Pulsed Neutron Scattering |
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Page 174
... slits . The enhanced geometrical collimation in the horizontal plane this gives can often be exploited . ( ii ) The disk slit transmits a wide solid angle of neutrons . ( iii ) It is well suited to giving a finite pseudo - random pulse ...
... slits . The enhanced geometrical collimation in the horizontal plane this gives can often be exploited . ( ii ) The disk slit transmits a wide solid angle of neutrons . ( iii ) It is well suited to giving a finite pseudo - random pulse ...
Page 175
... slit . Its curvature will be such that neutrons of a selected velocity vo , which enter the slit centrally , travel down the curved centreline of the slit . The true Archimedian spiral is well approximated by a circular slit of radius R ...
... slit . Its curvature will be such that neutrons of a selected velocity vo , which enter the slit centrally , travel down the curved centreline of the slit . The true Archimedian spiral is well approximated by a circular slit of radius R ...
Page 179
... slit , wLoHm / D ; ( iii ) The actual open area of the slit package , NwH ,; ( iv ) The rotor duty cycle , Wm / 2πLо · The last factor is found by considering the width of the moderator as a fraction of the circle of radius Lo swept out ...
... slit , wLoHm / D ; ( iii ) The actual open area of the slit package , NwH ,; ( iv ) The rotor duty cycle , Wm / 2πLо · The last factor is found by considering the width of the moderator as a fraction of the circle of radius Lo swept out ...
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 |