CN109378682B - Device for generating new substance by using laser to bombard target material - Google Patents
Device for generating new substance by using laser to bombard target material Download PDFInfo
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- CN109378682B CN109378682B CN201811372958.8A CN201811372958A CN109378682B CN 109378682 B CN109378682 B CN 109378682B CN 201811372958 A CN201811372958 A CN 201811372958A CN 109378682 B CN109378682 B CN 109378682B
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- 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
- H01S3/0007—Applications not otherwise provided for
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B19/00—Machines, plants or systems, using evaporation of a refrigerant but without recovery of the vapour
- F25B19/02—Machines, plants or systems, using evaporation of a refrigerant but without recovery of the vapour using fluid jet, e.g. of steam
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- Optics & Photonics (AREA)
- Mechanical Engineering (AREA)
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- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
A device for bombarding a target with laser to generate a new substance belongs to the technical field of laser application and comprises a laser focusing mirror, a target chamber, an ultrasonic velocity spray pipe and a substance detection chamber. One end of the target material chamber is provided with a quartz window, and an air inlet pipeline is arranged at the position of the quartz window. A placing platform is arranged in the target material chamber, and a target material is arranged on the placing platform. A sampling pipeline is arranged near the position close to the outlet of the supersonic velocity spray pipe in the material detection chamber, and an air exhaust pipeline and a pressure gauge are arranged at the other end of the material detection chamber. When the device works, the vacuum pump is started firstly, the buffer gas is introduced into the target material chamber through the gas inlet pipeline, and the pressure gauge is used for monitoring the gas pressure of the material detection chamber. Then, the laser is started, the target material is bombarded through the laser focusing mirror, and the substances generated by bombardment flow to the substance detection chamber along with the buffer gas through the supersonic speed spray pipe. Finally, the generated substance enters a substance testing instrument through a sampling pipeline, and the property of the generated substance is measured. The invention has the advantages of compact structure, simple device, convenient use and the like.
Description
Technical Field
The invention belongs to the technical field of laser application, and particularly relates to a device for generating a new substance by bombarding a target material with laser.
Background
Since the birth of the laser, the interaction between the laser and the substance becomes a durable hot research field, and the research of new materials and new substances is one of the basic research fields which have great influence on the progress of engineering technology. The generation of new materials or substances can be realized by various technologies, the target is bombarded by high-energy laser to generate new substances, and the method has the advantages of flexible use, simple process, strong repeatability, good mass production capacity and the like, and is one of the technological approaches with great prospect. For example, in the field of catalytic chemistry, high-energy laser is used for bombarding certain targets, so that certain macromolecular substances with large specific surface areas can be generated, and the high-energy laser has particularly good catalytic performance and can be used for efficiently producing certain industrial products.
The high-energy laser action and the target material can generate a large amount of heat, so that the temperature of the target material and generated substances is rapidly increased. If the environmental gas is chemically reactive, such as in the presence of oxygen, the generated substances will react chemically with the environmental gas. In order to avoid chemical reactions, it is common practice to use inert gases as protective gases. Furthermore, the temperature of the material produced by laser bombardment of the target material is generally high, and it is usually necessary to cool it first before measuring its properties. At present, the generated substances are cooled by adopting a heat conduction-based method, the cooling time is longer, and the cooling effect is poorer.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a device for generating new substances by using laser to bombard a target material.
The technical scheme adopted by the invention is as follows:
a device for bombarding a target material by using laser to generate a new substance comprises a laser focusing mirror, a target material chamber, a supersonic velocity spray pipe and a substance detection chamber. A quartz window is arranged at one end of the target material chamber, a laser focusing mirror is arranged below the quartz window, and an air inlet pipeline is arranged near the quartz window; the other end of the target material chamber is communicated with the substance detection chamber through the supersonic velocity spray pipe. The target chamber is internally provided with a placing platform, and the placing platform is provided with a target. A sampling pipeline is arranged near the position, close to the outlet of the supersonic velocity spray pipe, of one end in the substance detection chamber, and the sampling pipeline is connected with a substance testing instrument; and the other end of the substance detection chamber is provided with an air exhaust pipeline and a pressure gauge, and the air exhaust pipeline is connected with a vacuum pump.
