JP7373035B2 - 中性子比例計数管のためのクエンチガスとしての三フッ化ホウ素 - Google Patents
中性子比例計数管のためのクエンチガスとしての三フッ化ホウ素 Download PDFInfo
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- JP7373035B2 JP7373035B2 JP2022128009A JP2022128009A JP7373035B2 JP 7373035 B2 JP7373035 B2 JP 7373035B2 JP 2022128009 A JP2022128009 A JP 2022128009A JP 2022128009 A JP2022128009 A JP 2022128009A JP 7373035 B2 JP7373035 B2 JP 7373035B2
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- 238000010791 quenching Methods 0.000 title claims description 41
- WTEOIRVLGSZEPR-UHFFFAOYSA-N boron trifluoride Chemical compound FB(F)F WTEOIRVLGSZEPR-UHFFFAOYSA-N 0.000 title description 29
- 229910015900 BF3 Inorganic materials 0.000 title description 27
- 239000000203 mixture Substances 0.000 claims description 63
- 238000000034 method Methods 0.000 claims description 22
- 150000002500 ions Chemical class 0.000 claims description 12
- 238000010521 absorption reaction Methods 0.000 claims description 6
- 229910052786 argon Inorganic materials 0.000 claims description 6
- 229910052743 krypton Inorganic materials 0.000 claims description 6
- 239000007789 gas Substances 0.000 description 144
- SWQJXJOGLNCZEY-BJUDXGSMSA-N helium-3 atom Chemical compound [3He] SWQJXJOGLNCZEY-BJUDXGSMSA-N 0.000 description 18
- 230000000171 quenching effect Effects 0.000 description 10
- 230000005855 radiation Effects 0.000 description 10
- 230000035945 sensitivity Effects 0.000 description 9
- 238000001514 detection method Methods 0.000 description 8
- 239000002245 particle Substances 0.000 description 8
- ZOXJGFHDIHLPTG-BJUDXGSMSA-N Boron-10 Chemical compound [10B] ZOXJGFHDIHLPTG-BJUDXGSMSA-N 0.000 description 4
- 230000003321 amplification Effects 0.000 description 4
- 230000005865 ionizing radiation Effects 0.000 description 4
- 238000003199 nucleic acid amplification method Methods 0.000 description 4
- 125000004429 atom Chemical group 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 238000000354 decomposition reaction Methods 0.000 description 3
- 230000005684 electric field Effects 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- SANRKQGLYCLAFE-UHFFFAOYSA-H uranium hexafluoride Chemical compound F[U](F)(F)(F)(F)F SANRKQGLYCLAFE-UHFFFAOYSA-H 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 2
- ZOXJGFHDIHLPTG-IGMARMGPSA-N boron-11 atom Chemical compound [11B] ZOXJGFHDIHLPTG-IGMARMGPSA-N 0.000 description 2
- 239000007795 chemical reaction product Substances 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 229910052736 halogen Inorganic materials 0.000 description 2
- 150000002367 halogens Chemical class 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 239000003570 air Substances 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- JJWKPURADFRFRB-UHFFFAOYSA-N carbonyl sulfide Chemical compound O=C=S JJWKPURADFRFRB-UHFFFAOYSA-N 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- DNNSSWSSYDEUBZ-UHFFFAOYSA-N krypton atom Chemical compound [Kr] DNNSSWSSYDEUBZ-UHFFFAOYSA-N 0.000 description 1
