## Pulsed neutron scattering |

### From inside the book

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Page 127

If one needs cold neutrons, a cold moderator gives an obvious and clearcut gain

irrespective of the

region which was formerly an ambient Maxwellian but is now epithermal, the ...

If one needs cold neutrons, a cold moderator gives an obvious and clearcut gain

irrespective of the

**figure of merit**. If the wavelength range of interest lies in theregion which was formerly an ambient Maxwellian but is now epithermal, the ...

Page 182

To answer this we must calculate the transmitted flux and pulse width as a

function of the number of slits and compute a

moderator width, equation (4.20) is easily adapted to answer this. Substituting for

the slit ...

To answer this we must calculate the transmitted flux and pulse width as a

function of the number of slits and compute a

**figure of merit**n/At2. For a fixedmoderator width, equation (4.20) is easily adapted to answer this. Substituting for

the slit ...

Page 187

Alum) 05 02 0 1 0 05 0 02 ~l 1 1 1 1 1 2 5 1 0 20 50 1 0 0 200 500 1 00 0 2000

E0 I meV I Figure 4.26. ... The dashed line shows an effective flux calculated

according to the

reactor ...

Alum) 05 02 0 1 0 05 0 02 ~l 1 1 1 1 1 2 5 1 0 20 50 1 0 0 200 500 1 00 0 2000

E0 I meV I Figure 4.26. ... The dashed line shows an effective flux calculated

according to the

**figure of merit**of the pulsed source compared with a typicalreactor ...

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### Contents

HOW PULSED SOURCES WORK | 68 |

NEUTRON | 98 |

PULSED SOURCES VERSUS REACTORS | 150 |

Copyright | |

9 other sections not shown

### Common terms and phrases

absorber absorption accelerator atoms background beam tube beryllium Bragg reflection calculated cell collimation count-rate counter bank cross-section crystal analyser crystal monochromator curve defined density depends detector diffraction diffractometer direct geometry distance distribution dose effect efficiency elastic energy loss energy transfer epithermal equation fast neutrons figure of merit fission function give given Harwell hydrogen incident beam incident energy incident flight path incident neutron incoherent incoherent scattering intensity 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 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 slab moderator slit solid angle spectrometer spectrum spin spread target temperature thermal thickness time-of-flight transmission typical unit vanadium velocity vibrational wave-vector wavelength y-rays