Prebreakdown gas tube detector of near UV radiation based on photoionization of excited states: time response to short N2laser pulses

Autor:	M. Cohen, N. S. Kopeika
Rok vydání:	1994
Předmět:	Materials science Argon business.industry Detector chemistry.chemical_element Response time Photoionization Laser law.invention Wavelength Optics chemistry law Excited state Secondary emission Electrical and Electronic Engineering Atomic physics business
Zdroj:	International Journal of Electronics. 77:117-126
ISSN:	1362-3060 0020-7217
DOI:	10.1080/00207219408926040
Popis:	A near ultra-violet gas-filled detector which is operated in the prebreakdown regime is described. 300 ps N2 laser pulses were used to study experimentally the detector speed of response at the 337 nm wavelength. Relative response times for different gases seem to be consistent with the photoionization of excited gas states, which is the basic mechanism of detection. Of the various rare gases, argon yielded the shortest response time. Both photoionization-assisted electron heating and secondary emission seem to play a significant role in reducing the time response. The reduced work function of the cathode material also appears to contribute to the reduced time response.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::eaaa38cd5ed642283a59aedab15b5a2d https://doi.org/10.1080/00207219408926040 Zobrazit plný text záznamu