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Non-linearity of recoil pulse height events in He-3 tubes
Regarding neutron spectrometry, energy calibration of a He-3 counter was performed for neutron energies up to about 7 MeV, for various operating voltages in the proportionality region. Full-energy peak position is linearly correlated with neutron energy, while the position of the 3He recoil peak dev...
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Published in: | Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment Accelerators, spectrometers, detectors and associated equipment, 2010-06, Vol.618 (1), p.284-293 |
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creator | Manolopoulou, M. Fragopoulou, M. Stoulos, S. Westmeier, W. Lagogiannis, A. Zamani, M. |
description | Regarding neutron spectrometry, energy calibration of a He-3 counter was performed for neutron energies up to about 7
MeV, for various operating voltages in the proportionality region. Full-energy peak position is linearly correlated with neutron energy, while the position of the
3He recoil peak deviates from a linear response, especially in the lower energy region. By means of the linear full-energy peak calibration, recoil peak energies are found to be significantly lower than those resulting from the kinematics of the reaction. The pulse-height loss is attributed to
initial recombination. Using the Bragg curve of the recoiling nucleus in the counter gas mixture, it is determined that the pulse-height loss corresponds to a constant portion, 33.5±1.3 %, of the fraction of energy deposited by a
3He nucleus traversing the gas mixture with a stopping power higher than 450
eV/μm. The energy calibration equation for the recoil peaks is derived using the following: (i) the range-energy relation and the stopping power function for a
3He nucleus in the gas mixture where the coefficients of both functions were determined via Monte Carlo calculations, and (ii) the experimentally determined recombination coefficient. |
doi_str_mv | 10.1016/j.nima.2010.02.267 |
format | article |
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MeV, for various operating voltages in the proportionality region. Full-energy peak position is linearly correlated with neutron energy, while the position of the
3He recoil peak deviates from a linear response, especially in the lower energy region. By means of the linear full-energy peak calibration, recoil peak energies are found to be significantly lower than those resulting from the kinematics of the reaction. The pulse-height loss is attributed to
initial recombination. Using the Bragg curve of the recoiling nucleus in the counter gas mixture, it is determined that the pulse-height loss corresponds to a constant portion, 33.5±1.3 %, of the fraction of energy deposited by a
3He nucleus traversing the gas mixture with a stopping power higher than 450
eV/μm. The energy calibration equation for the recoil peaks is derived using the following: (i) the range-energy relation and the stopping power function for a
3He nucleus in the gas mixture where the coefficients of both functions were determined via Monte Carlo calculations, and (ii) the experimentally determined recombination coefficient.</description><identifier>ISSN: 0168-9002</identifier><identifier>EISSN: 1872-9576</identifier><identifier>DOI: 10.1016/j.nima.2010.02.267</identifier><language>eng</language><publisher>Elsevier B.V</publisher><subject>Calibration ; Energy (nuclear) ; Gas mixtures ; He-3 ; Mathematical analysis ; Monte Carlo methods ; Neutron detectors ; Neutron measurements ; Nuclei ; Proportional counters ; Recoil ; Stopping power</subject><ispartof>Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, 2010-06, Vol.618 (1), p.284-293</ispartof><rights>2010 Elsevier B.V.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><cites>FETCH-LOGICAL-c283t-f12d3003bd9152f69dcc13f2e6a601a14d5fb457c30f5c079cdcfaff4eddfbfc3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,27924,27925</link.rule.ids></links><search><creatorcontrib>Manolopoulou, M.</creatorcontrib><creatorcontrib>Fragopoulou, M.</creatorcontrib><creatorcontrib>Stoulos, S.</creatorcontrib><creatorcontrib>Westmeier, W.</creatorcontrib><creatorcontrib>Lagogiannis, A.</creatorcontrib><creatorcontrib>Zamani, M.</creatorcontrib><title>Non-linearity of recoil pulse height events in He-3 tubes</title><title>Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment</title><description>Regarding neutron spectrometry, energy calibration of a He-3 counter was performed for neutron energies up to about 7
MeV, for various operating voltages in the proportionality region. Full-energy peak position is linearly correlated with neutron energy, while the position of the
3He recoil peak deviates from a linear response, especially in the lower energy region. By means of the linear full-energy peak calibration, recoil peak energies are found to be significantly lower than those resulting from the kinematics of the reaction. The pulse-height loss is attributed to
initial recombination. Using the Bragg curve of the recoiling nucleus in the counter gas mixture, it is determined that the pulse-height loss corresponds to a constant portion, 33.5±1.3 %, of the fraction of energy deposited by a
