Pulsed Neutron Scattering |
From inside the book
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Page 98
... moderator was a simple slab of polyethylene , whereas now it can be a rather complex assembly of many materials . Either way , it works by providing a medium in which the neutrons can undergo collisions until their energy is ...
... moderator was a simple slab of polyethylene , whereas now it can be a rather complex assembly of many materials . Either way , it works by providing a medium in which the neutrons can undergo collisions until their energy is ...
Page 119
... moderator . ( i ) In the slab moderator the solid angle subtended by the moderator surface at the target is large . ( ii ) The wing geometry prevents the target being ' seen ' by the beam tube . Moderator geometries ? .95 The two ...
... moderator . ( i ) In the slab moderator the solid angle subtended by the moderator surface at the target is large . ( ii ) The wing geometry prevents the target being ' seen ' by the beam tube . Moderator geometries ? .95 The two ...
Page 124
... slab or wing geometry . Only the absolute brightness depends on the geometry . It is proportional to the sum of direct and reflected neutrons entering the moderator , and will be considered later . The optimum thickness for epithermal ...
... slab or wing geometry . Only the absolute brightness depends on the geometry . It is proportional to the sum of direct and reflected neutrons entering the moderator , and will be considered later . The optimum thickness for epithermal ...
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 |