Segmented Ge detector rejection of internal beta activity produced by neutron irradiation
Future Ge spectrometers flown in space to observe cosmic gamma-ray sources will incorporate segmented detectors to reduce the background from radioactivity produced by energetic particle reactions. To demonstrate the effectiveness of a segmented Ge detector in rejecting background events due to the...
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| Veröffentlicht in: | IEEE transactions on nuclear science 1991-04, Vol.38 (2), p.218-220 |
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| container_title | IEEE transactions on nuclear science |
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| creator | Varnell, L.S. Callas, J.L. Mahoney, W.A. Pehl, R.H. Landis, D.A. Luke, P.N. Madden, N.W. |
| description | Future Ge spectrometers flown in space to observe cosmic gamma-ray sources will incorporate segmented detectors to reduce the background from radioactivity produced by energetic particle reactions. To demonstrate the effectiveness of a segmented Ge detector in rejecting background events due to the beta decay of internal radioactivity, a laboratory experiment has been carried out in which radioactivity was produced in the detector by neutron irradiation. A /sup 252/Cf source of neutrons was used to produce, by neutron capture on /sup 74/Ge (36.5% of natural Ge) in the detector itself, /sup 75/Ge (t/sub 1/2/=82.78 min), which decays by beta emission with a maximum electron kinetic energy of 1188 keV. By requiring that an ionizing event deposit energy in two or more of the five segments of the detector, each about 1-cm thick, the beta particles, which have a range of about 1-mm, are rejected, while most external gamma rays incident on the detector are counted.< > |
| doi_str_mv | 10.1109/23.289299 |
| format | Article |
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To demonstrate the effectiveness of a segmented Ge detector in rejecting background events due to the beta decay of internal radioactivity, a laboratory experiment has been carried out in which radioactivity was produced in the detector by neutron irradiation. A /sup 252/Cf source of neutrons was used to produce, by neutron capture on /sup 74/Ge (36.5% of natural Ge) in the detector itself, /sup 75/Ge (t/sub 1/2/=82.78 min), which decays by beta emission with a maximum electron kinetic energy of 1188 keV. By requiring that an ionizing event deposit energy in two or more of the five segments of the detector, each about 1-cm thick, the beta particles, which have a range of about 1-mm, are rejected, while most external gamma rays incident on the detector are counted.< ></description><identifier>ISSN: 0018-9499</identifier><identifier>EISSN: 1558-1578</identifier><identifier>DOI: 10.1109/23.289299</identifier><identifier>CODEN: IETNAE</identifier><language>eng</language><publisher>Legacy CDMS: IEEE</publisher><subject>440200 - Radiation Effects on Instrument Components, Instruments, or Electronic Systems ; ACTINIDE ISOTOPES ; ACTINIDE NUCLEI ; ALPHA DECAY RADIOISOTOPES ; BACKGROUND RADIATION ; BARYONS ; BETA DECAY ; BETA DECAY RADIOISOTOPES ; Beta rays ; BETA-MINUS DECAY RADIOISOTOPES ; CALIFORNIUM 252 ; CALIFORNIUM ISOTOPES ; COSMIC GAMMA SOURCES ; COSMIC RAY SOURCES ; DECAY ; Electron emission ; ELEMENTARY PARTICLES ; Energy capture ; EVEN-EVEN NUCLEI ; EVEN-ODD NUCLEI ; Event detection ; Exact