Preface |
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xi | |
Acknowledgments |
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xiii | |
Authors |
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xv | |
1 Basic Radiation Physics Concepts and Units of Measurement |
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1 | (24) |
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1 | (1) |
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1.2 Units of Measure and Physical Quantities |
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1 | (2) |
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1.3 Radiological Standards |
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3 | (1) |
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1.4 Units of Measure for Radiological Quantities |
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3 | (7) |
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1.4.1 Synopsis of the 1973 Radiation Protection System |
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4 | (1) |
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1.4.2 Synopsis of the 1990 Radiation Protection System |
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5 | (1) |
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1.4.3 Values of Radiation Protection Quantities |
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6 | (4) |
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1.5 Physical Constants and Atomic and Nuclear Properties |
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10 | (1) |
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1.6 Summary of Relativistic Relationships |
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11 | (3) |
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1.7 Energy Loss by Ionization |
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14 | (7) |
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1.8 Multiple Coulomb Scattering |
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21 | (2) |
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23 | (2) |
2 General Considerations for Accelerator Radiation Fields |
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25 | (18) |
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25 | (1) |
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2.2 Primary Radiation Fields at Accelerators: General Considerations |
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25 | (2) |
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2.3 Theory of Radiation Transport |
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27 | (3) |
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2.3.1 General Considerations of Radiation Transport |
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27 | (2) |
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2.3.2 The Boltzmann Equation |
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29 | (1) |
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2.4 The Monte Carlo Method |
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30 | (4) |
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2.4.1 General Principles of the Monte Carlo Technique |
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30 | (2) |
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2.4.2 Monte Carlo Example: A Sinusoidal Angular Distribution of Beam Particles |
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32 | (2) |
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2.5 Review of Magnetic Deflection and Focusing of Charged Particles |
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34 | (8) |
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2.5.1 Magnetic Deflection of Charged Particles |
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34 | (2) |
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2.5.2 Magnetic Focusing of Charged Particles |
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36 | (6) |
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42 | (1) |
3 Prompt Radiation Fields due to Electrons |
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43 | (38) |
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43 | (1) |
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3.2 Unshielded Radiation Produced by Electron Beams |
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43 | (11) |
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3.2.1 Dose Rate in a Direct Beam of Electrons |
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43 | (1) |
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44 | (5) |
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49 | (3) |
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3.2.3.1 Giant Photonuclear Resonance Neutrons |
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49 | (2) |
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3.2.3.2 Quasi-Deuteron Neutrons |
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51 | (1) |
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3.2.3.3 High-Energy Particles |
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52 | (1) |
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3.2.3.4 Production of Thermal Neutrons |
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52 | (1) |
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52 | (2) |
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3.2.5 Summary of Unshielded Radiation Produced by Electron Beams |
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54 | (1) |
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3.3 Electromagnetic Cascade: Introduction |
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54 | (3) |
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3.4 Electromagnetic Cascade Process |
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57 | (5) |
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3.4.1 Longitudinal Shower Development |
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58 | (3) |
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3.4.2 Lateral Shower Development |
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61 | (1) |
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3.5 Shielding of Hadrons Produced by Electromagnetic Cascade |
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62 | (2) |
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62 | (2) |
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3.5.2 High-Energy Particles |
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64 | (1) |
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3.6 Synchrotron Radiation |
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64 | (15) |
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3.6.1 General Discussion of the Phenomenon |
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65 | (3) |
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68 | (3) |
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3.6.3 Radiation Protection Issues Specific to Synchrotron Radiation Facilities |
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71 | (10) |
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71 | (2) |
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3.6.3.2 Gas Bremsstrahlung: Straight Ahead |
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73 | (1) |
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3.6.3.3 Gas Bremsstrahlung: Secondary Photons |
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74 | (2) |
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3.6.3.4 Gas Bremsstrahlung: Neutron Production Rates |
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76 | (1) |
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3.6.3.5 Importance of Ray Tracing |
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77 | (2) |
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79 | (2) |
4 Prompt Radiation Fields due to Protons and Ions |
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81 | (42) |
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81 | (1) |
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4.2 Radiation Production by Proton Beams |
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81 | (9) |
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4.2.1 The Direct Beam: Radiation Hazards and Nuclear Interactions |
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81 | (1) |
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4.2.2 Neutrons and Other Hadrons at High Energies |
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82 | (4) |
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82 | (1) |
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83 | (1) |
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4.2.2.3 200 MeV E0 1.0 GeV: "Intermediate" Energy |
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83 | (2) |
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4.2.2.4 E0 1.0 GeV: "High"-Energy Region |
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85 | (1) |
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4.2.3 Sullivan&;s Formula |
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86 | (2) |
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88 | (2) |
