Subject Index

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Subject Index

Alpha of Pu

2 3 9

_{, 23}

of U

2 3 3

_{, 9, 10}

of U

2 3 5

_{, 14, 16}

Bailly du Bois expression for scattering eigenvalues, 188

Capture cross section data, 79-83 detectors, 77-83

Capture y-ray spectra, 87-89, 113, 119- 123

Cold neutron facility, 48-51

Columbia University synchrocyclotron slow neutron velocity spectrometer, 93-98

Cross section compilation and review, 124-128

Decay constants

boron removal method, 204

calculation from experimental data, 203-204

experimental method for multiplying media, 196-201

in polyethylene, 202

values for certain multiplying as- semblies, 206, 211-213

for water, 222-225 Dieaway experiments

exponential periods, 188-189 modal analysis, 222

Dispersion curves for crystals by neutron scattering, 134-139

Eta

of P u

2 8 9

, 23-24, 28-30 of U

2 3 3

, 8, 9, 10, 18-20 of U

2 3 5

, 13, 16, 18-20, 111-113 Fast chopper

MTR, 35, 42 Oak Ridge, 64-69, 77 sample changer, 45-46

Fusion process efficiency, 290, 295

magnetic mirror experiments, 291-294 neutron yield, 294

use of superconducting coils, 295 Gold cross section, 63

Inelastic scattering of slow neutrons, 54- 61

Lifetimes of phonons from neutron widths 139-140

Linear accelerator facilities General Atomic, 216-221 Harwell, 109, 110 RPI, 263-288

Liquid correlation functions from neutron energy and angular distributions, 140-144

L u

1 7 5

total cross section, 72, 76 Materials Testing Reactor, 35-36 Motion of atoms in a liquid

jump-diffusion model, 146, 148 stochastic model, 154, 155

Neutron diffusion parameters, 172-175 Neutron scattering in liquids

coherent correction, 153 energy spectra, 145, 148, 154 incoherent cross section, 146, 148-

153, 157, 158

quasi-elastic peak, 147, 148, 158, 159 Neutron spectra

asymptotic space and time variational calculation, 168-175

control rod indication of change, 205- 208

in graphite, 235-241, 257-260 Harwell results, 256-261

infinite media spectra, 176-179, 225- 229

in multiplying media, 178-185, 241- 244, 257-259

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303 SUBJECT INDEX perturbation calculation, 190

in poisoned solutions, 225-229, 253- 255, 257

reactor space-energy flux distribution, 179-184

spatial dependence, 229-235 temperature dependence, 235-239 time dependence analysis, 208-211 time dependent measurements, 191,

205-210, 240, 241, 251-252 N p

2 3 7

total cross section, 72-74 Nu

of Pu

2 3 9

, 23-24, 27-30 of U

2 3 3

, 8, 18-20 of U

2 3 5

, 13, 17, 18-20

Phased-chopper velocity selector 54, 61 Pu

2 3 9

, see also Alpha, Eta, Nu

absorption cross section, 20-21 determination of parameters, 20 fission cross section, 22 P u

2 4 1

cross sections, 3-45

Radioactive isotopes suitable for cross section measurements, 46

Rensselaer Polytechnic Institute, 1 Scattering cross sections, 49-51, 83-84,

129, 133, 146-153, 157-159 Scattering law, 56-61

Scattering matrix, 191-193

Scattering process for neutrons in crystals, 130-134

Slow chopper, 51

Spectrum measurements, energy resolu- tion, 249-252

Thermal cross section systematics, 47-48 Total cross section measurements with

high resolution Columbia system, 98-106

Tungsten total cross section, 72, 75, 84 U

2 3 3

, see also Alpha, Eta, Nu

absorption cross section, 5-7 determination of parameters, 5-8, 38-

40

fission cross section, 7-8, 40-41 total cross section, 5, 69-72

2200-meter/sec parameters, 3, 8-10, 17-20.

U

2 3 5

, see also Alpha, Eta, Nu absorption cross section, 10-11 determination of parameters, 10 fission cross section 11-13, 118 2200-meter/sec parameters, 3, 13-20 Van Hove formalism, 146

Variational method, 163-166

Velocity correlation function, 149, 155