Pulsed Neutron Scattering |
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Page 16
... lattice but in Q space or reciprocal space . Every Bragg reflection can be described by a point . This is a reciprocal lattice point often denoted by the vector t . If all the Bragg reflections are plotted in this way they form a new ...
... lattice but in Q space or reciprocal space . Every Bragg reflection can be described by a point . This is a reciprocal lattice point often denoted by the vector t . If all the Bragg reflections are plotted in this way they form a new ...
Page 17
... space lattice ( i ) generates a reciprocal lattice ( ii ) . Each set of d spacings in the lattice is used to construct a vector ▾ from the origin of reciprocal space . | t | = 2π / d while the direction of is along the perpendicular to ...
... space lattice ( i ) generates a reciprocal lattice ( ii ) . Each set of d spacings in the lattice is used to construct a vector ▾ from the origin of reciprocal space . | t | = 2π / d while the direction of is along the perpendicular to ...
Page 348
... reciprocal space in one run . Figure 9.17 shows the scans in ( Q , w ) achieved for a scan through the ( 111 ) reciprocal lattice point of chromium along the ( 110 ) direction . The phonon and antiferromagnetic magnon dispersion curves ...
... reciprocal space in one run . Figure 9.17 shows the scans in ( Q , w ) achieved for a scan through the ( 111 ) reciprocal lattice point of chromium along the ( 110 ) direction . The phonon and antiferromagnetic magnon dispersion curves ...
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 |