When the device works, the vacuum pump is started firstly, buffer gas is introduced into the target material chamber through the gas inlet pipeline, and the pressure gauge is used for monitoring the gas pressure of the material detection chamber. Then, the laser is started, the target material is bombarded through the laser focusing mirror, and the substances generated by bombardment flow to the substance detection chamber along with the buffer gas through the supersonic speed spray pipe. Finally, the generated substance enters a substance testing instrument through a sampling pipeline, and the property of the generated substance is measured.
Furthermore, the device for generating the new substance by using the laser to bombard the target material is designed to ensure that the protective gas inlet is arranged relative to the quartz window, so that the quartz window can be protected from being polluted by the generated substance by the protective gas.
Furthermore, the device for generating the new substance by using the laser to bombard the target is designed with the supersonic velocity spray pipe, so that the buffer gas carrying the generated substance realizes a plurality of Mach number flow velocities, thereby reducing the temperature of the generated substance. The supersonic velocity spray pipe 10 adopts a Laval spray pipe structure.
Furthermore, the device for generating the new substance by using the laser to bombard the target can use a plurality of substance detecting instruments to measure the generated substance.
Furthermore, in the device for generating the new substance by using the laser to bombard the target, the buffer gas is inert gas with inactive chemical property, and the generated substance reacts with gas with active chemical property such as ambient oxygen under the high-temperature condition.
The device adopts the inert gas to protect the generated substances, and simultaneously uses the supersonic speed spray pipe technology to rapidly cool the generated substances, and has the advantages of compact structure, simple device, convenient use and the like.
Drawings
Fig. 1 is a schematic structural diagram of an apparatus for generating new substances by bombarding a target with laser according to an embodiment of the present invention.
In fig. 1: 1, laser; 2, a laser focusing mirror; 3, a quartz window; 4 an air inlet pipeline; 5, a target material chamber; 6, placing a platform; 7 sampling pipeline; 8 a substance testing instrument; 9, target material; 10 supersonic velocity spray pipes; 11 pressure gauge; 12-a substance detection chamber; 13 an air extraction pipeline; 14 vacuum pump.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The invention provides a device for generating new substances by bombarding a target material with laser. Fig. 1 shows a structure of an apparatus for generating a new substance by bombarding a target with laser light according to an embodiment of the present invention, and for convenience of illustration, only the parts related to the embodiment of the present invention are shown, which are detailed as follows:
a device for bombarding a target material by using laser to generate a new substance comprises a laser focusing mirror 2 with the focal length of 1000mm, a target material chamber 5, an ultrasonic velocity spray pipe 10 and a substance detection chamber 12. One end of the target material chamber 5 is provided with a quartz window 3, an air inlet pipeline 4 is arranged near the quartz window 3, and the side surface of the quartz window 3 is provided with a laser focusing mirror 2. A placing platform 6 is arranged in the chamber of the target 5, a target 9 is arranged on the placing platform, and the target 9 is carbon. A sampling pipeline 7 is arranged in the material detection chamber 12 near the outlet of the supersonic nozzle 10, and the sampling pipeline 7 is connected with a material testing instrument 8. An air exhaust pipeline 13 and a pressure gauge 11 are arranged at the other end of the substance detection chamber 12, and the air exhaust pipeline 13 is connected with a vacuum pump 14. In the embodiment, the supersonic nozzle 10 adopts a Laval nozzle structure.
He gas is used as buffer gas, when in work, the vacuum pump 14 is firstly started, the buffer gas is introduced into the target material chamber 5 through the gas inlet pipeline 4, and the pressure gauge 11 is used for monitoring the gas pressure of the material detection chamber 12. The parameters of the air inlet pipeline 4 and the vacuum pump 14 are adjusted, so that the buffer gas in the supersonic velocity spray pipe can flow for more than 2 Mach numbers, the temperature is reduced to about 180K, and the purpose of rapidly cooling the generated substances is realized.
During operation, a 10kW oxygen-iodine laser (COIL) is adopted to bombard a carbon target through a laser focusing mirror 2, a generated substance is rapidly cooled to about 180K through a supersonic velocity spray pipe 10, the substance entering a substance detection chamber 12 enters a substance testing instrument 8 through a sampling pipeline 7, in the embodiment, the substance testing instrument 8 adopts a time-of-flight mass spectrometer to measure the charge-to-mass ratio of the substance, and the generated substance is determined to be C60.
