CN88201090U - High capability void cathode lamp - Google Patents
High capability void cathode lamp Download PDFInfo
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- CN88201090U CN88201090U CN 88201090 CN88201090U CN88201090U CN 88201090 U CN88201090 U CN 88201090U CN 88201090 CN88201090 CN 88201090 CN 88201090 U CN88201090 U CN 88201090U CN 88201090 U CN88201090 U CN 88201090U
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Abstract
The utility model relates to a high-performance hollow cathode lamp, composed of a lamp shell, a bottom seat, a plane lamp window, a main cathode, a public anode and an auxiliary cathode. The main cathode and the public anode are shielded by a shielding device. The upper part and the lower part of the shielding device are respectively provided with a mica sheet with holes. The inner part of the conducting wire lamp of the main cathode and the auxiliary cathode is shielded by a shielding tube. The high-performance hollow cathode lamp has the advantages of simple structure, is matched with an auxiliary feeding power supply, and can be directly used for current instruments without altering the structure of the current instrument. The auxiliary cathode is singly fed, which avoids the mutual influence of the main cathode and the auxiliary cathode; the current of the main cathode and the auxiliary cathode is respectively regulated to make the performance of the lamp be in the optimum state.
Description
The utility model relates to a kind of high-performance hollow cathode discharge light supply apparatus that atomic absorption spectroscopy and atomic fluorescence spectrometry are used.
At present, the light source of using as atomic absorption spectroscopy mainly is the common hollow cathode lamp of enclosed type.This lamp is a basic structure with an anode and a hollow cathode, as american documentation literature US3, and 264,511 and Russian Patent document SU803,407.In hard glass that seals or quartz glass lamp housing, enclose hollow cylinder hollow cathode and an anode of one one end opening, it is the 2-5 millimeter that the moon has internal diameter, its center line and lamp central lines are filled with the inert gas that pressure is the 300-2000 handkerchief, for example neon or argon gas in the lamp.One position of rectifying hollow cathode of lamp is an optical windshield or quartz window, can see through respective element atomic resonance beta radiation.The all or part of element by atomic resonance line to be launched of hollow cathode constitutes.The result who discharges between the anode of this type lamp and the negative electrode because the cathodic sputtering effect produces atomic vapour, also provides the excitation energy that produces atom spectrum simultaneously, makes at least that part of atoms is excited in the steam.The advantage of this type lamp is that it is simple in structure, easy to use, can directly uses on various Atomic Absorption Spectrometers.The major defect of this type lamp is that these two kinds of effects that discharge process produces can not separately be controlled.Change discharge parameter, will exert an influence to above-mentioned two kinds of effects simultaneously as discharging current.If do not wish to cause that because of self-priming and resonance broaden breadth of spectrum line increases, just must restriction produce the amount of atomic vapour to quite little degree.Therefore limit the size of adaptable discharging current, also limited the excitation energy that can be added on the atomic vapour simultaneously.Consequently, if wish to obtain sharp-pointed spectral line, the output intensity of this type lamp just is restricted.
American documentation literature US3,433,963, and US3,517,188 had once described Sullivan-Walsh type high strength hollow cathode discharge lamp.Z.Van Gelder (Appl.Spectrosc.(22), 581,1968) above high-intensity lamp is improved, made Gelder type high strength hollow cathode discharge lamp.
American documentation literature US4,158,790 have described the high strength hollow cathode lamp of replaceable negative electrode.
The design feature of above-mentioned several high strength hollow cathode discharge lamps is all to have increased the heated filament negative electrode that has easy emitting electrons oxide coating, so that the low-voltage, high-current discharging current to be provided.Therefore, the major advantage of above-mentioned several high strength hollow cathode discharge lamps is luminous intensity height of output, usually than the strong 4-17 of common hollow cathode lamp times (Sullivan-Walsh type).Its shortcoming is a complex structure, the heating power supply of bigger accessory power supply that is added to auxiliary cathode of power consumption and heated filament negative electrode also to be set except that main power source in addition, make, use and use the Atomic Absorption Spectrometer of this lamp or the design of atomic fluorescence spectrometer to bring very big inconvenience to it.
