Pulsed Neutron Scattering |
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Page 272
... vanadium counts will therefore reflect any effects from differences in mean brightness during the two runs . These longer time fluctuations can be averaged out by using a sample changer , which automatically exchanges the samples ...
... vanadium counts will therefore reflect any effects from differences in mean brightness during the two runs . These longer time fluctuations can be averaged out by using a sample changer , which automatically exchanges the samples ...
Page 273
... vanadium runs respectively , S , > S , and S , SB , the sample to vanadium run durations vary inversely to the count - rates T Tv འ S1 S 7.3 . Correcting the data The run may now be over ; the experiment is not . Raw time - of - flight ...
... vanadium runs respectively , S , > S , and S , SB , the sample to vanadium run durations vary inversely to the count - rates T Tv འ S1 S 7.3 . Correcting the data The run may now be over ; the experiment is not . Raw time - of - flight ...
Page 373
... vanadium sample . The peak will appear to be somewhat inelastic because of resolution effects . The integral over incident 0 E¡ d20 dodE , Sample Vanadium E1 Έ , Ei -Tw -Tw E1 E1 E Figure 9.42 . Measuring absolute intensities with a ...
... vanadium sample . The peak will appear to be somewhat inelastic because of resolution effects . The integral over incident 0 E¡ d20 dodE , Sample Vanadium E1 Έ , Ei -Tw -Tw E1 E1 E Figure 9.42 . Measuring absolute intensities with a ...
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 |