum.
- the injector 10 in the figure has a conical shape that gradually narrows down toward the plasma channel 3 of the holopower sword 2.
- the injection nozzle does not necessarily need to be formed in a conical shape, but may have any shape that can supply NO gas to the center of the plasma channel. For example, toward the tip Secondly, the shape of the exponential horn can be reduced.
- the size of the opening at the tip is reduced to be smaller than the inner diameter of the plasma channel 3 in order to supply N 2 gas to the center of the plasma channel 3.
- the injector 10 preferably has a tip opening area of 10 to 50%, more preferably 10 to 40%, and most preferably about 25% of the opening area of the plasma channel 3. . Further, the tip of the injector 10 approaches the opening of the plasma channel 3 or is inserted from the opening of the plasma channel 3 to the inside.
- the high-frequency discharge-type excited oxygen generator 1 shown in FIG. 1 supplies ⁇ 2 gas from a gas supply source (not shown) to the lower end opening of the hollow sword 2 or mixes ⁇ 2 gas and N2 gas.
- a supply gas is supplied, and NO gas is supplied to the injector 10 from a NO gas supply source (not shown).
- Supplied NO gas is supplied to the central portion of the plasma channel 3, Rei_2 gas on the outside or the gas mixture gas of Rei_2 gas and N2 gas is supplied to the c the plasma channel 3 to be supplied, It is ejected from the plasma channel 3 into the inside of the anode 4.
- the high-frequency discharge type excited oxygen generator 1 is for extracting singlet excited oxygen generated by the plasma jet 8 and supplying it to the iodine laser.
- the inner diameter of the plasma channel 3 is 3 mm
- the thickness of the closed portion 6 is 4 mm
- the flow rate of the gas 2 is 200 sccm
- the flow rate of the NO gas is 40 sccm
- Pressure of mixed gas supplied to force sword 2 With the pressure of 0.5 Torr, the output of the high frequency power supply 5 at 200 W, and the frequency of the high frequency power supply 5 at 100 MHz, singlet excited oxygen can be obtained efficiently.
- secm which indicates the flow rate, is the flow rate for one minute at 15 ° C and 7500 torr expressed in cc.
- the flow rate of N2 gas is 1 sccm.
- the high-frequency discharge type excited oxygen generator 1 shown in FIG. 5 has an injection hole 11 penetrating from the outside to the inside of the cylindrical anode 4.
- the injector hole 11 is opened below the anode 4 in the figure, in other words, at a position close to the opening of the plasma channel 3. Further, the injector hole 11 shown in the figure is opened to penetrate the anode 4 in the radial direction.
- One or more injector holes 11 are provided.
- the injector holes 11 either or both of the N 2 gas and the inert cooling gas are injected into the anode 4.
- the injector holes 11 preferably inject both NO 2 gas and an inert cooling gas into the anode 4.
- the anode 4 that injects both the N 2 O gas and the inert cooling gas opens a plurality of injector holes 11 to separately inject the N 02 gas and the inert cooling gas.
- the injector hole can be injected by mixing N02 gas and an inert cooling gas.
- the N 02 gas injected into the anode 4 from the injection hole 11 removes O generated inside the anode 4.
- N02 gas removes ⁇ , the amount of ozone is reduced, so that excited oxygen can be generated efficiently.
- the inert cooling gas injected into the inside of the anode 4 from the injector hole 11 cools the inside of the anode 4 to efficiently generate excited oxygen. Therefore, a structure that injects an inert cooling gas can also generate excited oxygen efficiently.
- helium-N2 gas can also be used for this gas.
- the injector hole 11 is connected to a gas source (not shown) and injects N02 gas or an inert cooling gas into the anode 4.
- the flow rate of the N02 gas is preferably 20 sccm, and the flow rate of the inert cooling gas is preferably 40 sccm.
- the high-frequency discharge-type excited oxygen generator 1 shown in FIG. 5 has no injector, a mixed gas of 02 gas and NO gas is supplied to the plasma channel 3 of the hollow power source 2.
- a gas to which N2 gas is added can be supplied to the holo one-sided sword.
