Pulsed Neutron Scattering |
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Page 140
... calculations into the thermal region . Up - scattering becomes as important as down - scattering . Neutron cross ... calculated distribution ( full line ) the wing moderator has a delayed leading edge and enhanced tail96 . The time ...
... calculations into the thermal region . Up - scattering becomes as important as down - scattering . Neutron cross ... calculated distribution ( full line ) the wing moderator has a delayed leading edge and enhanced tail96 . The time ...
Page 277
... calculation is complicated and requires numerical com- putations 167. However , the calculation may be done simply on the assumption that the scattering is isotropic and small , say less than 10 ° 168. The self- shielding A ,, is calculated ...
... calculation is complicated and requires numerical com- putations 167. However , the calculation may be done simply on the assumption that the scattering is isotropic and small , say less than 10 ° 168. The self- shielding A ,, is calculated ...
Page 290
... calculated structure factors Feale ( 7 ) . The routines minimize the sum of squares of differences calc x2 = Σ w ( t ) ( Fobs ( 7 ) | – | Fcalc ( T ) | ) 2 . τ This is done by evaluating the differentials dy2 / dx , with respect to the ...
... calculated structure factors Feale ( 7 ) . The routines minimize the sum of squares of differences calc x2 = Σ w ( t ) ( Fobs ( 7 ) | – | Fcalc ( T ) | ) 2 . τ This is done by evaluating the differentials dy2 / dx , with respect to the ...
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 |