R.M.Lowe(Spectrochimica Acta, 26B, 201-205,1971) Lowe type high strength hollow cathode discharge lamp proposed.The advantage of this high strength hollow cathode lamp just is on the structure simpler relatively than above-mentioned all high strength hollow cathode lamps, the light intensity height of output, usually doubly than the strong 10-100 of common hollow cathode lamp, but, owing to still have a hot cathode that has easy emitting electrons oxide coating as auxiliary cathode, so still need to be provided with three kinds of power supplies, the heated filament negative electrode needs 6 volts, 4 amperes AC power, auxiliary cathode needs 130 volts, the DC power supply of 0-150 milliampere, about 45 watts of both power consumptions, same giving made, use and use the Atomic Absorption Spectrometer of this lamp or the design of atomic fluorescence spectrometer to bring very big inconvenience.And the loss of lamp itself is fast, the life-span short.
Among the China utility application CN87201859 a kind of high performance hollow cathode lamp has been described, this high performance hollow cathode lamp, a lamp housing is arranged, end at lamp housing is a base, the other end with respect to base on lamp housing is equipped with plane lamp window, in lamp housing, be equipped with one and be suitable for producing the hollow cathode of pantogen sub-resonance line to be launched as main cathode, a public anode and an auxiliary cathode, hollow cathode as main cathode is the hollow cylinder of a both ends open, charge into inert gas in the lamp housing, said hollow cathode as auxiliary cathode is a hollow cylinder, hollow cathode and public anode as main cathode are shielded by the shielding device of an opening at the main cathode end together, and the opening of shielding device is facing to plane lamp window.
Owing to do not adopt the heated filament negative electrode as auxiliary cathode, but with the hollow cylinder hollow cathode of one one end opening as auxiliary cathode, so do not need to be provided with the heating power supply of heated filament negative electrode and the accessory power supply of low-voltage, high-current.The public power supply of main cathode and auxiliary cathode, direct in the inside or the outside of sealing lamp housing with the lead connection or by regulating the exit of resistance with two negative electrodes of lead connection.Like this, this high performance hollow cathode lamp is the same with common hollow cathode lamp two effective lamp bases (1 pin negative pole, 3 pin positive poles), can directly be inserted on commodity Atomic Absorption Spectrometer or the atomic fluorescence spectrometer and use.This high performance hollow cathode lamp has simple in structure, and is easy to use, output intensity height, characteristics such as self-absorption effect is little.But when this lamp used under different supply currents, needed adjusting resistance had bigger difference during with use on different instruments.The aging disturbances of power that causes of hollow cathode in use has bigger influence to the performance of lamp, and main cathode and either party discharge shakiness of auxiliary cathode will influence each other and cause bigger light output noise.
This novel purpose just is the described high performance hollow cathode lamp of Chinese utility model patent CN87201859 is improved, make it adjusting resistance need be set in lamp, be convenient to manufacturing of lamp, increase the flexibility of using lamp, possess again easy to use, characteristic of simple structure.
This another novel purpose is this novel this new high performance hollow cathode lamp, (this auxiliary electric power supply device is this novel same inventor's invention when a kind of auxiliary electric power supply device, and serve as the utility model patent that topic is applied for same applicant on the same day with the application with " high performance hollow cathode lamp auxiliary electric power supply ") when being used with original power supply of Atomic Absorption Spectrometer or atomic fluorescence spectrometer, can be directly used on the existing Atomic Absorption Spectrometer or on the existing atomic fluorescence spectrometer, its auxiliary cathode is powered separately, because main power source and auxiliary electric power supply can be controlled respectively, not only kept the advantage of the described high performance hollow cathode lamp of CN87201859 but also overcome the shortcoming that adds resistance in the CN87201859 lamp, make the analytical performance of the new high performance hollow cathode lamp that this is novel significantly improve, make it be in optimum state.
This another novel purpose provides a kind of light source that can launch high spectral quality that is used for atomic absorption spectroscopy or atomic fluorescence spectrometry, makes the spectral line of this light emitted reduce self-priming significantly and broaden, and the ion spectra spectral line also significantly reduces.
