Pulsed Neutron Scattering |
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Page 18
... unit cell When the repeat unit of the lattice contains only one atom it is called a ' primitive ' lattice . More often , the repeat unit contains several atoms , perhaps thousands of them . Unit cells are the smallest units into which ...
... unit cell When the repeat unit of the lattice contains only one atom it is called a ' primitive ' lattice . More often , the repeat unit contains several atoms , perhaps thousands of them . Unit cells are the smallest units into which ...
Page 19
... unit area , so the intensity of each peak is seen to be modulated by a structure factor depending on the scattering centre positions within the unit cell . In a powder spectrum each reflection at a given wavelength and scattering angle ...
... unit area , so the intensity of each peak is seen to be modulated by a structure factor depending on the scattering centre positions within the unit cell . In a powder spectrum each reflection at a given wavelength and scattering angle ...
Page 414
... unit area per unit wavelength m - 2s Alternative unit × factor Å - 1 × 10 Å ÷ 10 -1 A 1 × 10 Α - 1 Å 1 × 10 n ( 2 ) nm S × 103 cm $ ( E ) neutron flux per steradian st - 1s - 1ev - 1 per unit energy b scattering length 10 - 15 5 m 10-12 ...
... unit area per unit wavelength m - 2s Alternative unit × factor Å - 1 × 10 Å ÷ 10 -1 A 1 × 10 Α - 1 Å 1 × 10 n ( 2 ) nm S × 103 cm $ ( E ) neutron flux per steradian st - 1s - 1ev - 1 per unit energy b scattering length 10 - 15 5 m 10-12 ...
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 |