neutron lifetime 中文意思是什麼
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Radiation effects have been investigated up to - 30 dpa by the heavy ion irradiation simulation and positron annihilation lifetime techniques in the home - made modified 316l stainless steel and the commercially available stainless steel and tungsten, which are used as the beam window materials for the spallation neutron source in accelerator driven radioactive clean nuclear power system ( ads ). their radiation resistance properties are compared
本工作採用重離子輻照模擬和正電子湮沒壽命測量技術研究了加速器驅動潔凈能源系統（ ads ）散裂中子源束窗材料鎢、普通不銹鋼和國產改進型316l奧氏體不銹鋼在0 30dpa輻照劑量范圍的輻照效應，並對它們的抗輻照性能作了比較。 -
Heavy ion irradiation of 80 mev 12c or 85 mev 19f is used to simulate the proton and neutron irradiation of the beam window materials for ads. the irradiation effects are examined by the positron annihilation lifetime technique
在ads散裂中子源束窗材料輻照效應研究中，使用80mev的~ （ 12 ） c或85mev ~ （ 19 ） f離子模擬中子及質子輻照在束窗材料中產生的輻照損傷。 -
It aiso uses high performance embedded pc with networking support and open iogging piaborm, therefore, meeting the complicated reservoir iogging requirements and having a better extendibiiity. lt aliows matching with neutron lifetime iogging tool and downhoie imaging series in addition to providing openhoie, casedhole, production logging service and coring operation
該系統除能滿足常規的裸眼井測井、套管井測井、生產井測井、射孔取芯作業外，還能配接中子壽命測井儀和成像系列下井儀器。 -
In czochralski silicon crystals ( czsi ) through fast neutron irradiation, formation and conversion of defects were investigated using fourier transform infrared spectroscopy ( ftir ), positron annihilation technology ( pat ) and scanning electron microscope ( sem ). the results showed that fast neutron irradiation induced large quantity of metastable defects which can be the capture centers of positron, positron annihilation average lifetime of samples increased with increasing of irradiation dosage. positron annihilation average lifetime of irradiation samples through dosage up to 1 1018 n. cm - 2 tended to constant
本文對直拉硅樣品進行了不同劑量的快中子輻照，在硅中引入大量的亞穩態缺陷，研究這些亞穩態缺陷的形成，並在較寬的溫度范圍內對輻照樣品進行了退火處理，研究退火后亞穩態缺陷的轉化及同硅中氧的相互作用，應用傅立葉變換紅外光譜技術（ ftir ） 、正電子湮沒技術（ pat ）和掃描電鏡（ sem ）進行了測試。 -
Application of boron - neutron lifetime logging in certain oilfield in western china
硼中子壽命測井在西部某油田的應用
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