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1.The measurements of 248 Cm / 252 Cf spontaneous prompt fission neutron spectrum in the neutron energy range form 200keV to 12MeV wer performed by using TOF method. A micro ionization chamber aws used as fission fragment detector and stibene crystal as neutron detector. The flying paths of neutrons for the measurements were 30cm,50cm and 100cm respectively.
实验用一个微型电离室作为裂变碎片探测器 ,两个芪晶体中子探测器测量中子及一套基于微机的距离分别为 3 2 ,50和 1 0 0cm ,经过对数据的处理和分析给出了 2 0 0keV— 1 2MeV的中子能区内的实验数据 .收藏指正
2.Iron & manganese ions and their oxides act as electron donors and acceptors to supply energy for microbes, and prompt the metal recycle of the earth crust.
铁、锰离子或铁、锰氧化物可作为电子供体或受体被微生物催化氧化或还原,这种微生物催化作用是自然界金属循环、矿物形成与迁移的重要推动力。收藏指正
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