Pulse height distribution of signals produced by exposing a thin GEM chamber to beta rays from an Sr-90 source

B. J. Ahn; Y. J. Ha; C. H. Hahn; S. T. Park; C. Y. Yi; Rena Lee

doi:10.3938/jkps.64.1281

Pulse height distribution of signals produced by exposing a thin GEM chamber to beta rays from an Sr-90 source

B. J. Ahn, Y. J. Ha, C. H. Hahn, S. T. Park, C. Y. Yi, Rena Lee

Department of Biomedical Engineering

Research output: Contribution to journal › Article › peer-review

Abstract

Researchers at Changwon National University's Radiation Detector Development Laboratory(RDD) fabricated a single-channel double-GEM(gas electron multiplier) chamber and measured the pulse height distribution of signals produced by exposing the chamber to an Sr-90 source provided by the Korea Research Institute of Standards and Science(KRISS). A beta-ray electron incident on the GEM chamber ionizes gaseous molecules in the drift region of the chamber by means of electromagnetic interactions. After the leased electrons are amplified by electron avalanches in the GEM stages, the multiplied electrons go from the lowest GEM foil toward the anode of the chamber and induce one signal pulse, corresponding to the incident electron, on the readout pad. The charge signal distribution measured during Sr-90 radioactive source irradiation was compared with the simulation done by using a Landau probability distribution. The energy loss distribution of beta-ray electrons, which deposited part of their energy in a thin GEM chamber while traversing gases within the drift region of that chamber, was in good agreement with the calculation of the Landau probability distribution. The pulse height distributions for energy losses of beta-ray electrons incident on the chamber due to Sr-90 disintegrations were observed in order to select a suitable gas mixture for the chamber. The ratios of the Ar/CO₂ gas were 75/25, 80/20, 85/15, and 90/10.

Original language	English
Pages (from-to)	1281-1287
Number of pages	7
Journal	Journal of the Korean Physical Society
Volume	64
Issue number	9
DOIs	https://doi.org/10.3938/jkps.64.1281
State	Published - May 2014

Bibliographical note

Funding Information:
This work was partially supported by grant No. R01-2006-000-10061-0 from the Basic Research Program of the Korea Science & Engineering Foundation, by the Education & Research Support Program of Changwon National University in 2011∼2012, and by the Nuclear Power Core Technology Development Program of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) granted financial resource from the Ministry of Trade, Industry & Energy, Republic of Korea (No. 20131510400050). Our experiment using an Sr-90 radiation source was performed by the Ionizing Radiation Team at the Korea Research Institute of Standard and Science in 2006. We appreciate Professor S. N. Kim at the Department of Physics Education, Korea National University of Education for his courtesy in providing the experimental equipment.

Keywords

Bethe-Bloch formula
Fermi beta decay theory
Landau probability distribution
Pulse height distribution
Single-channel double-GEM chamber
Sr-90 source

Access to Document

10.3938/jkps.64.1281

Cite this

@article{c396a046fb7a49e2b2525e1c92c6b13b,

title = "Pulse height distribution of signals produced by exposing a thin GEM chamber to beta rays from an Sr-90 source",

abstract = "Researchers at Changwon National University's Radiation Detector Development Laboratory(RDD) fabricated a single-channel double-GEM(gas electron multiplier) chamber and measured the pulse height distribution of signals produced by exposing the chamber to an Sr-90 source provided by the Korea Research Institute of Standards and Science(KRISS). A beta-ray electron incident on the GEM chamber ionizes gaseous molecules in the drift region of the chamber by means of electromagnetic interactions. After the leased electrons are amplified by electron avalanches in the GEM stages, the multiplied electrons go from the lowest GEM foil toward the anode of the chamber and induce one signal pulse, corresponding to the incident electron, on the readout pad. The charge signal distribution measured during Sr-90 radioactive source irradiation was compared with the simulation done by using a Landau probability distribution. The energy loss distribution of beta-ray electrons, which deposited part of their energy in a thin GEM chamber while traversing gases within the drift region of that chamber, was in good agreement with the calculation of the Landau probability distribution. The pulse height distributions for energy losses of beta-ray electrons incident on the chamber due to Sr-90 disintegrations were observed in order to select a suitable gas mixture for the chamber. The ratios of the Ar/CO2 gas were 75/25, 80/20, 85/15, and 90/10.",

keywords = "Bethe-Bloch formula, Fermi beta decay theory, Landau probability distribution, Pulse height distribution, Single-channel double-GEM chamber, Sr-90 source",

author = "Ahn, {B. J.} and Ha, {Y. J.} and Hahn, {C. H.} and Park, {S. T.} and Yi, {C. Y.} and Rena Lee",

