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瞬发裂变中子测井
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瞬发裂变中子测井
Encyclopedia
理学
铀矿放射性测井
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prompt fission neutron logging
瞬发裂变中子测井
在井孔中开展的中子测量方法。该法利用脉冲中子源向钻孔周围的地层发射快中子,快中子被地层慢化后形成热中子群,热中子引发地层235U发生裂变反应,探测裂变反应过程中瞬时(约10-14秒)发射出来的裂变中子,该裂变中子称为瞬发裂变中子(约占235U裂变反应所能发射的全部裂变中子总量的99%以上),故称瞬发裂变中子测井。
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molecular fixed coordinator
molecular fluorescence analysis
molecular force
molecular force field
molecular force spectroscopy
molecular formula
molecular fountain
molecular fragment
molecular gas laser
molecular genetic diagnosis
molecular genetic map
molecular genetics
molecular geobiology
molecular geometry
molecular graphics
molecular hybridization
molecular hydrogen
molecular hypothesis of molten slags
molecular identification of Chinese medicinals
molecular identification of crude drug
molecular identification principles of multiple germplasm origin
molecular identification technology of aquatic germplasm
molecular Imaging
molecular imaging
molecular immunology
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