Pulsed Neutron Scattering |
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Page 50
... temperature , but occurs even at very low temperatures because of the zero - point motion . Figure 1.43 shows the scattering law as a function of Q from left to right and of temperature upwards . A particular application of hot neutrons ...
... temperature , but occurs even at very low temperatures because of the zero - point motion . Figure 1.43 shows the scattering law as a function of Q from left to right and of temperature upwards . A particular application of hot neutrons ...
Page 94
... temperature rise of about 40 K. The cooling water then causes a steady temperature drop until the next pulse arrives . The mean temperature at the centre of the most highly - rated plate is calculated to be 623 K , well below the phase ...
... temperature rise of about 40 K. The cooling water then causes a steady temperature drop until the next pulse arrives . The mean temperature at the centre of the most highly - rated plate is calculated to be 623 K , well below the phase ...
Page 116
... temperature is93 Δη n = ET ( E - 2 ) Thus , a 4 K change in effective moderator temperature around 400 K can give rise Table 3.1 . Neutron properties of some common moderators and reflectors . p ( gcm3 ) M o , ( 10-28m2 ) No ( cm ) 1 2 ...
... temperature is93 Δη n = ET ( E - 2 ) Thus , a 4 K change in effective moderator temperature around 400 K can give rise Table 3.1 . Neutron properties of some common moderators and reflectors . p ( gcm3 ) M o , ( 10-28m2 ) No ( cm ) 1 2 ...
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 |