sciences and technology ; FERMIONS ; Gamma ray detection ; Gamma ray detectors ; GE SEMICONDUCTOR DETECTORS ; GERMANIUM 74 ; GERMANIUM 75 ; GERMANIUM ISOTOPES ; HADRONS ; HEAVY NUCLEI ; HOURS LIVING RADIOISOTOPES ; INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY ; Instruments, apparatus, components and techniques common to several branches of physics and astronomy ; INTERMEDIATE MASS NUCLEI ; INTERNAL CONVERSION RADIOISOTOPES ; IRRADIATION ; ISOMERIC TRANSITION ISOTOPES ; ISOTOPES ; Kinetic energy ; Laboratories ; MEASURING INSTRUMENTS ; NEUTRONS ; NUCLEAR DECAY ; NUCLEI ; NUCLEONS ; Other topics in instruments, apparatus, components and techniques common to several branches of physics and astronomy ; Physics ; RADIATION DETECTORS ; RADIATION EFFECTS ; RADIATIONS ; RADIOISOTOPES ; SECONDS LIVING RADIO ; SEMICONDUCTOR DETECTORS ; SPACE FLIGHT ; Spacecraft Instrumentation ; Spectroscopy ; SPONTANEOUS FISSION RADIOISOTOPES ; STABLE ISOTOPES ; YEARS LIVING RADIOISOTOPES</subject><ispartof>IEEE transactions on nuclear science, 1991-04, Vol.38 (2), p.218-220</ispartof><rights>1992 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c385t-aca1f8d22b58adbd6df9c824542c38411f519101c65eb62132c2ba4c65510e6f3</citedby><cites>FETCH-LOGICAL-c385t-aca1f8d22b58adbd6df9c824542c38411f519101c65eb62132c2ba4c65510e6f3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://ieeexplore.ieee.org/document/289299$$EHTML$$P50$$Gieee$$H</linktohtml><link.rule.ids>230,314,776,780,792,881,27901,27902,54733</link.rule.ids><linktorsrc>$$Uhttps://ieeexplore.ieee.org/document/289299$$EView_record_in_IEEE$$FView_record_in_$$GIEEE</linktorsrc><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=5437850$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.osti.gov/biblio/5044335$$D View this record in Osti.gov$$Hfree_for_read</backlink></links><search><creatorcontrib>Varnell, L.S.</creatorcontrib><creatorcontrib>Callas, J.L.</creatorcontrib><creatorcontrib>Mahoney, W.A.</creatorcontrib><creatorcontrib>Pehl, R.H.</creatorcontrib><creatorcontrib>Landis, D.A.</creatorcontrib><creatorcontrib>Luke, P.N.</creatorcontrib><creatorcontrib>Madden, N.W.</creatorcontrib><title>Segmented Ge detector rejection of internal beta activity produced by neutron irradiation</title><title>IEEE transactions on nuclear science</title><addtitle>TNS</addtitle><description>Future Ge spectrometers flown in space to observe cosmic gamma-ray sources will incorporate segmented detectors to reduce the background from radioactivity produced by energetic particle reactions. To demonstrate the effectiveness of a segmented Ge detector in rejecting background events due to the beta decay of internal radioactivity, a laboratory experiment has been carried out in which radioactivity was produced in the detector by neutron irradiation. A /sup 252/Cf source of neutrons was used to produce, by neutron capture on /sup 74/Ge (36.5% of natural Ge) in the detector itself, /sup 75/Ge (t/sub 1/2/=82.78 min), which decays by beta emission with a maximum electron kinetic energy of 1188 keV. By requiring that an ionizing event deposit energy in two or more of the five segments of the detector, each about 1-cm thick, the beta particles, which have a range of about 1-mm, are rejected, while most external gamma rays incident on the detector are counted.