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Hollow cathode lamp test device and test method

A hollow cathode lamp and testing device technology, which is applied in the field of testing, can solve the problems of decreasing radiation intensity, unconcentrated glow, affecting the radiation intensity and stability of the hollow cathode lamp, etc., and achieves the effects of stable value and quick use.

Active Publication Date: 2017-06-16
SHANDONG NON METALLIC MATERIAL RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] According to JJG694-2009 atomic absorption spectrophotometer verification regulations, the verification of multiple parameters of the instrument is based on the hollow cathode lamp, such as the wavelength indication error and resolution of the verification instrument using mercury lamps and manganese lamps; the copper lamp verification instrument The stability of the static baseline, the use of cadmium lamps for the background of the instrument, the use of arsenic lamps and cesium lamps to test the edge energy of the instrument, but because there is no such device at present, the performance of the hollow cathode lamp is difficult to evaluate, and only qualified atomic absorption Spectrophotometer for detection of glow and stability of hollow cathode lamps
[0003] The performance of the hollow cathode lamp is mainly reflected in the starting time, radiation intensity and stability, etc. In the manufacturing process, the design of the electrode, the pressure of the enclosed gas and the final purification process directly affect the radiation intensity and stability of the hollow cathode lamp ;During use, due to cathode sputtering, the surface of the inner hole of the cathode is rough, and the cathode sputtering evaporator absorbs the carrier gas to reduce the pressure of the carrier gas in the lamp, resulting in a decrease in radiation intensity, poor stability, and non-concentrated glow. , can not even emit the resonance line of the measured element

Method used

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  • Hollow cathode lamp test device and test method
  • Hollow cathode lamp test device and test method

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Experimental program
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Effect test

Embodiment 1

[0052] Such as figure 1 Shown: The standard device of the atomic absorption spectrophotometer consists of a light source system, a monochromator system, a detector and a data processing system. The light source system consists of a 7SRA1100A turbine rotary table 1, a 300mm diameter tower wheel disc 2, and a nominal radiation power of 30w deuterium Lamp standard light source 3, 12V5w halogen tungsten lamp standard light source 4, deuterium lamp standard light source attenuator (T=70%, R=20mm) 14, halogen lamp standard light source attenuator (T=50%, R=20mm) 15, Hollow cathode lamp attenuator (T=10~50%, R=20mm) 16 constitutes; Monochromator system is made up of FHR1000 monochromator 7, monochromator focusing lens (f=80mm, R=20mm) 12; Detector The system consists of Horiba SYN-1024X256-SP CCD detector 8, S1133-14 silicon photocell detector 9, and silicon photocell focusing lens (f=20mm, R=10mm)13.

[0053] Deuterium lamp standard light source 3, halogen tungsten lamp standard li...

Embodiment 2

[0059] Such as figure 2 Shown: The standard device of the atomic absorption spectrophotometer consists of a light source system, a monochromator system, a detector and a data processing system. The light source system consists of a 7SRA1100A turbine rotary table 1, a 300mm diameter tower wheel disc 2, and a nominal radiation power of 30w deuterium Lamp standard light source 3, 12V5w halogen tungsten lamp standard light source 4, DL-4146-101S semiconductor laser 5, deuterium lamp standard light source attenuator (T=70%, R=20mm) 14, halogen tungsten lamp standard light source attenuator (T= 50%, R=20mm) 15, hollow cathode lamp attenuator (T=10~50%, R=20mm) 16; monochromator system consists of FHR1000 monochromator 7, monochromator focusing lens (f=80mm, R=20mm) 12; detector system consists of Horiba SYN-1024X256-SP CCD detector 8, S1133-14 silicon photocell detector 9, silicon photocell focusing lens (f=20mm, R=10mm) 13.

[0060] Deuterium lamp standard light source 3, halogen...

Embodiment 3

[0066] Such as image 3 Shown: The standard device of the atomic absorption spectrophotometer is composed of a light source system, a monochromator system, a detector and a data processing system. The light source system consists of a 7SRA1100A turbine rotary table 1, a 300mm diameter tower wheel disc 2, and a nominal radiation power of 30w deuterium Lamp standard light source 3, 12V5w halogen tungsten lamp standard light source 4, DL-4146-101S semiconductor laser 5, integrating sphere (60mm) 6, deuterium lamp focusing lens 10, halogen tungsten lamp focusing lens 11, deuterium lamp standard light source attenuator (T =70%, R=20mm) 14. Halogen lamp standard light source attenuator (T=50%, R=20mm) 15. Hollow cathode lamp attenuator (T=10~50%, R=20mm) 16; single The color system is composed of FHR1000 monochromator 7, monochromator focusing lens (f=80mm, R=20mm) 12; the detector system is composed of Horiba SYN-1024X256-SP CCD detector 8, S1133-14 silicon photocell detector 9 ,,...

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Abstract

The invention belongs the technical field of test. A deuterium lamp and a halogen tungsten lamp are adopted as standard light sources, and the starting time of a hollow cathode lamp is determined according to the response signal change of a silicon photocell through comparing the signal responses of the characteristic wavelength of the hollow cathode lamp and a background wavelength and determining the radiation intensity and the background noise of the hollow cathode lamp. A hollow cathode lamp test device involved in the invention is formed by a light source system, a monochromator system, detectors and a data processing system, a cone pulley disc (2) in the light source system is symmetrically provided with a deuterium lamp standard light source (3) and a halogen tungsten lamp standard light source (4), the coaxial space circumference is provided with n hollow cathode light sources, and is between 2 and 8; and silicon photocell detectors (9) are fixed at the opposite sides of the cone pulley disc and on the standard light source and hollow cathode lamp distributed space circumference. The device traces the magnitude of the standard hollow cathode lamp in an atomic absorption spectrophotometer to the standard light sources, has the advantages of stable magnitude and fastness and convenience in use, and is suitable for testing the starting time, the radiation intensity and the stability of the hollow cathode lamp, the background noise and other technologic parameters.

Description

technical field [0001] The invention belongs to the technical field of testing, relates to the testing technology of atomic absorption spectrophotometer measurement standards, and further relates to the testing technology of standard hollow cathode lamps for atomic absorption spectrophotometer verification. Background technique [0002] According to JJG694-2009 atomic absorption spectrophotometer verification regulations, the verification of multiple parameters of the instrument is based on the hollow cathode lamp, such as the wavelength indication error and resolution of the verification instrument using mercury lamps and manganese lamps; the copper lamp verification instrument The stability of the static baseline, the use of cadmium lamps for the background of the instrument, the use of arsenic lamps and cesium lamps to test the edge energy of the instrument, but because there is no such device at present, the performance of the hollow cathode lamp is difficult to evaluate,...

Claims

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Application Information

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IPC IPC(8): G01N21/31
CPCG01N21/3103G01N2021/3129
Inventor 潘忠泉赵华张彬杨欣欣周赛李本涛冀克俭拓锐胡国星
Owner SHANDONG NON METALLIC MATERIAL RES INST
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