It will be understood by those skilled in the art that the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the invention, and that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (1)
1. A device for bombarding a target material by using laser to generate a new substance is characterized by comprising a laser focusing mirror, a target material chamber, an ultrasonic velocity spray pipe and a substance detection chamber;
a quartz window is arranged at one end of the target material chamber, a laser focusing lens is arranged below the quartz window, and an air inlet pipeline is arranged near the quartz window; the gas inlet pipeline is used for introducing an inert gas channel into the target material chamber, the inert gas is used as buffer gas for carrying generated substances to flow to the substance detection chamber through the supersonic velocity spray pipe, and is also used as protective gas for protecting the quartz window from being polluted by the generated substances and preventing the generated substances from generating chemical reaction with environmental gas; the other end of the target material chamber is communicated with the substance detection chamber through a supersonic velocity spray pipe, and the supersonic velocity spray pipe is used for enabling buffer gas carrying generated substances to realize a plurality of Mach number flow velocities and reducing the temperature of the generated substances; a placing platform is arranged in the target chamber at a position close to the supersonic velocity spray pipe, and a target is arranged on the placing platform; a sampling pipeline is arranged in the substance detection chamber close to the outlet of the supersonic velocity spray pipe and is connected with a substance testing instrument; the other end of the substance detection chamber is provided with an air exhaust pipeline and a pressure gauge, and the air exhaust pipeline is connected with a vacuum pump; the supersonic velocity spray pipe adopts a Laval spray pipe structure;
when the device works, firstly, the vacuum pump is started, inert gas is introduced into the target material chamber through the gas inlet pipeline, and the pressure gauge is used for monitoring the gas pressure of the material detection chamber; then, starting laser, bombarding the target material through a laser focusing mirror, wherein substances generated by bombardment flow to a substance detection chamber through an ultrasonic velocity spray pipe along with buffer gas; finally, the produced substance enters a substance testing instrument through a sampling pipeline, and the property of the produced substance is measured.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811372958.8A CN109378682B (en) | 2018-11-19 | 2018-11-19 | Device for generating new substance by using laser to bombard target material |
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| CN201811372958.8A CN109378682B (en) | 2018-11-19 | 2018-11-19 | Device for generating new substance by using laser to bombard target material |
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| CN109378682A CN109378682A (en) | 2019-02-22 |
| CN109378682B true CN109378682B (en) | 2021-08-27 |
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| CN112448253A (en) * | 2019-08-30 | 2021-03-05 | 中国科学院大连化学物理研究所 | Solid laser gain module cooled by supersonic low-temperature gas and laser |
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| CN1532144A (en) * | 2003-03-26 | 2004-09-29 | ������������ʽ���� | Method for preparing nano carbon material |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US6797336B2 (en) * | 2001-03-22 | 2004-09-28 | Ambp Tech Corporation | Multi-component substances and processes for preparation thereof |
| US7790243B2 (en) * | 2006-07-19 | 2010-09-07 | The Aerospace Corporation | Method for producing large-diameter 3D carbon nano-onion structures at room temperature |
| CN106544636B (en) * | 2016-11-14 | 2018-10-02 | 南开大学 | The method for preparing thallium system high-temperature superconducting film without roasting target |
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Patent Citations (8)
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| US5788738A (en) * | 1996-09-03 | 1998-08-04 | Nanomaterials Research Corporation | Method of producing nanoscale powders by quenching of vapors |
| US6855659B1 (en) * | 1999-09-22 | 2005-02-15 | Nec Corporation | Manufacturing method of carbon nanotubes and laser irradiation target for the manufacture thereof |
| US6884404B2 (en) * | 2000-05-31 | 2005-04-26 | Fuji Xerox Co., Ltd. | Method of manufacturing carbon nanotubes and/or fullerenes, and manufacturing apparatus for the same |
| CN101262939A (en) * | 2002-12-17 | 2008-09-10 | 纳幕尔杜邦公司 | Method of producing nanoparticles using evaporation-condensation process with a reaction chamber plasma reactor system |
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