< ></description><subject>440200 - Radiation Effects on Instrument Components, Instruments, or Electronic Systems</subject><subject>ACTINIDE ISOTOPES</subject><subject>ACTINIDE NUCLEI</subject><subject>ALPHA DECAY RADIOISOTOPES</subject><subject>BACKGROUND RADIATION</subject><subject>BARYONS</subject><subject>BETA DECAY</subject><subject>BETA DECAY RADIOISOTOPES</subject><subject>Beta rays</subject><subject>BETA-MINUS DECAY RADIOISOTOPES</subject><subject>CALIFORNIUM 252</subject><subject>CALIFORNIUM ISOTOPES</subject><subject>COSMIC GAMMA SOURCES</subject><subject>COSMIC RAY SOURCES</subject><subject>DECAY</subject><subject>Electron emission</subject><subject>ELEMENTARY PARTICLES</subject><subject>Energy capture</subject><subject>EVEN-EVEN NUCLEI</subject><subject>EVEN-ODD NUCLEI</subject><subject>Event detection</subject><subject>Exact sciences and technology</subject><subject>FERMIONS</subject><subject>Gamma ray detection</subject><subject>Gamma ray detectors</subject><subject>GE SEMICONDUCTOR DETECTORS</subject><subject>GERMANIUM 74</subject><subject>GERMANIUM 75</subject><subject>GERMANIUM ISOTOPES</subject><subject>HADRONS</subject><subject>HEAVY NUCLEI</subject><subject>HOURS LIVING RADIOISOTOPES</subject><subject>INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY</subject><subject>Instruments, apparatus, components and techniques common to several branches of physics and astronomy</subject><subject>INTERMEDIATE MASS NUCLEI</subject><subject>INTERNAL CONVERSION RADIOISOTOPES</subject><subject>IRRADIATION</subject><subject>ISOMERIC TRANSITION ISOTOPES</subject><subject>ISOTOPES</subject><subject>Kinetic energy</subject><subject>Laboratories</subject><subject>MEASURING INSTRUMENTS</subject><subject>NEUTRONS</subject><subject>NUCLEAR DECAY</subject><subject>NUCLEI</subject><subject>NUCLEONS</subject><subject>Other topics in instruments, apparatus, components and techniques common to several branches of physics and astronomy</subject><subject>Physics</subject><subject>RADIATION DETECTORS</subject><subject>RADIATION EFFECTS</subject><subject>RADIATIONS</subject><subject>RADIOISOTOPES</subject><subject>SECONDS LIVING RADIO</subject><subject>SEMICONDUCTOR DETECTORS</subject><subject>SPACE FLIGHT</subject><subject>Spacecraft Instrumentation</subject><subject>Spectroscopy</subject><subject>SPONTANEOUS FISSION RADIOISOTOPES</subject><subject>STABLE ISOTOPES</subject><subject>YEARS LIVING RADIOISOTOPES</subject><issn>0018-9499</issn><issn>1558-1578</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1991</creationdate><recordtype>article</recordtype><sourceid>CYI</sourceid><recordid>eNqFkb1rHDEQxUWIwRfbhduQQoQQSLG2vuZOKo1JnIAhRewildBqZxOZPa0j6QL332eOPdymkkbze0_zGMYupbiSUrhrpa-Udcq5V2wlAWwnYWNfs5UQ0nbOOHfK3tT6RKUBASv28wf-2mJuOPA75AM2jG0uvOATXdKc-TzyRO2Sw8R7bIEHev-b2p4_l3nYRRL2e55x1wrRqZQwpHBQnrOTMUwVL47nGXv88vnh9mt3__3u2-3NfRe1hdaFGORoB6V6sGHoh_UwumiVAaMIMFKOIJ0UMq4B-7WSWkXVB0MlSIHrUZ-x94vvXFvyNSaK8DvOOVMAD8IYrYGgjwtEQ__ZYW1-m2rEaQoZ5131yoIF7ez_QZrLbdyGwE8LGMtca8HRP5e0DWXvpfCHVXil_bIKYj8cTUONYRpLyDHVFwEYvbEgCHu3YDnU4HMr1UtH2QWtEA4ub5d2QsQX8fGLfyWTmLs</recordid><startdate>19910401</startdate><enddate>19910401</enddate><creator>Varnell, L.S.</creator><creator>Callas, J.L.</creator><creator>Mahoney, W.A.</creator><creator>Pehl, R.H.</creator><creator>Landis, D.A.</creator><creator>Luke, P.N.</creator><creator>Madden, N.W.