note = "Funding Information: This work was partially supported by grant No. R01-2006-000-10061-0 from the Basic Research Program of the Korea Science & Engineering Foundation, by the Education & Research Support Program of Changwon National University in 2011∼2012, and by the Nuclear Power Core Technology Development Program of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) granted financial resource from the Ministry of Trade, Industry & Energy, Republic of Korea (No. 20131510400050). Our experiment using an Sr-90 radiation source was performed by the Ionizing Radiation Team at the Korea Research Institute of Standard and Science in 2006. We appreciate Professor S. N. Kim at the Department of Physics Education, Korea National University of Education for his courtesy in providing the experimental equipment.",

year = "2014",

month = may,

doi = "10.3938/jkps.64.1281",

language = "English",

volume = "64",

pages = "1281--1287",

journal = "Journal of the Korean Physical Society",

issn = "0374-4884",

publisher = "Korean Physical Society",

number = "9",

}

TY - JOUR

T1 - Pulse height distribution of signals produced by exposing a thin GEM chamber to beta rays from an Sr-90 source

AU - Ahn, B. J.

AU - Ha, Y. J.

AU - Hahn, C. H.

AU - Park, S. T.

AU - Yi, C. Y.

AU - Lee, Rena

N1 - Funding Information: This work was partially supported by grant No. R01-2006-000-10061-0 from the Basic Research Program of the Korea Science & Engineering Foundation, by the Education & Research Support Program of Changwon National University in 2011∼2012, and by the Nuclear Power Core Technology Development Program of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) granted financial resource from the Ministry of Trade, Industry & Energy, Republic of Korea (No. 20131510400050). Our experiment using an Sr-90 radiation source was performed by the Ionizing Radiation Team at the Korea Research Institute of Standard and Science in 2006. We appreciate Professor S. N. Kim at the Department of Physics Education, Korea National University of Education for his courtesy in providing the experimental equipment.

PY - 2014/5

Y1 - 2014/5

N2 - Researchers at Changwon National University's Radiation Detector Development Laboratory(RDD) fabricated a single-channel double-GEM(gas electron multiplier) chamber and measured the pulse height distribution of signals produced by exposing the chamber to an Sr-90 source provided by the Korea Research Institute of Standards and Science(KRISS). A beta-ray electron incident on the GEM chamber ionizes gaseous molecules in the drift region of the chamber by means of electromagnetic interactions. After the leased electrons are amplified by electron avalanches in the GEM stages, the multiplied electrons go from the lowest GEM foil toward the anode of the chamber and induce one signal pulse, corresponding to the incident electron, on the readout pad. The charge signal distribution measured during Sr-90 radioactive source irradiation was compared with the simulation done by using a Landau probability distribution. The energy loss distribution of beta-ray electrons, which deposited part of their energy in a thin GEM chamber while traversing gases within the drift region of that chamber, was in good agreement with the calculation of the Landau probability distribution. The pulse height distributions for energy losses of beta-ray electrons incident on the chamber due to Sr-90 disintegrations were observed in order to select a suitable gas mixture for the chamber. The ratios of the Ar/CO2 gas were 75/25, 80/20, 85/15, and 90/10.

AB - Researchers at Changwon National University's Radiation Detector Development Laboratory(RDD) fabricated a single-channel double-GEM(gas electron multiplier) chamber and measured the pulse height distribution of signals produced by exposing the chamber to an Sr-90 source provided by the Korea Research Institute of Standards and Science(KRISS). A beta-ray electron incident on the GEM chamber ionizes gaseous molecules in the drift region of the chamber by means of electromagnetic interactions. After the leased electrons are amplified by electron avalanches in the GEM stages, the multiplied electrons go from the lowest GEM foil toward the anode of the chamber and induce one signal pulse, corresponding to the incident electron, on the readout pad. The charge signal distribution measured during Sr-90 radioactive source irradiation was compared with the simulation done by using a Landau probability distribution. The energy loss distribution of beta-ray electrons, which deposited part of their energy in a thin GEM chamber while traversing gases within the drift region of that chamber, was in good agreement with the calculation of the Landau probability distribution. The pulse height distributions for energy losses of beta-ray electrons incident on the chamber due to Sr-90 disintegrations were observed in order to select a suitable gas mixture for the chamber. The ratios of the Ar/CO2 gas were 75/25, 80/20, 85/15, and 90/10.

KW - Bethe-Bloch formula

KW - Fermi beta decay theory

KW - Landau probability distribution

KW - Pulse height distribution

KW - Single-channel double-GEM chamber

KW - Sr-90 source

UR - http://www.scopus.com/inward/record.url?scp=84901262372&partnerID=8YFLogxK

U2 - 10.3938/jkps.64.1281

DO - 10.3938/jkps.64.1281

M3 - Article

AN - SCOPUS:84901262372

SN - 0374-4884

VL - 64

SP - 1281

EP - 1287

JO - Journal of the Korean Physical Society

JF - Journal of the Korean Physical Society

IS - 9

ER -

Pulse height distribution of signals produced by exposing a thin GEM chamber to beta rays from an Sr-90 source

Abstract

Bibliographical note

Keywords

Access to Document

Fingerprint

Cite this