Pulsed Neutron Scattering |
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Page 165
Colin G. Windsor. Useful resolution elements A reactor monochromator picks out only one incident wavelength at a time ... element in wavelength . If this equals the monochromator resolution , we can properly compare the flux on the sample ...
Colin G. Windsor. Useful resolution elements A reactor monochromator picks out only one incident wavelength at a time ... element in wavelength . If this equals the monochromator resolution , we can properly compare the flux on the sample ...
Page 166
... resolution element is n2 ( 2 ) ^ 2 = m m2 Am C R3 4πh2 В2 n ; n2 ( E ) AE = mC ' R3 B'2 n The resolution under these conditions is R = ^^ λ = ( 4.11 ) 12 n h B ; R = m Lo ΔΕ E 2 1/2 B ' 1/2 = n ( 4.12 ) m Lo Thus , in the epithermal ...
... resolution element is n2 ( 2 ) ^ 2 = m m2 Am C R3 4πh2 В2 n ; n2 ( E ) AE = mC ' R3 B'2 n The resolution under these conditions is R = ^^ λ = ( 4.11 ) 12 n h B ; R = m Lo ΔΕ E 2 1/2 B ' 1/2 = n ( 4.12 ) m Lo Thus , in the epithermal ...
Page 172
Colin G. Windsor. Table 4.1 . Number of useful resolution elements . Experiment NR Diffraction from amorphous solids ... element per counter is used to form the scan . Many counters will correspond to unsuitable energies , so that perhaps ...
Colin G. Windsor. Table 4.1 . Number of useful resolution elements . Experiment NR Diffraction from amorphous solids ... element per counter is used to form the scan . Many counters will correspond to unsuitable energies , so that perhaps ...
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 |