</creator><general>IEEE</general><general>Institute of Electrical and Electronics Engineers</general><scope>CYE</scope><scope>CYI</scope><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>8FD</scope><scope>FR3</scope><scope>H8D</scope><scope>KR7</scope><scope>L7M</scope><scope>7U5</scope><scope>OTOTI</scope></search><sort><creationdate>19910401</creationdate><title>Segmented Ge detector rejection of internal beta activity produced by neutron irradiation</title><author>Varnell, L.S. ; Callas, J.L. ; Mahoney, W.A. ; Pehl, R.H. ; Landis, D.A. ; Luke, P.N. ; Madden, N.W.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c385t-aca1f8d22b58adbd6df9c824542c38411f519101c65eb62132c2ba4c65510e6f3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1991</creationdate><topic>440200 - Radiation Effects on Instrument Components, Instruments, or Electronic Systems</topic><topic>ACTINIDE ISOTOPES</topic><topic>ACTINIDE NUCLEI</topic><topic>ALPHA DECAY RADIOISOTOPES</topic><topic>BACKGROUND RADIATION</topic><topic>BARYONS</topic><topic>BETA DECAY</topic><topic>BETA DECAY RADIOISOTOPES</topic><topic>Beta rays</topic><topic>BETA-MINUS DECAY RADIOISOTOPES</topic><topic>CALIFORNIUM 252</topic><topic>CALIFORNIUM ISOTOPES</topic><topic>COSMIC GAMMA SOURCES</topic><topic>COSMIC RAY SOURCES</topic><topic>DECAY</topic><topic>Electron emission</topic><topic>ELEMENTARY PARTICLES</topic><topic>Energy capture</topic><topic>EVEN-EVEN NUCLEI</topic><topic>EVEN-ODD NUCLEI</topic><topic>Event detection</topic><topic>Exact sciences and technology</topic><topic>FERMIONS</topic><topic>Gamma ray detection</topic><topic>Gamma ray detectors</topic><topic>GE SEMICONDUCTOR DETECTORS</topic><topic>GERMANIUM 74</topic><topic>GERMANIUM 75</topic><topic>GERMANIUM ISOTOPES</topic><topic>HADRONS</topic><topic>HEAVY NUCLEI</topic><topic>HOURS LIVING RADIOISOTOPES</topic><topic>INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY</topic><topic>Instruments, apparatus, components and techniques common to several branches of physics and astronomy</topic><topic>INTERMEDIATE MASS NUCLEI</topic><topic>INTERNAL CONVERSION RADIOISOTOPES</topic><topic>IRRADIATION</topic><topic>ISOMERIC TRANSITION ISOTOPES</topic><topic>ISOTOPES</topic><topic>Kinetic energy</topic><topic>Laboratories</topic><topic>MEASURING INSTRUMENTS</topic><topic>NEUTRONS</topic><topic>NUCLEAR DECAY</topic><topic>NUCLEI</topic><topic>NUCLEONS</topic><topic>Other topics in instruments, apparatus, components and techniques common to several branches of physics and astronomy</topic><topic>Physics</topic><topic>RADIATION DETECTORS</topic><topic>RADIATION EFFECTS</topic><topic>RADIATIONS</topic><topic>RADIOISOTOPES</topic><topic>SECONDS LIVING RADIO</topic><topic>SEMICONDUCTOR DETECTORS</topic><topic>SPACE FLIGHT</topic><topic>Spacecraft Instrumentation</topic><topic>Spectroscopy</topic><topic>SPONTANEOUS FISSION RADIOISOTOPES</topic><topic>STABLE ISOTOPES</topic><topic>YEARS LIVING RADIOISOTOPES</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Varnell, L.S.</creatorcontrib><creatorcontrib>Callas, J.L.</creatorcontrib><creatorcontrib>Mahoney, W.A.</creatorcontrib><creatorcontrib>Pehl, R.H.</creatorcontrib><creatorcontrib>Landis, D.A.</creatorcontrib><creatorcontrib>Luke, P.N.</creatorcontrib><creatorcontrib>Madden, N.W.</creatorcontrib><collection>NASA Scientific and Technical Information</collection><collection>NASA Technical Reports Server</collection><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>Aerospace Database</collection><collection>Civil Engineering Abstracts</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>OSTI.GOV</collection><jtitle>IEEE transactions on nuclear science</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Varnell, L.S.