Atomic Fingerpri
The Atomic Fingerprint: Neutron Activation Analysis
作者：Keisch, Bernard, 1932-
体例：题 章数：46
字数：57,993 来源：Project Gutenberg
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- 分章依据
- 按「题」标记切分为 46 题（Gutenberg 卷册标记）。
- 篇幅分布
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- 原文溯源
cache/epub/48406/pg48406.txt（Project Gutenberg）
章节目录
共 46 题- CONTENTS
- INTRODUCTION
- OR
- OR
- OR
- OR
- WHAT IS NEUTRON ACTIVATION ANALYSIS?
- N₂₄ = N₂₃φσt
- 2. Remove them and measure the radioactivity produced from the sample.
- Neutron Activation Analysis: Detecting Sodium in a Sample of Plastic
- THE SENSITIVITY[3] OF NEUTRON ACTIVATION ANALYSIS
- 1. How do we measure how many radioactive atoms are present?
- A₀ = Nφσ (1 - e^{-λt})
- A_{t} = A₀e^{-λt}
- HOW AND WHERE TO USE IT
- In a Physics Laboratory
- In a Hospital
- In a Plastics Plant
- In a Museum
- 1. Finds the 0.411-MeV gamma-ray peak for gold-198.
- 2. Determines the total counts in the peak.
- 3. Repeats the process for the corresponding wire standard.
- 8. Tabulates and prints the ratios found in Step 7.
- In a Criminology Laboratory
- SUMMING UP: WHAT LIES AHEAD
- 1. In the microscopic world of biology and medicine;
- 2. For meteorites arriving from the vast reaches of space;
- 3. In the production lines of consumer products;
- 4. For precious samples of moon rocks;
- APPENDIX
- A₀ = Nφσ (1 - e^{-λt})
- A₁ = (R)/(E × F) e^{λt}
- 3. Calculation of arsenic concentration in the sample.
- Concentration in parts per million = (A₁)/(A₀ × W) 10⁶
- Therefore the concentration is
- FOOTNOTES
- READING LIST
- General Information About Nuclear Science
- About Activation Analysis
- Popular Level
- Technical Level
- Bibliographies
- MOTION PICTURES
- The Author
- Transcriber’s Notes
- End of Project Gutenberg's The Atomic Fingerprint, by Bernard Keisch