Low Voltage He3‐Filled Proportional Counter for Efficient Detection of Thermal and Epithermal Neutrons
Neutron counters using He3 gas at absolute pressures up to 10 atm have been constructed and tested. The relative detection efficiency for thermal, epicadmium, and fast neutrons was measured as a function of pressure from 1 to 10 atm, and compared with similar data from a boron trifluoride counter of...
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| Veröffentlicht in: | Review of scientific instruments 1962-08, Vol.33 (8), p.866-868 |
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| container_end_page | 868 |
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| container_title | Review of scientific instruments |
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| creator | Mills, William R. Caldwell, Richard L. Morgan, Ira L. |
| description | Neutron counters using He3 gas at absolute pressures up to 10 atm have been constructed and tested. The relative detection efficiency for thermal, epicadmium, and fast neutrons was measured as a function of pressure from 1 to 10 atm, and compared with similar data from a boron trifluoride counter of the same size filled to a pressure of 65 cm of B10F3 gas. The ratio He3/BF3 increases approximately linearly with pressure for epicadmium and fast neutrons, reaching values of 26.6 and 21.6, respectively, at 10 atm He3 pressure. This ratio shows a saturation effect for thermal neutrons, becoming 4.45 at 10 atm He3 pressure. The gamma‐ray response has been found to be low with proper pulse shaping. High voltage plateau curves for 3‐ and 7‐atm counters are given and indicate operating regions at least 100 V wide at a counter high voltage of about 1200 V. |
| doi_str_mv | 10.1063/1.1717994 |
| format | Article |
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The relative detection efficiency for thermal, epicadmium, and fast neutrons was measured as a function of pressure from 1 to 10 atm, and compared with similar data from a boron trifluoride counter of the same size filled to a pressure of 65 cm of B10F3 gas. The ratio He3/BF3 increases approximately linearly with pressure for epicadmium and fast neutrons, reaching values of 26.6 and 21.6, respectively, at 10 atm He3 pressure. This ratio shows a saturation effect for thermal neutrons, becoming 4.45 at 10 atm He3 pressure. The gamma‐ray response has been found to be low with proper pulse shaping. High voltage plateau curves for 3‐ and 7‐atm counters are given and indicate operating regions at least 100 V wide at a counter high voltage of about 1200 V.</description><identifier>ISSN: 0034-6748</identifier><identifier>EISSN: 1089-7623</identifier><identifier>DOI: 10.1063/1.1717994</identifier><identifier>CODEN: RSINAK</identifier><language>eng</language><publisher>American Institute of Physics (AIP)</publisher><subject>BORON 10 ; BORON FLUORIDES ; EFFICIENCY ; ELECTRIC POTENTIAL ; EPITHERMAL NEUTRONS ; FAST NEUTRONS ; GAMMA RADIATION ; HELIUM 3 ; NEUTRON DETECTION ; OTHER INSTRUMENTATION ; PRESSURE ; PROPORTIONAL COUNTERS ; THERMAL NEUTRONS</subject><ispartof>Review of scientific instruments, 1962-08, Vol.33 (8), p.866-868</ispartof><rights>The American Institute of Physics</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c322t-8a9eb0d22dabbbcdc5ee89c4291619622f48f6f7dcaee7a509ba09ae2b5755663</citedby><cites>FETCH-LOGICAL-c322t-8a9eb0d22dabbbcdc5ee89c4291619622f48f6f7dcaee7a509ba09ae2b5755663</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://pubs.aip.org/rsi/article-lookup/doi/10.1063/1.1717994$$EHTML$$P50$$Gscitation$$H</linktohtml><link.rule.ids>230,314,780,784,885,1559,27924,27925,76390</link.rule.ids><backlink>$$Uhttps://www.osti.gov/biblio/4805473$$D View this record in Osti.gov$$Hfree_for_read</backlink></links><search><creatorcontrib>Mills, William R.</creatorcontrib><creatorcontrib>Caldwell, Richard L.</creatorcontrib><creatorcontrib>Morgan, Ira L.</creatorcontrib><creatorcontrib>Socony Mobil Oil Co., Inc., Dallas, Tex</creatorcontrib><title>Low Voltage He3‐Filled Proportional Counter for Efficient Detection of Thermal and Epithermal Neutrons</title><title>Review of scientific instruments</title><description>Neutron counters using He3 gas at absolute pressures up to 10 atm have been constructed and tested. The relative detection efficiency for thermal, epicadmium, and fast neutrons was measured as a function of pressure from 1 to 10 atm, and compared with similar data from a boron trifluoride counter of the same size filled to a pressure of 65 cm of B10F3 gas. The ratio He3/BF3 increases approximately linearly with pressure for epicadmium and fast neutrons, reaching values of 26.6 and 21.6, respectively, at 10 atm He3 pressure. This ratio shows a saturation effect for thermal neutrons, becoming 4.45 at 10 atm He3 pressure. The gamma‐ray response has been found to be low with proper pulse shaping. High voltage plateau curves for 3‐ and 7‐atm counters are given and indicate operating regions at least 100 V wide at a counter high voltage of about 1200 V.