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4.3 Primary Radiation Fields at Ion Accelerators |
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90 | (6) |
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4.3.1 Light Ions (Ion Mass Number A 5) |
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90 | (2) |
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4.3.2 Heavy Ions (Ions with A 4) |
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92 | (4) |
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4.4 Hadron (Neutron) Shielding for Low-Energy Incident Protons (E0 15 MeV) |
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96 | (2) |
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4.5 Limiting Attenuation at High Energy |
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98 | (2) |
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4.6 Intermediate- and High-Energy Shielding: Hadronic Cascade |
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100 | (10) |
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4.6.1 Hadronic Cascade from a Conceptual Standpoint |
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100 | (1) |
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4.6.2 Simple One-Dimensional Cascade Model |
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101 | (2) |
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4.6.3 Semiempirical Method: Moyer Model for a Point Source |
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103 | (5) |
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4.6.4 Moyer Model for a Line Source |
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108 | (2) |
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4.7 Use of Monte Carlo Shielding Codes for Hadronic Cascades |
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110 | (10) |
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4.7.1 Examples of Results of Monte Carlo Calculations |
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110 | (1) |
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4.7.2 General Comments on Monte Carlo Star-to-Dose Conversions |
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111 | (2) |
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4.7.3 Shielding against Muons at Proton Accelerators |
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113 | (7) |
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120 | (3) |
5 Unique Low-Energy Prompt Radiation Phenomena |
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123 | (26) |
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123 | (1) |
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5.2 Transmission of Photons and Neutrons through Penetrations |
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123 | (15) |
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5.2.1 Albedo Coefficients |
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123 | (4) |
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5.2.1.1 Usage of Photon Albedo Coefficients |
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126 | (1) |
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5.2.2 Neutron Attenuation in Labyrinths: General Considerations |
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127 | (1) |
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5.2.3 Attenuation in the First Legs of Straight Penetrations |
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127 | (4) |
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5.2.4 Attenuation in Second and Successive Legs of Straight Penetrations |
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131 | (3) |
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5.2.5 Attenuation in Curved Tunnels |
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134 | (1) |
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5.2.6 Attenuation beyond the Exit |
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135 | (2) |
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5.2.7 Determination of the Source Factor |
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137 | (1) |
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138 | (8) |
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5.3.1 Simple Parameterizations of Neutron Skyshine |
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138 | (2) |
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5.3.2 A More Rigorous Treatment |
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140 | (4) |
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5.3.3 Examples of Experimental Verifications |
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144 | (2) |
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146 | (3) |
6 Shielding Materials and Neutron Energy Spectra |
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149 | (20) |
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149 | (1) |
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6.2 Discussion of Shielding Materials Commonly Used at Accelerators |
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149 | (5) |
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149 | (2) |
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151 | (1) |
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6.2.3 Other Hydrogenous Materials |
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151 | (1) |
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6.2.3.1 Polyethylene and Other Materials That Can Be Borated |
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151 | (1) |
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6.2.3.2 Water, Wood, and Paraffin |
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152 | (1) |
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152 | (1) |
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6.2.5 High Atomic Number Materials: Lead, Tungsten, and Uranium |
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153 | (1) |
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6.2.6 Miscellaneous Materials: Beryllium, Aluminum, and Zirconium |
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154 | (1) |
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6.3 Neutron Energy Spectra outside of Shields |
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154 | (15) |
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6.3.1 General Considerations |
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154 | (1) |
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6.3.2 Examples of Neutron Spectra due to Incident Electrons |
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155 | (1) |
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6.3.3 Examples of Neutron Spectra due to Low- and Intermediate- Energy Protons |
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155 | (3) |
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6.3.4 Examples of Neutron Spectra due to High-Energy Protons |
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158 | (2) |
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6.3.5 Leakage of Low-Energy Neutrons through Iron Shielding |
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160 | (5) |
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6.3.6 Neutron Spectra due to Ions |
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165 | (2) |
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6.3.7 Neutron Fluence and Dosimetry |
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167 | (2) |
7 Induced Radioactivity in Accelerator Components |
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169 | (30) |
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169 | (1) |
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7.2 Fundamental Principles of Induced Radioactivity |
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169 | (2) |
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7.3 Activation of Components at Electron Accelerators |
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171 | (6) |
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171 | (1) |
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7.3.2 Results for Electrons at Low Energies |
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172 | (2) |
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7.3.3 Results for Electrons at High Energies |
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174 | (3) |
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7.4 Activation of Components at Proton and Ion Accelerators |
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177 | (21) |
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177 | (4) |
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7.4.2 Methods of Systematizing Activation due to High-Energy Hadrons |
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181 | (14) |
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7.4.2.1 Gollon's Rules of Thumb |
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188 | (1) |
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7.4.2.2 Barbier Danger Parameter |
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189 | (6) |
