Abstract
A liquid-methane ionization chamber has potential for high-efficiency neutron detection. As a preliminary study, we constructed a liquid-methane ionization chamber to examine the response to γ-rays, α particles and neutrons. The chamber consisted of three disk-shaped parallel-plate electrodes immersed in liquid methane. Pulse height distributions were obtained using a charge-sensitive preamplifier to detect γ-rays emitted from 60Co, 22Na and 137Cs sources. The concentration of oxygen, an impurity in the liquid methane, was evaluated using an inverse electric-field method that made use of the large collection characteristics of ionized electrons generated by γ-rays. The response of the liquid-methane chamber to γ-rays was analyzed by searching for the position of the Compton-edge in the pulse-height distributions obtained for γ-rays of 1275 and 662 keV emitted by 22Na and 137Cs, respectively. The full-energy peak appeared in the pulse-height distribution of the output signals for the detection of α particles emitted by 241Am. A continuous pulse-height distribution was observed for neutrons emitted from an Am-Be source.
| Original language | English |
|---|---|
| Pages (from-to) | 613-621 |
| Number of pages | 9 |
| Journal | Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment |
| Volume | 539 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - Mar 1 2005 |
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All Science Journal Classification (ASJC) codes
- Nuclear and High Energy Physics
- Instrumentation
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Study of the liquid-methane ionization chamber. / Tanaka, Hiroki; Ariyoshi, Tetsuya; Uemura, Takeshi; Arima, Hidehiko; Maehata, Keisuke; Ishibashi, Kenji; Matsumoto, Yuzuru.
In: Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 539, No. 3, 01.03.2005, p. 613-621.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Study of the liquid-methane ionization chamber
AU - Tanaka, Hiroki
AU - Ariyoshi, Tetsuya
AU - Uemura, Takeshi
AU - Arima, Hidehiko
AU - Maehata, Keisuke
AU - Ishibashi, Kenji
AU - Matsumoto, Yuzuru
PY - 2005/3/1
Y1 - 2005/3/1
N2 - A liquid-methane ionization chamber has potential for high-efficiency neutron detection. As a preliminary study, we constructed a liquid-methane ionization chamber to examine the response to γ-rays, α particles and neutrons. The chamber consisted of three disk-shaped parallel-plate electrodes immersed in liquid methane. Pulse height distributions were obtained using a charge-sensitive preamplifier to detect γ-rays emitted from 60Co, 22Na and 137Cs sources. The concentration of oxygen, an impurity in the liquid methane, was evaluated using an inverse electric-field method that made use of the large collection characteristics of ionized electrons generated by γ-rays. The response of the liquid-methane chamber to γ-rays was analyzed by searching for the position of the Compton-edge in the pulse-height distributions obtained for γ-rays of 1275 and 662 keV emitted by 22Na and 137Cs, respectively. The full-energy peak appeared in the pulse-height distribution of the output signals for the detection of α particles emitted by 241Am. A continuous pulse-height distribution was observed for neutrons emitted from an Am-Be source.
AB - A liquid-methane ionization chamber has potential for high-efficiency neutron detection. As a preliminary study, we constructed a liquid-methane ionization chamber to examine the response to γ-rays, α particles and neutrons. The chamber consisted of three disk-shaped parallel-plate electrodes immersed in liquid methane. Pulse height distributions were obtained using a charge-sensitive preamplifier to detect γ-rays emitted from 60Co, 22Na and 137Cs sources. The concentration of oxygen, an impurity in the liquid methane, was evaluated using an inverse electric-field method that made use of the large collection characteristics of ionized electrons generated by γ-rays. The response of the liquid-methane chamber to γ-rays was analyzed by searching for the position of the Compton-edge in the pulse-height distributions obtained for γ-rays of 1275 and 662 keV emitted by 22Na and 137Cs, respectively. The full-energy peak appeared in the pulse-height distribution of the output signals for the detection of α particles emitted by 241Am. A continuous pulse-height distribution was observed for neutrons emitted from an Am-Be source.
UR - http://www.scopus.com/inward/record.url?scp=13944278897&partnerID=8YFLogxK
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U2 - 10.1016/j.nima.2004.10.033
DO - 10.1016/j.nima.2004.10.033
M3 - Article
AN - SCOPUS:13944278897
VL - 539
SP - 613
EP - 621
JO - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
JF - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
SN - 0168-9002
IS - 3
ER -