Influence of Mercury on the Characteristics of Hot Cathode Lamps and Cold Cathode Lamps

Autor:	Yuuji Takeda, Tadao Uetsuki, Takuma Ohira, Osamu Fukumasa
Rok vydání:	2008
Předmět:	Gas-discharge lamp Materials science business.industry Schottky effect Analytical chemistry chemistry.chemical_element Hot cathode Cathode law.invention Mercury (element) chemistry law Electrode Optoelectronics Cold cathode Electrical and Electronic Engineering business Fluorescent lamp
Zdroj:	JOURNAL OF THE ILLUMINATING ENGINEERING INSTITUTE OF JAPAN. 92:775-782
ISSN:	2185-1506 0019-2341
Popis:	Discharge lamps that have electrodes are classified into two categories, hot cathode lamps (HCLs) and cold cathode lamps (CCLs). We investigated the relationship between the presence of Hg, the kinds of rare gases present, and the cathode fall voltage (CFV) of both CCLs and HCLs. The results show mainly two points. One is the difference in the CFV characteristics, that is, CCLs’ CFV is positive, while HCLs’ is negative. This is because the emission mechanism of CCLs, due to the gamma effect, differs from that of HCLs due to the Schottky effect. The other main point is the influence of Hg on the CFV. The CFV of CCLs increases when Hg is present because of the difference between γ-coefficients for Ne+ and Hg2+ due to the energy potentials. The CFV of HCL also increases when Hg is present because of the difference between the cathode temperatures in an Ar discharge and an Ar-Hg discharge.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::6c72ccaed1f8da524cdeac04fa2dc81b https://doi.org/10.2150/jieij.92.775 Zobrazit plný text záznamu