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7.4.3 Uniform Irradiation of Walls of an Accelerator Enclosure |
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195 | (3) |
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198 | (1) |
8 Induced Radioactivity in Environmental Media |
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199 | (30) |
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199 | (1) |
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8.2 Airborne Radioactivity |
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199 | (15) |
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199 | (3) |
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8.2.2 Accounting for Ventilation |
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202 | (1) |
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8.2.3 Propagation of Airborne Radionuclides in the Environment |
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203 | (5) |
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8.2.3.1 Meteorological Considerations |
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203 | (5) |
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8.2.4 Radiation Protection Standards for Airborne Radioactivity |
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208 | (4) |
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8.2.4.1 Radiation Protection Standards for Occupational Workers |
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208 | (1) |
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8.2.4.2 Radiation Protection Standards for Members of the Public |
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209 | (1) |
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8.2.4.3 Example Numerical Values of the Derived Air Concentrations and Derived Concentration Standards |
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209 | (3) |
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8.2.4.4 Mixtures of Radionuclides |
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212 | (1) |
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8.2.5 Production of Airborne Radionuclides at Electron Accelerators |
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212 | (1) |
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8.2.6 Production of Airborne Radionuclides at Proton Accelerators |
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213 | (1) |
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8.3 Water and Geological Media Activation |
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214 | (13) |
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8.3.1 Water Activation at Electron Accelerators |
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215 | (1) |
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8.3.2 Water and Geological Media Activation at Proton Accelerators |
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216 | (4) |
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8.3.2.1 Water Activation at Proton Accelerators |
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216 | (1) |
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8.3.2.2 Geological Media Activation |
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216 | (4) |
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8.3.3 Regulatory Standards |
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220 | (1) |
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8.3.4 Propagation of Radionuclides through Geological Media |
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221 | (10) |
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8.3.4.1 General Considerations |
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221 | (1) |
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8.3.4.2 Simple Single Resident Model |
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222 | (1) |
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8.3.4.3 Concentration Model |
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222 | (3) |
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8.3.4.4 Example of Application: Jackson Model |
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225 | (2) |
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227 | (2) |
9 Radiation Protection Instrumentation at Accelerators |
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229 | (40) |
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229 | (1) |
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229 | (2) |
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9.3 Special Considerations for Accelerator Environments |
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231 | (2) |
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9.3.1 Large Range of Flux Densities, Absorbed Dose Rates, etc |
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231 | (1) |
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9.3.2 Possible Large Instantaneous Values of Flux Densities, Absorbed Dose Rates, etc |
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232 | (1) |
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9.3.3 Large Energy Domain of Neutron Radiation Fields |
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232 | (1) |
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9.3.4 Presence of Mixed Radiation Fields |
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232 | (1) |
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9.3.5 Directional Sensitivity |
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232 | (1) |
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9.3.6 Sensitivity to Features of Accelerator Environment Other than Ionizing Radiation |
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232 | (1) |
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9.4 Standard Instruments and Dosimeters |
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233 | (7) |
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9.4.1 Ionization Chambers |
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233 | (5) |
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9.4.2 Geiger-Muller Detectors |
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238 | (1) |
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9.4.3 Thermoluminescent Dosimeters |
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238 | (1) |
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9.4.4 Optically Stimulated Luminescence Dosimeters |
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239 | (1) |
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9.4.5 Nuclear Track Emulsions |
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239 | (1) |
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9.4.6 Track Etch Dosimeter |
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239 | (1) |
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239 | (1) |
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240 | (1) |
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9.5 Specialized Detectors |
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240 | (26) |
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9.5.1 Thermal Neutron Detectors |
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240 | (4) |
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241 | (2) |
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243 | (1) |
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243 | (1) |
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244 | (1) |
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244 | (1) |
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9.5.2 Moderated Neutron Detectors |
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244 | (11) |
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9.5.2.1 Spherical Moderators, Bonner Spheres, and Related Detectors |
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245 | (8) |
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253 | (2) |
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9.5.3 Activation Detectors |
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255 | (2) |
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9.5.4 Special Activation Detectors for Very High-Energy Neutrons |
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257 | (1) |
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9.5.5 Proton Recoil Counters |
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257 | (2) |
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9.5.6 Tissue Equivalent Proportional Chambers and Linear Energy Transfer Spectrometry |
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259 | (1) |
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9.5.7 Recombination Chamber Technique |
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259 | (4) |
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263 | (3) |
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266 | (3) |
Appendix: Synopses of Common Monte Carlo Codes and Examples for High-Energy Proton-Initiated Cascades |
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269 | (14) |
References |
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283 | (12) |
Index |
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295 | |