- WHXSMMKQMYFTQS-IGMARMGPSA-N lithium-7 atom Chemical compound [7Li] WHXSMMKQMYFTQS-IGMARMGPSA-N 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000005433 particle physics related processes and functions Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000012857 radioactive material Substances 0.000 description 1
- 238000005215 recombination Methods 0.000 description 1
- 230000006798 recombination Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- TXEYQDLBPFQVAA-UHFFFAOYSA-N tetrafluoromethane Chemical compound FC(F)(F)F TXEYQDLBPFQVAA-UHFFFAOYSA-N 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 229910052724 xenon Inorganic materials 0.000 description 1
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T3/00—Measuring neutron radiation
- G01T3/008—Measuring neutron radiation using an ionisation chamber filled with a gas, liquid or solid, e.g. frozen liquid, dielectric
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J47/00—Tubes for determining the presence, intensity, density or energy of radiation or particles
- H01J47/12—Neutron detector tubes, e.g. BF3 tubes
- H01J47/1205—Neutron detector tubes, e.g. BF3 tubes using nuclear reactions of the type (n, alpha) in solid materials, e.g. Boron-10 (n,alpha) Lithium-7, Lithium-6 (n, alpha)Hydrogen-3
- H01J47/1222—Proportional counters
Landscapes
- High Energy & Nuclear Physics (AREA)
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- General Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Molecular Biology (AREA)
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Measurement Of Radiation (AREA)
- Electron Tubes For Measurement (AREA)
Description
10B+1n→[11B]→4He+7Li+2.8MeV
ホウ素-10(10B)が中性子(1n)を吸収して、ホウ素-11(11B)を得る。その後、ホウ素-11は、反応生成物ヘリウム-4(4He)及びリチウム-7(7Li)並びに2.8MeV(ガンマ線)へと減衰する。反応生成物の短い範囲は、総エネルギーが比較的短い距離で収集され得ることを意味する。これにより、比較的小さいパッケージにおける熱中性子信号からのより低エネルギーのガンマ線の弁別が可能になる。
Claims (18)
- 中性子比例計数管であって、
アノード及びカソードを含むチャンバと、
前記チャンバ内に収容されたガス混合物であって、
少なくとも1つの中性子感受性充填ガス、及び
BF3を含むクエンチガスを含む、ガス混合物と、を含み、
前記充填ガスが、He-3を含む、比例計数管。 - 中性子比例計数管であって、
アノード及びカソードを含むチャンバと、
前記チャンバ内に収容されたガス混合物であって、
少なくとも1つの中性子感受性充填ガス、及び
BF 3 を含むクエンチガスを含む、ガス混合物と、を含み、
前記充填ガスが、H 2 、又はUF 6 のうちの少なくとも1つを含む、比例計数管。 - 前記充填ガスが、100~5600バーンの範囲内の熱中性子吸収断面積を有する、請求項1又は2に記載の比例計数管。
- 前記充填ガスが、1~8バーンの範囲内の高速中性子全断面積を有する、請求項1又は2に記載の比例計数管。
- He-3が、1.5Psia~150Psiaの範囲内の分圧を提供するのに十分な量で前記ガス混合物中に存在する、請求項1に記載の比例計数管。
- 前記充填ガスが、He-4、H2、又はUF6のうちの少なくとも1つを含む、請求項1に記載の比例計数管。
- 前記ガス混合物が、前記ガス混合物内の一次イオンの平均自由行程を低減するように構成された少なくとも1つの停止ガスを更に含む、請求項1又は2に記載の比例計数管。
- 前記停止ガスが、Ar、Kr、又はXeのうちの少なくとも1つを含む、請求項7に記載の比例計数管。
- BF3が、0.002Psia~3.9Psiaの範囲内の分圧を提供するのに十分な量で前記ガス混合物中に存在する、請求項1又は2に記載の比例計数管。
- 中性子比例計数管を調製する方法であって、
アノード及びカソードを含むチャンバを備える中性子比例計数管を提供することと、
前記チャンバに、少なくとも1つの中性子感受性充填ガスと、BF3を含むクエンチガスとを含むガス混合物を充填することと、を含み、
前記充填ガスが、He-3を含む、方法。 - 中性子比例計数管を調製する方法であって、
アノード及びカソードを含むチャンバを備える中性子比例計数管を提供することと、
前記チャンバに、少なくとも1つの中性子感受性充填ガスと、BF 3 を含むクエンチガスとを含むガス混合物を充填することと、を含み、
前記充填ガスが、H 2 又はUF 6 のうちの少なくとも1つを含む、方法。 - 前記充填ガスが、100~5600バーンの範囲内の熱中性子吸収断面積を有する、請求項10又は11に記載の方法。
- 前記充填ガスが、1~8バーンの範囲内の高速中性子全断面積を有する、請求項10又は11に記載の方法。
