Space-charge effects of positive ions on the development of pulses in parallel-plate avalanche counters

被引：0
|
作者：
Nakhostin, M. [1 ]
Baba, M. [1 ]
机构：
[1] Tohoku Univ, Cyclotron & Radioisotope Ctr, Sendai, Miyagi 9808578, Japan
来源：
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2015年 / 773卷
关键词：
Space-charge effect; Gas amplification; Parallel-plate avalanche counter; TRAGERVERMEHRUNG EINER LAWINE; BREAKDOWN; COEFFICIENT; SETUP;
D O I：
10.1016/j.nima.2014.11.005
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
The effects of the space-charge of positive ions on the development of alpha-particle induced pulses in a parallel-plate avalanche counter (PPAC) were studied by using pulse-shape analysis techniques. The analyses were separately carried out on the electron and the positive ion components of the pulses, reflecting the space-charge effects during and after the multiplication of charges in an external uniform electric field. Some calculations of the space-charge electric field and the first Townsend coefficient were carried out to explain the experimental waveforms. The dependence of the shape of the pulses to the amount of primary ionization is particularly discussed. (C) 2014 Elsevier B.V. All rights reserved.
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页码：39 / 44
页数：6
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