Electric lamp and discharge devices – With gas or vapor – Having hollow cathode
Patent
1993-04-22
1996-01-09
O'Shea, Sandra L.
Electric lamp and discharge devices
With gas or vapor
Having hollow cathode
313621, 313632, 313605, 313306, 313619, H01J 6109
Patent
active
054831210
ABSTRACT:
A hollow cathode discharge tube is used for atomic absorption analysis. The tube has a cathode which includes a first hollow portion and a second hollow portion connected to each other. The second hollow portion has a diameter greater than the first hollow portion and a close end. Inserted through the closed end is a rod-like anode which has a part within the hollow space of the cathode. There is a auxiliary electrode which can be an auxiliary anode that surrounds the rod-like anode and is insulated therefrom. There is an additional electrode which can be an auxiliary cathode at the front end portion of the cathode. The cathode is formed of a material that is a material or includes a material that is to be analyzed.
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Abe Kazuya
Ishizaki Hiroshi
Kameya Takayuki
Okagaki Hiroshi
Esserman Matthew J.
Koto Electric Co., Ltd.
O'Shea Sandra L.
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