</description><subject>BORON 10</subject><subject>BORON FLUORIDES</subject><subject>EFFICIENCY</subject><subject>ELECTRIC POTENTIAL</subject><subject>EPITHERMAL NEUTRONS</subject><subject>FAST NEUTRONS</subject><subject>GAMMA RADIATION</subject><subject>HELIUM 3</subject><subject>NEUTRON DETECTION</subject><subject>OTHER INSTRUMENTATION</subject><subject>PRESSURE</subject><subject>PROPORTIONAL COUNTERS</subject><subject>THERMAL NEUTRONS</subject><issn>0034-6748</issn><issn>1089-7623</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1962</creationdate><recordtype>article</recordtype><recordid>eNqd0M1KAzEQB_AgCtbqwTcI3hS25mM32RyltlYo6qF6DdnsxK5sN0s2Vbz5CD6jT-IuLXh3LsPAj2Hmj9A5JRNKBL-mEyqpVCo9QCNKcpVIwfghGhHC00TIND9GJ133RvrKKB2h9dJ_4BdfR_MKeAH85-t7XtU1lPgp-NaHWPnG1Hjqt02EgJ0PeOZcZStoIr6FCHYQ2Du8WkPY9NQ0JZ61VdyPD7CNwTfdKTpypu7gbN_H6Hk-W00XyfLx7n56s0wsZywmuVFQkJKx0hRFYUubAeTKpkxRQZVgzKW5E06W1gBIkxFVGKIMsCKTWSYEH6OL3V7fxUp3tupPXFvfNP2lOs1Jlkreo8sdssF3XQCn21BtTPjUlOghR031PsfeXu3ssMsM3_4Pv_vwB3VbOv4LRPuDWw</recordid><startdate>196208</startdate><enddate>196208</enddate><creator>Mills, William R.</creator><creator>Caldwell, Richard L.</creator><creator>Morgan, Ira L.</creator><general>American Institute of Physics (AIP)</general><scope>AAYXX</scope><scope>CITATION</scope><scope>OTOTI</scope></search><sort><creationdate>196208</creationdate><title>Low Voltage He3‐Filled Proportional Counter for Efficient Detection of Thermal and Epithermal Neutrons</title><author>Mills, William R. ; Caldwell, Richard L. ; Morgan, Ira L.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c322t-8a9eb0d22dabbbcdc5ee89c4291619622f48f6f7dcaee7a509ba09ae2b5755663</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1962</creationdate><topic>BORON 10</topic><topic>BORON FLUORIDES</topic><topic>EFFICIENCY</topic><topic>ELECTRIC POTENTIAL</topic><topic>EPITHERMAL NEUTRONS</topic><topic>FAST NEUTRONS</topic><topic>GAMMA RADIATION</topic><topic>HELIUM 3</topic><topic>NEUTRON DETECTION</topic><topic>OTHER INSTRUMENTATION</topic><topic>PRESSURE</topic><topic>PROPORTIONAL COUNTERS</topic><topic>THERMAL NEUTRONS</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Mills, William R.</creatorcontrib><creatorcontrib>Caldwell, Richard L.</creatorcontrib><creatorcontrib>Morgan, Ira L.</creatorcontrib><creatorcontrib>Socony Mobil Oil Co., Inc., Dallas, Tex</creatorcontrib><collection>CrossRef</collection><collection>OSTI.GOV</collection><jtitle>Review of scientific instruments</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Mills, William R.</au><au>Caldwell, Richard L.</au><au>Morgan, Ira L.</au><aucorp>Socony Mobil Oil Co., Inc., Dallas, Tex</aucorp><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Low Voltage He3‐Filled Proportional Counter for Efficient Detection of Thermal and Epithermal Neutrons</atitle><jtitle>Review of scientific instruments</jtitle><date>1962-08</date><risdate>1962</risdate><volume>33</volume><issue>8</issue><spage>866</spage><epage>868</epage><pages>866-868</pages><issn>0034-6748</issn><eissn>1089-7623</eissn><coden>RSINAK</coden><abstract>Neutron counters using He3 gas at absolute pressures up to 10 atm have been constructed and tested. The relative detection efficiency for thermal, epicadmium, and fast neutrons was measured as a function of pressure from 1 to 10 atm, and compared with similar data from a boron trifluoride counter of the same size filled to a pressure of 65 cm of B10F3 gas. The ratio He3/BF3 increases approximately linearly with pressure for epicadmium and fast neutrons, reaching values of 26.6 and 21.6, respectively, at 10 atm He3 pressure. This ratio shows a saturation effect for thermal neutrons, becoming 4.45 at 10 atm He3 pressure. The gamma‐ray response has been found to be low with proper pulse shaping. High voltage plateau curves for 3‐ and 7‐atm counters are given and indicate operating regions at least 100 V wide at a counter high voltage of about 1200 V.</abstract><pub>American Institute of Physics (AIP)</pub><doi>10.1063/1.1717994</doi><tpages>3</tpages></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0034-6748 |
| ispartof | Review of scientific instruments, 1962-08, Vol.33 (8), p.866-868 |
| issn | 0034-6748 1089-7623 |
| language | eng |
| recordid | cdi_crossref_primary_10_1063_1_1717994 |
| source | AIP Digital Archive |
| subjects | BORON 10 BORON FLUORIDES EFFICIENCY ELECTRIC POTENTIAL EPITHERMAL NEUTRONS FAST NEUTRONS GAMMA RADIATION HELIUM 3 NEUTRON DETECTION OTHER INSTRUMENTATION PRESSURE PROPORTIONAL COUNTERS THERMAL NEUTRONS |
| title | Low Voltage He3‐Filled Proportional Counter for Efficient Detection of Thermal and Epithermal Neutrons |
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