This is novel to be a kind of high performance hollow cathode lamp, a lamp housing is arranged, end at lamp housing is a base, the other end with respect to base on lamp housing is equipped with plane lamp window, in lamp housing, be equipped with one and be suitable for producing the hollow cathode of pantogen sub-resonance line to be launched as main cathode, a public anode and an auxiliary cathode, hollow cathode as main cathode is the hollow cylinder of a both ends open, charge into inert gas in the lamp housing, said hollow cathode as auxiliary cathode is a hollow cylinder, hollow cathode and public anode as main cathode are shielded by the shielding device of an opening at the main cathode end together, the opening of shielding device is facing to plane lamp window, the other end of shielding device has a hole, draw the lead of public anode by this hole, for fear of the undesired discharge between auxiliary cathode and the public anode, in the upper and lower of shielding device a mica sheet that is used to shield with holes is arranged respectively, part is shielded by shielded-plate tube respectively in the lamp of the lead of main cathode and the lead of auxiliary cathode.
For main cathode and public anode are well shielded, the shielding device of main cathode and public anode is shielded-plate tube preferably, and shielded-plate tube can be made with any material in the materials such as glass, pottery, quartz.
The shielded-plate tube of the lead of main cathode, the lead of auxiliary cathode, also be to make by glass, pottery, quartzy a kind of material wherein, the upper end of the shielded-plate tube of the lead of main cathode, the lead of auxiliary cathode abuts against on the mica sheet on shielding device top of main cathode, public anode, and its lower end abuts against on the base of lamp.The shielded-plate tube of main cathode and auxiliary cathode can be an integral tube, can also be a compound tube, and the top of compound tube is a tubule, and its underpart is an extra heavy pipe, and the tubule on top is inserted in the extra heavy pipe of bottom just.
Said public anode can be top on the plectane that connects of a lead or the rod around the end that last titanium silk or a lead connect up disk or the end disk down that connects of a lead, public anode can also be a tungsten bar.Plectane, disk are generally made by metallic nickel, titanium, tantalum a kind of material wherein, are generally made by metallic nickel, tungsten a kind of material wherein around the rod of last titanium silk as the top of the rod of public anode.
Separate for the process and the excitation process that cathodic sputtering are produced atom vapor, will be designed to the hollow cylinder of both ends open as the hollow cathode of main cathode; To be designed to the hollow cylinder of one or both ends opening as the hollow cathode of auxiliary cathode, also can be to be positioned at wherein a kind of of the main cathode top hollow cylinder cylinder identical with the main cathode axis, stairstepping cylinder cylinder, open circles plate-like cylinder.Discharge between main cathode and the public anode sputters the atom vapor that constitutes the main cathode material element, and this element atom vapor portion is excited.As the hollow cathode of auxiliary cathode and the discharge between the public anode, further excite the atom vapor that has sputtered out, and the luminous intensity of output is significantly increased, and self-priming, broaden and ion line reduces on the contrary.
Because this novel heated filament negative electrode that do not adopt is as auxiliary cathode, but maybe will be positioned at the main cathode top hollow cylinder cylinder identical, stairstepping cylinder cylinder, open circles plate-like cylinder a kind of hollow cathode wherein as auxiliary cathode as auxiliary cathode or friendship with the main cathode axis with the hollow cylinder hollow cathode of an one or both ends opening, therefore do not need to be provided with the heating power supply of heated filament negative electrode, main cathode and auxiliary cathode are controlled by two power supplys respectively.
This novel high performance hollow cathode lamp has three effective lamp bases (1 pin negative pole, 3 pin positive poles, 5 pin are auxiliary cathode), can directly on commercialization Atomic Absorption Spectrometer or atomic fluorescence spectrometer, use with auxiliary electric power supply device (this novel same inventor's invention, and serve as to inscribe to apply for utility model patent on the same day with same applicant with " high-performance solid cathode lamp auxiliary electric power supply ") use with the applicant.
Has above design feature owing to this is novel, can regulate the optimal discharge parameter by control main cathode and auxiliary cathode power supply device respectively, the cathodic sputtering effect is reduced relatively, priming effect significantly increases, making stimulated luminescence is to carry out under the condition of low atomic density and high electronics and ion concentration, and this has just guaranteed that this novel said light source can be launched and has reduced self-priming significantly, broadens and the atomic spectra line of the high spectral quality of ion line.
The advantage of this new high performance hollow cathode lamp that this is novel just is:
One, this novel new high performance hollow cathode lamp is except the original advantage of high performance hollow cathode lamp described in having Chinese utility application CN87201859, avoided its shortcoming again, removed the resistance that is provided with in the lamp, be convenient to the making of lamp, make the simple in structure of lamp, easy to use, increased the flexibility of using lamp.