- the inner diameter of the plasma channel 3 is 3 mm
- the thickness of the closed part 6 is 4 mm
- the flow rate of the 02 gas is 200 sccm
- the flow rate of the NO gas is 40 sccm.
- the gas flow rate is 20 sccm
- the pressure of the mixed gas to be supplied to the holo sword 2 is 5 OTo rr
- the pressure in the anode 4 is 0.5 To rr
- the output of the high frequency power supply 5 is 200 W
- the frequency of the high frequency power supply 5 With 100 MHz, singlet excited oxygen can be obtained efficiently.
- the flow rate shall be 1 sccm.
- the gas injected from the injection hole 11 toward the plasma jet 8 was changed from N02 gas to an inert cooling gas such as argon or helium gas and the injection flow rate was set to 40 sccm, In the same way as above, singlet excited oxygen can be generated efficiently.
- the gas injected from the injector hole 11 toward the plasma jet 8 is used as a NO 2 gas having a flow rate of 10 sccm and an inert cooling gas having a flow rate of 20 sccm, and singlet excited oxygen is also used. It can be generated efficiently.
- the high-frequency discharge excitation oxygen generator 1 shown in FIG. 6 has an excitation coil 12 disposed outside the anode 4 and applies a magnetic field inside the anode 4. Apply a magnetic field
- the direction is the direction in which the plasma jet 8 is ejected, as indicated by the arrow in the figure.
- the strength of the magnetic field in the anode 4 is preferably 10,000 gauss.
- the magnetic field in the anode can be 1000 to 50,000 gauss. Since the magnetic field narrows the plasma jet 8 to improve energy efficiency and generate excited oxygen more efficiently, the intensity can be increased to focus the plasma jet 8 more efficiently.
- the strength of the magnetic field can be controlled by the current flowing through the exciting coil 12 and the number of turns of the coil.
- a magnetic field can be applied to the plasma jet 8 using a permanent magnet 13 as shown in FIG. This structure can apply a magnetic field to the plasma jet 8 without consuming power.
- the high-frequency discharge-type excited oxygen generator 1 in FIG. 6 has no injector, a gas obtained by mixing 02 gas and NO gas is supplied to the holo-power source 2.
- a mixed gas of 02 gas, NO gas and N2 gas can also be supplied to the horo one-sided sword.
- this generator does not supply N02 gas / inert cooling gas from the injector holes because there are no injector holes.
- the inner diameter of the plasma channel 3 is 3 mm
- the thickness of the closed part 6 is 4 mm
- the flow rate of the ⁇ 2 gas is 200 sccm
- the flow rate of the NO gas is 40 sccm.
- the high-frequency discharge excitation oxygen generator 1 shown in FIGS. 4 to 6 is provided with an injector, an injector hole, or a magnetic field applied to the anode to efficiently generate excited oxygen. Therefore, as shown in FIG. 8, the high-frequency discharge-type excited oxygen generator 1 in which the injector 10 and the injector hole 11 are provided and a magnetic field is applied to the anode 4 is most often used. Excited oxygen can be generated efficiently.
- the high-frequency discharge type excited oxygen generator and the high-frequency discharge type excited oxygen generation method of the present invention since N 2 O gas is supplied to the center of the plasma channel, dissociation of the N 2 O gas is prevented and excited oxygen can be efficiently generated. Therefore, it is used as an industrial laser.
- the N02 gas injected into the anode 4 removes O generated inside the anode, effectively prevents O from becoming ozone, and excites the ozone. It is possible to effectively prevent a decrease in the oxygen generation efficiency.
- the injector that opens an injector hole in the anode and injects N02 gas into the inside of the anode from this injector hole efficiently supplies the N02 gas into the anode to effectively generate ozone. Can be prevented.
- the apparatus for cooling the plasma jet by injecting an inert cooling gas into the anode according to the present invention can efficiently generate excited oxygen.
- a device in which an injector hole is opened in a cylindrical anode and an inert cooling gas such as argon is injected from the injector hole can efficiently supply the cooling gas to the inside of the anode and effectively cool the anode. .
