Pulsed Neutron Scattering |
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Page 288
... incoherent scattering , is quite different . It depends on the wavelength interval Sλ = ( h / mL ) & t corresponding to a time channel St. It also depends on the counter solid angle △ N = 2π sin 20 A20ƒ do I ( dt ) = n1 ( ¿ ) 82 N ̧ ΔΩ ...
... incoherent scattering , is quite different . It depends on the wavelength interval Sλ = ( h / mL ) & t corresponding to a time channel St. It also depends on the counter solid angle △ N = 2π sin 20 A20ƒ do I ( dt ) = n1 ( ¿ ) 82 N ̧ ΔΩ ...
Page 403
... scattering . Magnetic cross - sections are less well- defined . They depend on the ionic state of an element and hardly at all on the isotope , and can only be precisely defined for a given ion in a given environment . Incoherent scattering ...
... scattering . Magnetic cross - sections are less well- defined . They depend on the ionic state of an element and hardly at all on the isotope , and can only be precisely defined for a given ion in a given environment . Incoherent scattering ...
Page 404
Colin G. Windsor. DR R Figure A1 . Coherent and incoherent scattering . Assume an element with 75 % isotope A , scattering length b , and 25 % B of length b . The mean length <br> gives the coherent scattering , while the RMS deviation ...
Colin G. Windsor. DR R Figure A1 . Coherent and incoherent scattering . Assume an element with 75 % isotope A , scattering length b , and 25 % B of length b . The mean length <br> gives the coherent scattering , while the RMS deviation ...
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 |