Two, because this novel new high performance hollow cathode lamp and auxiliary electric power supply is used, auxiliary cathode is powered separately, in use, avoided unstable the influencing each other of causing of main cathode and auxiliary cathode discharge; Because this novel new hollow cathode lamp can be regulated the electric current of its main cathode and auxiliary cathode respectively, make the performance of lamp be in optimum state, when auxiliary cathode is separately powered as shown in Figure 1, when different main cathode electric current, ratio K=the i of auxiliary cathode and main cathode electric current is auxilliary/and i master is different, as the main cathode electric current is 3 MAH K=0.6,5 MAH K=1.1,7 MAH K=1.4.Therefore the resistance mode that adds of the high performance hollow cathode lamp of describing in CN87201859 is powered, just can not find best operating point, and the new high performance hollow cathode lamp that this novel main cathode and auxiliary cathode are separately powered can be selected best power supply parameter.
Three, this novel new high performance hollow cathode lamp and auxiliary electric power supply device can be directly used on the existing commercial Atomic Absorption Spectrometer or atomic fluorescence spectrometer, and does not change the design of existing above-mentioned instrument,
The relative intensity of the output light of the plumbous lamp of Fig. 1 and the relation of auxiliary cathode supply current
Ordinate is the relative intensity I of the output light of plumbous lamp among Fig. 1, and abscissa is the auxiliary cathode supply current, unit milliampere (average current), and 1 is 3 milliamperes in main cathode electric current, and 2 is 5 milliamperes in main cathode electric current, and 3 is 7 milliamperes in main cathode electric current.
The profile of Fig. 2 high performance hollow cathode lamp
This novel high performance hollow cathode lamp illustrates preferred forms with a kind of non-limiting examples, will help the understanding of and advantage novel to this.The profile of the most preferred embodiment of the high performance hollow cathode lamp that this is novel is seen Fig. 2.
This novel high performance hollow cathode lamp comprises a lamp housing (1), is made by appropriate materials, and as hard glass, quartz glass, metal etc., lamp housing can be tubular or doleiform; Quartz transition glass sealing part (2); Silica glass member (3); Plane lamp window (4), the manufacturing materials of plane lamp window is quartz glass or hard glass, makes its atomic spectra line that sees through this lamp emission effectively, as is long wavelength's atomic spectra line, can use the hard glass plane lamp window, this moment just can be without quartz transition sealing part (2).Also comprise the tube sealing of bleeding (14), base (17).Being positioned in lamp housing inside has a shielded-plate tube (5) on the lamp central axis, this shielded-plate tube is made by appropriate materials, for example hard glass, ceramic material, quartz etc.The opening of this shielded-plate tube one end is towards plane lamp window (4), and the other end of shielded-plate tube has a circular hole, draws lead (6) by this circular hole, and lead (6) is wherein a kind of of tungsten bar, molybdenum bar.Interior sealing-in one conductive circular plate of shielded-plate tube (5) (18) is generally nickel, and conductive circular plate links to each other with lead (6), and draws lamp housing as public anode with the lead (6) of public anode.The hollow cylinder hollow cathode (7) of the both ends open of one internal diameter 3-5 millimeter is arranged at the top of shielded-plate tube, it is all made with the element of pantogen sub-resonance line to be launched with part, link to each other with the lead tungsten metal bar (9) of drawing the main cathode outside the lamp housing through wires (8) such as titanium silk or nickel wires, be main cathode in the side.The part of lead (9) in lamp of drawing the outer main cathode of lamp housing shielded by combination shielded-plate tube (13), and combination shielded-plate tube (13) is a porcelain tube.Side at shielded-plate tube (5) is provided with auxiliary hollow cathode (10), auxiliary hollow cathode (10) can be the hollow cylinder of an end opening of internal diameter 2-5 millimeter, this auxiliary cathode is made by appropriate materials, general with nickel, titanium etc., be supported on the lead tungsten bar (11) of the auxiliary cathode of drawing lamp housing.Lead tungsten bar (11) part in lamp of drawing the auxiliary cathode of lamp housing is shielded by combination shielded-plate tube (20).Combination shielded-plate tube (20) is a porcelain tube.This novel new high performance hollow cathode lamp goes between (19) by main cathode lead-in wire (15) and auxiliary cathode lead-in wire (16), public anode, by the power supply and the power supply of auxiliary electric power supply device of existing commercial Atomic Absorption Spectrometer or atomic fluorescence spectrometer.(12), (21) are for having the mica sheet of a circular hole.After vacuumizing, in lamp housing, fills by the tube sealing of bleeding (14) inert gas with the 300-2000 handkerchief, as argon or neon, and the tube sealing (14) of will bleeding then sealing.Identical with common hollow cathode lamp, this novel said high performance hollow cathode lamp is applicable to manufacturing of about 70 kinds of metallic elements and semimetallic elements high performance hollow cathode lamp.A kind of element needs a kind of lamp.It is different and different that main cathode and the discharge voltage of public anode are looked element, is generally the 300-400 volt, and discharging current is adjustable from the 0-40 milliampere.
