MISC

2003年12月

Photon yields from nitrogen gas and dry air excited by electrons

ASTROPARTICLE PHYSICS
  • M Nagano
  • ,
  • K Kobayakawa
  • ,
  • N Sakaki
  • ,
  • K Ando

20
3
開始ページ
293
終了ページ
309
記述言語
英語
掲載種別
DOI
10.1016/S0927-6505(03)00192-0
出版者・発行元
ELSEVIER SCIENCE BV

In order to detect ultrahigh-energy cosmic rays (UHECR), atmospheric fluorescence light from the trajectory of the extensive air shower may be measured by mirror-photosensor systems. In this type of experiment the photon yield from electrons exciting air of various densities and temperatures is most fundamental information for estimating the primary energy of UHECR. An experiment has been undertaken using a Sr-90 beta source to study the pressure dependence of photon yields, and the life times of the excited states, for radiation in nitrogen and dry air. The photon yield between 300 and 406 nm in air excited by 0.85 MeV electrons is 3.73 +/- 0.15 (+/-14% systematic) photons per meter at 1000 hPa and 20 degreesC. The air density and temperature dependence is given for application to UHECR observations. (C) 2003 Elsevier B.V. All rights reserved.

リンク情報
DOI
https://doi.org/10.1016/S0927-6505(03)00192-0
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000186521500002&DestApp=WOS_CPL
ID情報
  • DOI : 10.1016/S0927-6505(03)00192-0
  • ISSN : 0927-6505
  • Web of Science ID : WOS:000186521500002

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