Pulsed Neutron Scattering |
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Page 106
... collimation is Wm = ama max = W m Lo = ༤1 ° which may well be too coarse . For a specified horizontal collimation α 。< ɑmax , but an unrestricted vertical collimation Bo Hm / Lo , the intensity at the sample is given by n1 ( λ ) ...
... collimation is Wm = ama max = W m Lo = ༤1 ° which may well be too coarse . For a specified horizontal collimation α 。< ɑmax , but an unrestricted vertical collimation Bo Hm / Lo , the intensity at the sample is given by n1 ( λ ) ...
Page 159
... collimation , say α , is poor . The optimum is then M = 2 with half the possible ημ intensity . The vertical collimation tends to be dominated by the ' in pile ' collimation ẞo . For a 100 mm source block 5 m inside the shield , this is ...
... collimation , say α , is poor . The optimum is then M = 2 with half the possible ημ intensity . The vertical collimation tends to be dominated by the ' in pile ' collimation ẞo . For a 100 mm source block 5 m inside the shield , this is ...
Page 174
... absorber . This gives rise to a precise definition to the pulse . Its limitation is that it requires a collimated beam . If the collimation is a radians , and the rotor frequency is f , the 174 Pulsed neutron scattering.
... absorber . This gives rise to a precise definition to the pulse . Its limitation is that it requires a collimated beam . If the collimation is a radians , and the rotor frequency is f , the 174 Pulsed neutron scattering.
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 |