Pulsed Neutron Scattering |
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Page 113
... ratios If we have a given epithermal spectrum n ( E ) = A / E , what will be the neutron density n1h in the Maxwellian distribution which builds up ? This ratio nn / A is called the ' moderating ratio ' . It depends on the ratio of the ...
... ratios If we have a given epithermal spectrum n ( E ) = A / E , what will be the neutron density n1h in the Maxwellian distribution which builds up ? This ratio nn / A is called the ' moderating ratio ' . It depends on the ratio of the ...
Page 279
... ratio L1 = 4 ( L 。 + L1 ) . Here k , is the truly elastic wave - vector defined by Qe = 2k , sin ( p / 2 ) . = The ratio f = L1 / ( Lo + L1 ) of the scattered to total flight paths is an important parameter in the inelasticity ...
... ratio L1 = 4 ( L 。 + L1 ) . Here k , is the truly elastic wave - vector defined by Qe = 2k , sin ( p / 2 ) . = The ratio f = L1 / ( Lo + L1 ) of the scattered to total flight paths is an important parameter in the inelasticity ...
Page 282
... ratio f = L1 / ( Lo + L1 ) Qe f 1 Q = + 1 - 2ƒ + x2 - 2x cos ( ) 1/2 ( 7.22 ) - 2 ( 1 −ƒ ) \ x sin ( 0/2 ) where -1 = ܐ y 2A ( 241 ) , [ 1 - cos ( + sin ( sin ( ) ) ] . ( A + 1 ) 2 1 A Figure 7.14 shows the effect . It is increasingly ...
... ratio f = L1 / ( Lo + L1 ) Qe f 1 Q = + 1 - 2ƒ + x2 - 2x cos ( ) 1/2 ( 7.22 ) - 2 ( 1 −ƒ ) \ x sin ( 0/2 ) where -1 = ܐ y 2A ( 241 ) , [ 1 - cos ( + sin ( sin ( ) ) ] . ( A + 1 ) 2 1 A Figure 7.14 shows the effect . It is increasingly ...
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 |