3He nucleus traversing the gas mixture with a stopping power higher than 450
eV/μm. The energy calibration equation for the recoil peaks is derived using the following: (i) the range-energy relation and the stopping power function for a
3He nucleus in the gas mixture where the coefficients of both functions were determined via Monte Carlo calculations, and (ii) the experimentally determined recombination coefficient.</description><subject>Calibration</subject><subject>Energy (nuclear)</subject><subject>Gas mixtures</subject><subject>He-3</subject><subject>Mathematical analysis</subject><subject>Monte Carlo methods</subject><subject>Neutron detectors</subject><subject>Neutron measurements</subject><subject>Nuclei</subject><subject>Proportional counters</subject><subject>Recoil</subject><subject>Stopping power</subject><issn>0168-9002</issn><issn>1872-9576</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2010</creationdate><recordtype>article</recordtype><recordid>eNp9kEFLwzAUx4MoOKdfwFNunlpfkjZpwYsM3YShFz2HNnlxGV07k3awb2_GPPsuf3j8_g_ej5B7BjkDJh-3ee93Tc4hLYDnXKoLMmOV4lldKnlJZgmqshqAX5ObGLeQplbVjNTvQ591vscm-PFIB0cDmsF3dD91EekG_fdmpHjAfozU93SFmaDj1GK8JVeuSczdX87J1-vL52KVrT-Wb4vndWZ4JcbMMW4FgGhtzUruZG2NYcJxlI0E1rDClq4tSmUEuNKAqo01rnGuQGtd64yYk4fz3X0YfiaMo975aLDrmh6HKWpVClkokCKR_EyaMMQY0Ol9SFbCUTPQJ016q0-a9EmTBq6TplR6Opcw_XDwGHQ0HnuD1icTo7aD_6_-C9WMcQ0</recordid><startdate>20100601</startdate><enddate>20100601</enddate><creator>Manolopoulou, M.</creator><creator>Fragopoulou, M.</creator><creator>Stoulos, S.</creator><creator>Westmeier, W.</creator><creator>Lagogiannis, A.</creator><creator>Zamani, M.</creator><general>Elsevier B.V</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7U5</scope><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope></search><sort><creationdate>20100601</creationdate><title>Non-linearity of recoil pulse height events in He-3 tubes</title><author>Manolopoulou, M. ; Fragopoulou, M. ; Stoulos, S. ; Westmeier, W. ; Lagogiannis, A. ; Zamani, M.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c283t-f12d3003bd9152f69dcc13f2e6a601a14d5fb457c30f5c079cdcfaff4eddfbfc3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2010</creationdate><topic>Calibration</topic><topic>Energy (nuclear)</topic><topic>Gas mixtures</topic><topic>He-3</topic><topic>Mathematical analysis</topic><topic>Monte Carlo methods</topic><topic>Neutron detectors</topic><topic>Neutron measurements</topic><topic>Nuclei</topic><topic>Proportional counters</topic><topic>Recoil</topic><topic>Stopping power</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Manolopoulou, M.</creatorcontrib><creatorcontrib>Fragopoulou, M.</creatorcontrib><creatorcontrib>Stoulos, S.</creatorcontrib><creatorcontrib>Westmeier, W.</creatorcontrib><creatorcontrib>Lagogiannis, A.</creatorcontrib><creatorcontrib>Zamani, M.</creatorcontrib><collection>CrossRef</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Manolopoulou, M.</au><au>Fragopoulou, M.</au><au>Stoulos, S.</au><au>Westmeier, W.</au><au>Lagogiannis, A.</au><au>Zamani, M.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Non-linearity of recoil pulse height events in He-3 tubes</atitle><jtitle>Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment</jtitle><date>2010-06-01</date><risdate>2010</risdate><volume>618</volume><issue>1</issue><spage>284</spage><epage>293</epage><pages>284-293</pages><issn>0168-9002</issn><eissn>1872-9576</eissn><abstract>Regarding neutron spectrometry, energy calibration of a He-3 counter was performed for neutron energies up to about 7
MeV, for various operating voltages in the proportionality region. Full-energy peak position is linearly correlated with neutron energy, while the position of the
3He recoil peak deviates from a linear response, especially in the lower energy region. By means of the linear full-energy peak calibration, recoil peak energies are found to be significantly lower than those resulting from the kinematics of the reaction. The pulse-height loss is attributed to
initial recombination. Using the Bragg curve of the recoiling nucleus in the counter gas mixture, it is determined that the pulse-height loss corresponds to a constant portion, 33.5±1.3 %, of the fraction of energy deposited by a
3He nucleus traversing the gas mixture with a stopping power higher than 450
eV/μm. The energy calibration equation for the recoil peaks is derived using the following: (i) the range-energy relation and the stopping power function for a
3He nucleus in the gas mixture where the coefficients of both functions were determined via Monte Carlo calculations, and (ii) the experimentally determined recombination coefficient.</abstract><pub>Elsevier B.V</pub><doi>10.1016/j.nima.2010.02.267</doi><tpages>10</tpages></addata></record> |
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language | eng |
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source | ScienceDirect Journals |
subjects | Calibration Energy (nuclear) Gas mixtures He-3 Mathematical analysis Monte Carlo methods Neutron detectors Neutron measurements Nuclei Proportional counters Recoil Stopping power |
title | Non-linearity of recoil pulse height events in He-3 tubes |
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