Pulsed Neutron Scattering |
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Page 130
... absorber dissolved in the moderator material . the range of ambient neutron energies can be obtained by removing the Maxwellian with a neutron absorber or poison . There are two types of poisoned moderator , as illustrated in figure ...
... absorber dissolved in the moderator material . the range of ambient neutron energies can be obtained by removing the Maxwellian with a neutron absorber or poison . There are two types of poisoned moderator , as illustrated in figure ...
Page 182
... absorber thickness , an epithermal neutron absorber of thickness z = 0 · 5 mm and a fast neutron absorber of thickness z = 2.5 mm . The right - hand curves show the corresponding curves for a moderator of optimized width . For our ...
... absorber thickness , an epithermal neutron absorber of thickness z = 0 · 5 mm and a fast neutron absorber of thickness z = 2.5 mm . The right - hand curves show the corresponding curves for a moderator of optimized width . For our ...
Page 210
... absorber to give comparable efficiencies within a few millimetres thickness . A typical absorber is " Li . The reaction products are detected by a special crystal ' phosphor ' such as ZnS ( Ag ) . This is often mixed with the absorber ...
... absorber to give comparable efficiencies within a few millimetres thickness . A typical absorber is " Li . The reaction products are detected by a special crystal ' phosphor ' such as ZnS ( Ag ) . This is often mixed with the absorber ...
Common terms and phrases
absorption accelerator atoms background beam tube beryllium Bragg reflection calculated cell collimation count-rate counter bank cross-section crystal monochromator curve defined density depends detector diffraction diffractometer direct geometry distribution dose E₁ effective efficiency elastic electron linac energy transfer epithermal equation fast neutrons figure of merit fission function given gives Harwell hydrogen incident beam incident energy incident flight path incident neutron intensity k₁ L₁ linac magnetic Maxwellian measured neutron beam neutron scattering neutron source nuclear nuclei phonon polarization proton pulse width pulsed neutron pulsed reactor pulsed source Q values Qmax radiation range ratio reciprocal lattice reciprocal space reflector resolution element resonance rotor sample scattered flight path scattering angle scattering length scattering vector Section shielding shown in figure shows single crystal slit solid angle spallation spectrometer spectrum spin target thermal thickness time-of-flight transmission typical vanadium velocity vibrational wave-vector wavelength y-rays Δι ΦΩ
References to this book
Polymers and Neutron Scattering Julia S. Higgins,Henri C. Benoît,Henri Benoît No preview available - 1996 |