- the magnetic field applied in the direction of the plasma jet of the anode according to the present invention can improve the energy efficiency by narrowing the plasma jet narrowly, and can generate excited oxygen more efficiently.
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Optics & Photonics (AREA)
- Lasers (AREA)
- Oxygen, Ozone, And Oxides In General (AREA)
- Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2001248813A AU2001248813A1 (en) | 2000-04-21 | 2001-04-20 | High-frequency discharge excited oxygen generator for iodine laser and high-frequency discharge excited oxygen generating method |
EP01921970A EP1283568A1 (en) | 2000-04-21 | 2001-04-20 | High-frequency discharge excited oxygen generator for iodine laser and high-frequency discharge excited oxygen generating method |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2000-121846 | 2000-04-21 | ||
JP2000121846A JP3340417B2 (ja) | 2000-04-21 | 2000-04-21 | ヨウ素レーザー用の高周波放電型励起酸素発生器と高周波放電型励起酸素発生方法 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2001082425A1 true WO2001082425A1 (fr) | 2001-11-01 |
Family
ID=18632409
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2001/003422 WO2001082425A1 (fr) | 2000-04-21 | 2001-04-20 | Generateur d'oxygene excite par une decharge haute frequence pour laser a iode et procede de generation d'oxygene correspondant |
Country Status (7)
Country | Link |
---|---|
US (1) | US20030161372A1 (ja) |
EP (1) | EP1283568A1 (ja) |
JP (1) | JP3340417B2 (ja) |
CN (1) | CN1423854A (ja) |
AU (1) | AU2001248813A1 (ja) |
RU (1) | RU2002131258A (ja) |
WO (1) | WO2001082425A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105281183A (zh) * | 2014-07-16 | 2016-01-27 | 中国科学院大连化学物理研究所 | 一种实现高工作压力碘激光增益介质的结构及方法 |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20130015766A1 (en) * | 2011-05-12 | 2013-01-17 | The George Washington University | Apparatus for generating mini and micro plasmas and methods of use |
US10300551B2 (en) * | 2016-11-14 | 2019-05-28 | Matthew Fagan | Metal analyzing plasma CNC cutting machine and associated methods |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07254738A (ja) * | 1994-03-14 | 1995-10-03 | Kawasaki Heavy Ind Ltd | ヨウ素レーザーおよび装置 |
JPH11103107A (ja) * | 1997-09-26 | 1999-04-13 | Kawasaki Heavy Ind Ltd | ヨウ素レーザ発生装置 |
JPH11298069A (ja) * | 1998-04-09 | 1999-10-29 | Kawasaki Heavy Ind Ltd | ヨウ素レーザにおけるヨウ素混合ノズル |
JP2000012945A (ja) * | 1998-06-26 | 2000-01-14 | Kawasaki Heavy Ind Ltd | 励起酸素ヨウ素レーザ発生方法および装置 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6076810A (en) * | 1997-10-21 | 2000-06-20 | Exxon Research And Engineering Co. | Throat and cone gas injector and gas distribution grid for slurry reactor |
US6501780B2 (en) * | 2000-04-13 | 2002-12-31 | Cu Aerospace | Method, system and apparatus for an electrically assisted chemical oxygen iodine laser |
-
2000
- 2000-04-21 JP JP2000121846A patent/JP3340417B2/ja not_active Expired - Fee Related
-
2001
- 2001-04-20 WO PCT/JP2001/003422 patent/WO2001082425A1/ja not_active Application Discontinuation
- 2001-04-20 US US10/258,132 patent/US20030161372A1/en not_active Abandoned
- 2001-04-20 RU RU2002131258/28A patent/RU2002131258A/ru not_active Application Discontinuation
- 2001-04-20 EP EP01921970A patent/EP1283568A1/en not_active Withdrawn
- 2001-04-20 AU AU2001248813A patent/AU2001248813A1/en not_active Abandoned
