1 meV = 8.065 cm-1 1 Kcal/mol= 0.0434 eV = 43.4 meV。
MeV*cm2 D MeV*cm-1 E MeV*cm-2 68. 不影响胶片灵敏度的因素包括 A 射线能量 B 射线入射角度 C 照射剂量 D 洗片条件温度和药液浓度 E 照射剂量率 69. 光子与物质相互作用截面指的是 A 光子与物质相互作用强度 B 光子与物质相互作用因果关系 ...
Phosphorus ions at energies of 0.5 and 1 MeV and at a dose of 2 脳 10 13 at./cm 2 were implanted into (100), (110) and (111) Si single crystals and into 2 渭m thick amorphous Si layers. Different tilt and twist angles were used during implanting, in a random configuration, or ...
These detectors were made directional for low energy 纬 rays by a lead occulting disk, 18 cm in diameter and 10 cm thick, placed 50 cm above the crystals, the axis of the whole assembly being pointed so as to track a celestial source continuously. The occulting disk alternated between ...
Arsenic ions are implanted in p-type (100) Si at 40 keV to a dose of 1 脳 10 16/ cm 2 at room temperature. The backscattering data clearly show that the total number of As atoms implanted in Si is decreased after annealing above 900掳C if annealing is carried out in an oxygen-...
百度试题 结果1 题目电子束的有效治疗深度(cm)与电子束能量(MeV)的比值约为 A. 1~1/2 B. 1/2~1/3 C. 1/3~1/4 D. 1/4~1/5 E. 1/5~1/6 相关知识点: 试题来源: 解析 C 反馈 收藏
(1992). "Search in s Channel for Produc- tion of 1-2 MeV/c2 Long-Lived e+e- Resonances". Physical Review... SD Henderson,P Asokakumar,JS Greenberg,... - 《Physical Review Letters》 被引量: 18发表: 1992年 Comment on "Search in s channel for production of 1-2 MeV/c2 long-lived...
百度试题 结果1 题目高能电子线的模体表面的平均能量的单位是( ) A. MeV B. J C. cm ˉ1 D. MeVcm ˉ1 E. Sv 相关知识点: 试题来源: 解析 A.MeV
不同能量的电子束,有效治疗深度(cm)为电子束能量MeV的 A、2009-1-2 B、1/3～1/4 C、1/5～1/6 D、1/7～1/8 E、1/10～1/11该题目是单项选择题,请记得只要选择1个答案!正确答案 点击免费查看答案 试题上传试题纠错TAGS不同能量电子束有效治疗医治深度cm 关键词试题汇总大全...
下同能量的电子束,有效治疗深度(cm)约为电子束能量(MeV)的多少()。 A 1/3～1/2 B 1/3～2/3 C 1/3～1/4 D 1/4～2/3 E 1/5～1/4 该题目是单项选择题,请记得只要选择1个答案!正确答案 查看正确答案会员号登录 试题上传 试题纠错 题目解答分析 本题更多的答案内容 请查看上面的正确答案 TAG...