Claims (5)
1, a kind of high performance hollow cathode lamp, a lamp housing is arranged, end at lamp housing is a base, the other end with respect to base on lamp housing is equipped with plane lamp window, in lamp housing, be equipped with one and be suitable for producing the hollow cathode of pantogen sub-resonance line to be launched as main cathode, a public anode and an auxiliary cathode, hollow cathode as main cathode is the hollow cylinder of a both ends open, and in lamp housing, charge into inert gas, hollow cathode as auxiliary cathode is a hollow cylinder, hollow cathode and public anode as main cathode are shielded by the shielding device of an opening at the main cathode end together, the opening of shielding device is facing to plane lamp window, this novel feature is, the other end of shielding device has a hole, draw the lead of public anode by this hole, in the upper and lower of shielding device a mica sheet that is used to shield with holes is arranged respectively, part is shielded by shielded-plate tube respectively in the lamp of the lead of main cathode and auxiliary cathode lead.
2,, it is characterized in that the shielded-plate tube of lead of lead, the auxiliary cathode of main cathode is made by glass, pottery, quartzy a kind of material wherein according to a kind of high performance hollow cathode lamp of claim 1.
3, according to a kind of high performance hollow cathode lamp of claim 1, it is characterized in that, public anode be top on the plectane that connects of a lead, the rod around the end that last titanium silk, a lead connect up wherein a kind of of disk, end disk down that a lead connects.
According to a kind of high performance hollow cathode lamp of claim 3, it is characterized in that 4, said plectane, disk are made by nickel, titanium, tantalum a kind of material wherein, is that nickel, tungsten a kind of metal is wherein made as the top on the rod of public anode around the rod of last titanium silk.
5, according to a kind of high performance hollow cathode lamp of claim 1, it is characterized in that auxiliary hollow cathode is the hollow cylinder of both ends open, also can be to be positioned at wherein a kind of of the main cathode top hollow cylinder cylinder identical with the main cathode axis, stairstepping cylinder cylinder, open circles plate-like cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88201090 CN88201090U (en) | 1988-02-05 | 1988-02-05 | High capability void cathode lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88201090 CN88201090U (en) | 1988-02-05 | 1988-02-05 | High capability void cathode lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN88201090U true CN88201090U (en) | 1988-08-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88201090 Expired - Lifetime CN88201090U (en) | 1988-02-05 | 1988-02-05 | High capability void cathode lamp |
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| Country | Link |
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| CN (1) | CN88201090U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100401454C (en) * | 2003-02-12 | 2008-07-09 | 浜松光子学株式会社 | Gas discharge tube |
| CN106783519A (en) * | 2016-12-06 | 2017-05-31 | 中国航空工业集团公司北京航空材料研究院 | A kind of excitation light source device |
-
1988
- 1988-02-05 CN CN 88201090 patent/CN88201090U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100401454C (en) * | 2003-02-12 | 2008-07-09 | 浜松光子学株式会社 | Gas discharge tube |
| CN106783519A (en) * | 2016-12-06 | 2017-05-31 | 中国航空工业集团公司北京航空材料研究院 | A kind of excitation light source device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C15 | Extension of patent right duration from 15 to 20 years for appl. with date before 31.12.1992 and still valid on 11.12.2001 (patent law change 1993) | ||
| RN01 | Renewal of patent term | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |