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Gama 能谱仪实验

Gama 能谱仪实验. —— 近代物理实验课程期末报告 赵 猛 083001900 陈迪 08300190013 2012.6. Outline. 原理 内容. 原理. γ 射线 与物质三种效应 —— 光电效应 —— 康普顿散射 —— 电子对效应 γ 能谱仪探头. 内容. 定标. 137 Cs 源测量. 高压 & 全能峰. 质量吸收系数 I / I 0 = e - με n ln I = - με n + ln I 0 ln I = A.n + B

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Gama 能谱仪实验

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  1. Gama能谱仪实验 —— 近代物理实验课程期末报告 赵猛 083001900 陈迪 08300190013 2012.6

  2. Outline • 原理 • 内容

  3. 原理 • γ射线 与物质三种效应——光电效应——康普顿散射——电子对效应 • γ能谱仪探头

  4. 内容 • 定标

  5. 137Cs源测量

  6. 高压&全能峰

  7. 质量吸收系数 • I / I0 = e-μεn • lnI = -μεn + ln I0 • lnI = A.n + B • μ= --A / ε

  8. 质量吸收系数（Pb2.83 g/cm2 ）

  9. Thanks to 实验中心的老师们长期的教诲与帮助 赵猛 083001900 陈迪 08300190013

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