Pulsed Neutron Scattering |
From inside the book
Results 1-3 of 83
Page 39
... given to the neutron , hw < 0 , we speak of ' energy gain ' or ' up ' scattering . For a given value of Q and @ the energy gain and loss cross - sections are related . We can see this by exchanging E , and E , in equation ( 1.35 ) ...
... given to the neutron , hw < 0 , we speak of ' energy gain ' or ' up ' scattering . For a given value of Q and @ the energy gain and loss cross - sections are related . We can see this by exchanging E , and E , in equation ( 1.35 ) ...
Page 46
... given ( Q , w ) . Triangles of a given & must lie on the circle with chord Q = AB . Applying the sine formula to the triangle ABD gives the circle radius R = Q / 2 sin & . Applying the cosine formula to triangle ABC shows that EF = mw ...
... given ( Q , w ) . Triangles of a given & must lie on the circle with chord Q = AB . Applying the sine formula to the triangle ABD gives the circle radius R = Q / 2 sin & . Applying the cosine formula to triangle ABC shows that EF = mw ...
Page 295
... given Q , the orientation of t takes all values . We may equally let the orientation of Q take all values . The actual Q value when inelastic scattering is allowed is given by = τ h2 2m - ( k2 − k } ) = ɛc \ q \ ; Q = r + q = k 。− k ...
... given Q , the orientation of t takes all values . We may equally let the orientation of Q take all values . The actual Q value when inelastic scattering is allowed is given by = τ h2 2m - ( k2 − k } ) = ɛc \ q \ ; Q = r + q = k 。− k ...
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 |