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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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equivalent normal series
equivalent norms
equivalent number of looks,ENL
equivalent objects
equivalent on shell diagram
equivalent on-shell diagram
equivalent orbital
equivalent particles
equivalent pendulum
equivalent pendulum model
equivalent percolation resistance
equivalent permeability tensor of rock mass
equivalent perturbation
equivalent phase shift technology
equivalent point
equivalent points
equivalent point system
equivalent polygons
equivalent power
equivalent principle
equivalent processes
equivalent projection
equivalent propositions
equivalent quadratic forms
equivalent rectangular bandwidth
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