| Preface | 7 |
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| Contents | 9 |
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| Acronyms | 14 |
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| Introduction | 16 |
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| 1 Nuclear Proliferation | 16 |
| 2 The Threat of Nuclear Terrorism | 19 |
| 3 Interdiction of Nuclear Material | 20 |
| References | 21 |
| Nuclear Explosives | 23 |
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| 1 History | 23 |
| 1.1 The Dawn of the Atomic Age | 23 |
| 1.2 The Cold War and the Arms Race | 26 |
| 1.3 The Fall of the Soviet Union | 27 |
| 2 Device Physics | 28 |
| 2.1 Critical Mass | 28 |
| 2.2 Heat Generation. Neutron Background and Predetonation | 31 |
| 3 Special Nuclear Material | 33 |
| References | 34 |
| Signatures and Background | 36 |
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| 1 Simplified Transport Calculations | 36 |
| 1.1 Gamma Radiation Field from a Point Source | 37 |
| 1.2 Self-Shielded Disk | 38 |
| 1.3 Intermediate Optical Thickness | 41 |
| 1.4 Infinite Half-Space Source | 42 |
| 2 The Radiation Background | 43 |
| 2.1 The Primordial Isotopes | 43 |
| 2.2 Cosmogenic Nuclides | 49 |
| 2.3 The Compton Continuum and Pair Production | 49 |
| 2.4 Typical Background Spectra | 50 |
| 2.5 Man-Made Radioactivity | 51 |
| 2.6 Neutrons | 52 |
| 2.7 NORM and TENORM | 53 |
| 2.8 Medical Isotopes | 54 |
| 3 Problems | 55 |
| References | 56 |
| Detection Statistics | 57 |
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| 1 Classical and Bayesian Statistics | 57 |
| 2 Counting Statistics | 58 |
| 2.1 Energy Resolution Statistics | 58 |
| 2.2 More on Error Propagation Statistics | 64 |
| 3 Confusion Matrices | 66 |
| 4 Receiver Operating Characteristics | 71 |
| 5 Application of Bayesian Statistical Methods | 75 |
| 6 Pulse Shape Discrimination as an Example of Binary Classification | 78 |
| 7 Problems | 80 |
| References | 81 |
| The Nuclear Fuel Cycle | 82 |
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| 1 Mining and Chemical Processing of Uranium | 82 |
| 2 UF6 Conversion and Enrichment | 83 |
| 3 Post-reactor | 84 |
| 4 Conversion of Military Materials | 85 |
| 5 Waste Management | 86 |
| 6 Enrichment Technologies | 86 |
| 6.1 Gaseous Diffusion | 86 |
| 6.2 Centrifuge Separation | 89 |
| 6.3 Electromagnetic Separation | 96 |
| 6.4 Laser Isotope Separation | 99 |
| 7 Reactors and Proliferation | 101 |
| 8 Problems | 102 |
| References | 103 |
| Nuclear Forensics | 104 |
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| 1 Introduction | 104 |
| 2 Attribution Methods | 106 |
| 2.1 Chronometers | 106 |
| 2.2 Calculation of Initial Enrichment | 107 |
| 2.3 Other Nuclear Signatures | 109 |
| 2.4 Morphology and Structure | 110 |
| 3 Analysis Tools | 113 |
| 3.1 Radiation Detection Equipment | 113 |
| 3.2 Mass Spectrometry | 114 |
| 4 Problems | 115 |
| References | 115 |
| Nuclear Testing | 117 |
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| 1 Introduction and History | 117 |
| 2 The Comprehensive Test Ban Treaty and the International Monitoring System | 118 |
| 3 Radionuclide Monitoring | 119 |
| 3.1 Fission Product Distributions | 119 |
| 3.2 Xenon and Cesium Signatures | 121 |
| 3.3 Krypton Signatures | 123 |
| 3.4 Argon-37 | 123 |
| 3.5 Atmospheric Transport of Radionuclides | 124 |
| 3.6 Radionuclide Monitoring Technology | 125 |
| 4 Seismic Signals | 129 |
| 4.1 Seismic Wave Types | 129 |
| 4.2 Distance-to-Event Determination | 131 |
| 4.3 Seismic Signatures of Nuclear Explosive Tests | 132 |
| 4.4 Limitations of Seismic Monitoring | 134 |
| 5 Hydroacoustic Monitoring | 136 |
| 6 Infrasonic Signatures | 138 |
| 6.1 Waves in the Atmosphere | 139 |
| 6.2 Infrasound Signatures for Atmospheric Nuclear Testing | 142 |
| 6.3 Instruments for Infrasonic Detection | 145 |
| 7 Concluding Remarks | 146 |
| 8 Problems | 146 |
| References | 148 |
| Active Interrogation | 151 |
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| 1 Introduction | 151 |
| 2 Neutron Active Interrogation | 152 |
| 2.1 Differential Die-Away Analysis | 152 |
| 2.2 Delayed Neutrons | 154 |
| 2.3 Delayed Gammas from Fission Products | 155 |
| 2.4 Neutron Transport | 157 |
| 3 Photofission | 162 |
| 4 Nuclear Resonance Fluorescence | 163 |
| 4.1 NRF Physics | 163 |
| 4.2 Ph
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