- 2001-04-20 CN CN01808071.5A patent/CN1423854A/zh active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07254738A (ja) * | 1994-03-14 | 1995-10-03 | Kawasaki Heavy Ind Ltd | ヨウ素レーザーおよび装置 |
JPH11103107A (ja) * | 1997-09-26 | 1999-04-13 | Kawasaki Heavy Ind Ltd | ヨウ素レーザ発生装置 |
JPH11298069A (ja) * | 1998-04-09 | 1999-10-29 | Kawasaki Heavy Ind Ltd | ヨウ素レーザにおけるヨウ素混合ノズル |
JP2000012945A (ja) * | 1998-06-26 | 2000-01-14 | Kawasaki Heavy Ind Ltd | 励起酸素ヨウ素レーザ発生方法および装置 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105281183A (zh) * | 2014-07-16 | 2016-01-27 | 中国科学院大连化学物理研究所 | 一种实现高工作压力碘激光增益介质的结构及方法 |
Also Published As
Publication number | Publication date |
---|---|
US20030161372A1 (en) | 2003-08-28 |
EP1283568A1 (en) | 2003-02-12 |
AU2001248813A1 (en) | 2001-11-07 |
CN1423854A (zh) | 2003-06-11 |
JP3340417B2 (ja) | 2002-11-05 |
RU2002131258A (ru) | 2004-05-10 |
JP2001308424A (ja) | 2001-11-02 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
KR100291152B1 (ko) | 플라즈마발생장치 | |
KR0145302B1 (ko) | 얇은 막의 형성방법 | |
KR101568944B1 (ko) | 플라즈마 발생 장치 및 cvd 장치 | |
KR20050094477A (ko) | 플라즈마 처리 방법, 반도체 기판 및 플라즈마 처리 장치 | |
TW200419649A (en) | Plasma processing apparatus and plasma processing method | |
JP2006320820A (ja) | プラズマ式ガス除害装置 | |
JP2009004157A (ja) | プラズマ発生装置 | |
KR100954486B1 (ko) | 전자파 플라즈마토치에서 발생한 활성입자의 화학반응 장치 | |
WO2001082425A1 (fr) | Generateur d'oxygene excite par une decharge haute frequence pour laser a iode et procede de generation d'oxygene correspondant | |
JP3768854B2 (ja) | プラズマジェット発生装置 | |
JPH0986904A (ja) | オゾン発生方法およびオゾン発生装置 | |
JP2003049276A (ja) | 放電プラズマ処理装置及びそれを用いた処理方法 | |
JP3006760B2 (ja) | ヨウ素レーザ発生装置 | |
JPS62216638A (ja) | 表面処理装置 | |
KR100945316B1 (ko) | 광원 장치, 기판 처리 장치, 기판 처리 방법 | |
Schmiedberger et al. | Novel concept of electric discharge oxygen-iodine laser | |
JPH07335563A (ja) | プラズマcvd装置 | |
JP2004031509A (ja) | マイクロ波を用いた大気圧プラズマ処理方法及び装置 | |
RU2088056C1 (ru) | Генератор атомарного водорода | |
US6690707B1 (en) | Plasma assisted oxygen-iodine laser | |
JP2005116362A (ja) | マイクロ波励起のプラズマ処理装置およびプラズマ処理方法 | |
JPH09186377A (ja) | ヨウ素レーザ発生方法および装置 | |
JPH07254738A (ja) | ヨウ素レーザーおよび装置 | |
WO1998040533A1 (fr) | Dispositif et procede de traitement de surface | |
JPH03283478A (ja) | 紫外線パルスレーザー装置 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AU CA CN CZ IL IN KR NO PL RU SG US |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE TR |
|
DFPE | Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101) | ||
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWE | Wipo information: entry into national phase |
Ref document number: IN/PCT/2002/01380/MU Country of ref document: IN |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2001921970 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 018080715 Country of ref document: CN |
|
WWE | Wipo information: entry into national phase |
Ref document number: 10258132 Country of ref document: US |
|
ENP | Entry into the national phase |
Ref document number: 2002 2002131258 Country of ref document: RU Kind code of ref document: A |
|
WWP | Wipo information: published in national office |
Ref document number: 2001921970 Country of ref document: EP |
|
WWW | Wipo information: withdrawn in national office |
Ref document number: 2001921970 Country of ref document: EP |