High-precision gas gain and energy transfer measurements in Ar-CO2 mixtures

被引:28
|
作者
Sahin, Ozkan [1 ]
Kowalski, Tadeusz Z. [2 ]
Veenhof, Rob [1 ,3 ]
机构
[1] Uludag Univ, Dept Phys, TR-16059 Bursa, Turkey
[2] AGH Univ Sci & Technol, Fac Phys & Appl Comp Sci, Krakow, Poland
[3] CERN, Collaborat RD51, CH-1211 Geneva 23, Switzerland
关键词
Gas detectors; Penning transfer; Excited states; Photon feedback; ELECTRON-DRIFT VELOCITY; ARGON; AMPLIFICATION; IONIZATION; DISCHARGE;
D O I
10.1016/j.nima.2014.09.061
中图分类号
TH7 [仪器、仪表];
学科分类号
0804 ; 080401 ; 081102 ;
摘要
Ar-CO2 is a Penning mixture since a fraction of the energy stored in Ar 3p(5)3d and higher excited states can be transferred to ionize CO2 molecules. In the present work, concentration and pressure dependence of Penning transfer rate and photon feedback parameter in Ar-CO2 mixtures have been investigated with recent systematic high-precision gas gain measurements which cover the range 1-50% CO2 at 400, 800, 1200, 1800 hPa and gas gain from 1 to 5 x 10(5). (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码:104 / 111
页数:8
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