- He-3が、1.5Psia~150Psiaの範囲内の分圧を提供するのに十分な量で前記ガス混合物中に存在する、請求項10に記載の方法。
- 前記充填ガスが、He-4、H2、又はUF6のうちの少なくとも1つを含む、請求項10に記載の方法。
- 前記ガス混合物が、前記ガス混合物内の一次イオンの平均自由行程を低減するように構成された少なくとも1つの停止ガスを更に含む、請求項10又は11に記載の方法。
- 前記停止ガスが、Ar、Kr、又はXeのうちの少なくとも1つを含む、請求項16に記載の方法。
- BF3が、0.002Psia~3.9Psiaの範囲内の分圧を提供するのに十分な量で前記ガス混合物中に存在する、請求項10又は11に記載の方法。
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US17/401,988 US11604293B2 (en) | 2021-08-13 | 2021-08-13 | Boron trifluoride as a quench gas for neutron proportional counters |
US17/401,988 | 2021-08-13 |
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JP2023026391A JP2023026391A (ja) | 2023-02-24 |
JP7373035B2 true JP7373035B2 (ja) | 2023-11-01 |
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US (1) | US11604293B2 (ja) |
EP (1) | EP4134710A1 (ja) |
JP (1) | JP7373035B2 (ja) |
CN (1) | CN115877439A (ja) |
AU (1) | AU2022206778B2 (ja) |
CA (1) | CA3168865C (ja) |
Citations (3)
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US20080283762A1 (en) | 2007-05-14 | 2008-11-20 | General Electric Company | Radiation detector employing amorphous material |
US20160133447A1 (en) | 2014-11-08 | 2016-05-12 | Jefferson Science Associates, Llc | Method for detecting and distinguishing between specific types of environmental radiation using a high pressure ionization chamber with pulse-mode readout |
US20170307768A1 (en) | 2013-03-14 | 2017-10-26 | Robert Ernest Troxler | Systems and methods for high voltage conversion and multiplication for ionizing radiation detection |
Family Cites Families (11)
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US3102198A (en) * | 1961-11-16 | 1963-08-27 | Socony Mobil Oil Co Inc | Sensitive low voltage proportional counter for neutron detection containing he3 at superatmospheric pressure |
US3240971A (en) | 1962-05-29 | 1966-03-15 | Texas Nuclear Corp | Helium-3 thermal neutron proportional counter |
GB1240379A (en) | 1969-07-01 | 1971-07-21 | Atomic Energy Authority Uk | Neutron counters |
JPS59105589A (ja) | 1982-12-08 | 1984-06-18 | Mitsubishi Electric Corp | Bf↓3計数管ガス充填装置 |
JPH0434829A (ja) * | 1990-05-30 | 1992-02-05 | Aloka Co Ltd | 広エネルギー中性子検出器 |
US20130119261A1 (en) * | 2011-11-10 | 2013-05-16 | General Electric Company | Neutron detector and method for detecting neutrons |
CN103513267B (zh) | 2012-06-21 | 2016-05-11 | 同方威视技术股份有限公司 | 含硼气膜快中子探测器 |
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- 2022-08-05 CN CN202210936890.1A patent/CN115877439A/zh active Pending
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US20080283762A1 (en) | 2007-05-14 | 2008-11-20 | General Electric Company | Radiation detector employing amorphous material |
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AU2022206778A1 (en) | 2023-03-02 |
AU2022206778B2 (en) | 2024-05-30 |
CA3168865A1 (en) | 2023-02-13 |
US11604293B2 (en) | 2023-03-14 |
CN115877439A (zh) | 2023-03-31 |
JP2023026391A (ja) | 2023-02-24 |
US20230045923A1 (en) | 2023-02-16 |
EP4134710A1 (en) | 2023-02-15 |
CA3168865C (en) | 2024-05-07 |
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