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Author: Robert S. Sanna Publisher: ISBN: Category : Neutrons Languages : en Pages : 50
Book Description
Measurements of neutron spectra with nuclear emulsion at various distances from a 14 MeV neutron source were made at the Nevada Test Site during Operation HENRE. These measurements and supplementary ones made using the neutron flux integrator developed at the Lawrence Radiation Laboratory, and a version of Bonner's spectrometer, are compared with theoretical calculations. Overall agreement was found to be good.
Author: Robert S. Sanna Publisher: ISBN: Category : Neutrons Languages : en Pages : 50
Book Description
Measurements of neutron spectra with nuclear emulsion at various distances from a 14 MeV neutron source were made at the Nevada Test Site during Operation HENRE. These measurements and supplementary ones made using the neutron flux integrator developed at the Lawrence Radiation Laboratory, and a version of Bonner's spectrometer, are compared with theoretical calculations. Overall agreement was found to be good.
Author: Philip C H Mitchell Publisher: World Scientific ISBN: 9814482005 Category : Science Languages : en Pages : 670
Book Description
Inelastic neutron scattering (INS) is a spectroscopic technique in which neutrons are used to probe the dynamics of atoms and molecules in solids and liquids. This book is the first, since the late 1960s, to cover the principles and applications of INS as a vibrational-spectroscopic technique. It provides a hands-on account of the use of INS, concentrating on how neutron vibrational spectroscopy can be employed to obtain chemical information on a range of materials that are of interest to chemists, biologists, materials scientists, surface scientists and catalyst researchers. This is an accessible and comprehensive single-volume primary text and reference source.
Author: Gen Shirane Publisher: Cambridge University Press ISBN: 9780521025898 Category : Science Languages : en Pages : 0
Book Description
This practical guidebook is written for graduate and post-doctoral students, as well as for experienced researchers new to neutron scattering. Introductory chapters summarize useful scattering formulas and describe the components of a spectrometer. The authors then discuss the resolution function and focusing effects. Simple examples of phonon and magnon measurements are presented. Important chapters cover spurious effects in inelastic and elastic measurements, and how to avoid them. The last chapter covers techniques for, and applications of, polarization analysis.
Author: Ferenc Mezei Publisher: Springer ISBN: 3540458239 Category : Science Languages : en Pages : 355
Book Description
Neutron spin echo (NSE) spectroscopy is the highest energy resolution neutron scattering technique available for examining a large area (in time and space) in condensed matter physics. This broad dynamic and spatial range is extensively exploited in the study of a wide range of scientific problems ranging from the dynamics of glasses, polymer melts, complex fluids and microemulsions to the elementary excitations in superfluid 4He and to ferromagnets and spin glasses. This book reviews the current status and future prospects in NSE spectroscopy describing the method, latest instrumentation and also the use of NSE in fundamental, hard- and soft-matter science. It provides first-hand information for researchers working in the fields touched by NSE. In addition, young researchers, PhD students and graduates interested in the method will obtain a comprehensive overview and guidelines to implementing the NSE technique.
Author: Pekka Hiismaki Publisher: World Scientific ISBN: 9814498645 Category : Science Languages : en Pages : 189
Book Description
Modulation spectrometry of neutrons refers to a measuring principle, characterized by classification of neutron histories in a probabilistic way, not the usual deterministic way. In order to accomplish this, neutron beams entering the sample are modulated by high-transmission, white-beam selectors of the multislit type, such as Fourier or statistical choppers or high-frequency-modulated spin-flippers. In this scheme it is impossible to decide in a unique way through which particular slit any single neutron passed, but the distribution of histories for a large population of neutrons can nevertheless be correctly obtained, by classifying each conceivable history either as a high-probability or as a low-probability event, based on the actual observed state of the neutron selector. So far the principle has been successfully applied to powder diffraction, but it seems to offer extra degrees of freedom if applied to measuring dispersion curves of coherent excitations, such as phonons in single crystals.
Author: Pekka Hiism„ki Publisher: World Scientific ISBN: 9789810227463 Category : Science Languages : en Pages : 198
Book Description
Modulation spectrometry of neutrons refers to a measuring principle, characterized by classification of neutron histories in a probabilistic way, not the usual deterministic way. In order to accomplish this, neutron beams entering the sample are modulated by high-transmission, white-beam selectors of the multislit type, such as Fourier or statistical choppers or high-frequency-modulated spin-flippers. In this scheme it is impossible to decide in a unique way through which particular slit any single neutron passed, but the distribution of histories for a large population of neutrons can nevertheless be correctly obtained, by classifying each conceivable history either as a high-probability or as a low-probability event, based on the actual observed state of the neutron selector. So far the principle has been successfully applied to powder diffraction, but it seems to offer extra degrees of freedom if applied to measuring dispersion curves of coherent excitations, such as phonons in single crystals.
Author: Robert S. Sanna
Author: Robert S. Sanna
Author: Philip C H Mitchell
Author: Gen Shirane
Author: Ferenc Mezei
Author: David J. Thomas
Author: Pekka Hiismaki
Author: R. A. Semmler
Author: Pekka Hiism„ki
Author: R. A. Semmler
Author: