Pulsed Neutron Scattering |
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Page 269
... sample positions with respect to the umbra and penumbra are shown in figure 7.3 . ( i ) Ideally , the sample should lie entirely within the umbra . Weighing then gives the number of scattering units in the beam directly . ( ii ) Less ...
... sample positions with respect to the umbra and penumbra are shown in figure 7.3 . ( i ) Ideally , the sample should lie entirely within the umbra . Weighing then gives the number of scattering units in the beam directly . ( ii ) Less ...
Page 272
... sample changer , which automatically exchanges the samples , together with the can , vanadium and background ... sample changer also saves manpower , since several ' runs ' are compressed into one . The main cost is in the extra computer ...
... sample changer , which automatically exchanges the samples , together with the can , vanadium and background ... sample changer also saves manpower , since several ' runs ' are compressed into one . The main cost is in the extra computer ...
Page 380
... sample which is highly radioactive from an external irradiation , or because it is composed of unstable isotopes , may be placed there quite safely . The sample is remote from the detectors , so y - ray and fast neutron emissions are ...
... sample which is highly radioactive from an external irradiation , or because it is composed of unstable isotopes , may be placed there quite safely . The sample is remote from the detectors , so y - ray and fast neutron emissions are ...
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 |