</au><au>Callas, J.L.</au><au>Mahoney, W.A.</au><au>Pehl, R.H.</au><au>Landis, D.A.</au><au>Luke, P.N.</au><au>Madden, N.W.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Segmented Ge detector rejection of internal beta activity produced by neutron irradiation</atitle><jtitle>IEEE transactions on nuclear science</jtitle><stitle>TNS</stitle><date>1991-04-01</date><risdate>1991</risdate><volume>38</volume><issue>2</issue><spage>218</spage><epage>220</epage><pages>218-220</pages><issn>0018-9499</issn><eissn>1558-1578</eissn><coden>IETNAE</coden><abstract>Future Ge spectrometers flown in space to observe cosmic gamma-ray sources will incorporate segmented detectors to reduce the background from radioactivity produced by energetic particle reactions. To demonstrate the effectiveness of a segmented Ge detector in rejecting background events due to the beta decay of internal radioactivity, a laboratory experiment has been carried out in which radioactivity was produced in the detector by neutron irradiation. A /sup 252/Cf source of neutrons was used to produce, by neutron capture on /sup 74/Ge (36.5% of natural Ge) in the detector itself, /sup 75/Ge (t/sub 1/2/=82.78 min), which decays by beta emission with a maximum electron kinetic energy of 1188 keV. By requiring that an ionizing event deposit energy in two or more of the five segments of the detector, each about 1-cm thick, the beta particles, which have a range of about 1-mm, are rejected, while most external gamma rays incident on the detector are counted.< ></abstract><cop>Legacy CDMS</cop><pub>IEEE</pub><doi>10.1109/23.289299</doi><tpages>3</tpages></addata></record> |
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| subjects | 440200 - Radiation Effects on Instrument Components, Instruments, or Electronic Systems ACTINIDE ISOTOPES ACTINIDE NUCLEI ALPHA DECAY RADIOISOTOPES BACKGROUND RADIATION BARYONS BETA DECAY BETA DECAY RADIOISOTOPES Beta rays BETA-MINUS DECAY RADIOISOTOPES CALIFORNIUM 252 CALIFORNIUM ISOTOPES COSMIC GAMMA SOURCES COSMIC RAY SOURCES DECAY Electron emission ELEMENTARY PARTICLES Energy capture EVEN-EVEN NUCLEI EVEN-ODD NUCLEI Event detection Exact sciences and technology FERMIONS Gamma ray detection Gamma ray detectors GE SEMICONDUCTOR DETECTORS GERMANIUM 74 GERMANIUM 75 GERMANIUM ISOTOPES HADRONS HEAVY NUCLEI HOURS LIVING RADIOISOTOPES INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY Instruments, apparatus, components and techniques common to several branches of physics and astronomy INTERMEDIATE MASS NUCLEI INTERNAL CONVERSION RADIOISOTOPES IRRADIATION ISOMERIC TRANSITION ISOTOPES ISOTOPES Kinetic energy Laboratories MEASURING INSTRUMENTS NEUTRONS NUCLEAR DECAY NUCLEI NUCLEONS Other topics in instruments, apparatus, components and techniques common to several branches of physics and astronomy Physics RADIATION DETECTORS RADIATION EFFECTS RADIATIONS RADIOISOTOPES SECONDS LIVING RADIO SEMICONDUCTOR DETECTORS SPACE FLIGHT Spacecraft Instrumentation Spectroscopy SPONTANEOUS FISSION RADIOISOTOPES STABLE ISOTOPES YEARS LIVING RADIOISOTOPES |
| title | Segmented Ge detector rejection of internal beta activity produced by neutron irradiation |
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