ISSN:1044-8632    

DOI:10.1080/10448639508217679

出版商:Taylor & Francis Group    

年代:1995

数据来源: Taylor

摘要:

The widely-held view that pulsed sources and reactors are complementary, the former producing epithermal neutrons and the latter cold neutrons, has been shown in recent years to be an oversimplification. The concept of complementarity, if in fact it exists, is one of methods rather than of sources, frequently allowing similar scientific topics to be examined in refreshingly different ways. As more experience is gained in the still unfolding new methods of pulsed neutron scattering, it is clear that no area can sensibly be excluded from investigation using pulsed sources. It is also crucial to realize that the body of knowledge is changing rapidly with time. The boundaries are not constant and the horizon has not yet been seen.

ISSN:1044-8632    

DOI:10.1080/10448639508217680

出版商:Taylor & Francis Group    

年代:1995

数据来源: Taylor

ISSN:1044-8632    

DOI:10.1080/10448639508217681

出版商:Taylor & Francis Group    

年代:1995

数据来源: Taylor

ISSN:1044-8632    

DOI:10.1080/10448639508217682

出版商:Taylor & Francis Group    

年代:1995

数据来源: Taylor

ISSN:1044-8632    

DOI:10.1080/10448639508217683

出版商:Taylor & Francis Group    

年代:1995

数据来源: Taylor

ISSN:1044-8632    

DOI:10.1080/10448639508217684

出版商:Taylor & Francis Group    

年代:1995

数据来源: Taylor

ISSN:1044-8632    

DOI:10.1080/10448639508217685

出版商:Taylor & Francis Group    

年代:1995

数据来源: Taylor

ISSN:1044-8632    

DOI:10.1080/10448639508217686

出版商:Taylor & Francis Group    

年代:1995

数据来源: Taylor

摘要:

ISIS is the world's most powerful pulsed spallation source, providing beams of neutrons and muons that enable the structure and dynamics of condensed matter to be probed on a microscopic scale that ranges from the subatomic to the macromolecular. The source was approved in 1977 and the first neutrons were produced in late 1984. ISIS was first described in Neutron News Vol. 1. No. 1 in 1990 and this article is an update, emphasizing the developments of the last five years. ISlS operates a large user program with experiment selection based around two submission rounds per year in April and October. Full details on applying for ISIS beam time can be obtained from the University Liaison Secretatiat at the ISlS Facility, Rutherford Appleton Laboratory, Chilton, Didcot, Oxon, 0x11 OQX, UK (Tel: +44 1235 445592; Fax: +44 1235 441235445103).

ISSN:1044-8632    

DOI:10.1080/10448639508217687

出版商:Taylor & Francis Group    

年代:1995

数据来源: Taylor

摘要:

The measurement of atomic momentum distributions in condensed matter systems by high energy neutron scattering is analogous to the measurement of electron momentum distributions by Compton scattering and the measurement of nucleon momenta by Deep Inelastic Scattering (1). The technique is known as Neutron Compton Scattering (NCS) or Deep Inelastic Neutron Scattering (DINS) by analogy with these older techniques. The principle is the same in each case; the momentum distribution of target particles (electrons, components of nuclei or atoms, respectively) is measured by inelastic scattering of high energy incident particles (photons, electrons or neutrons). The Impulse Approximation (IA), which is exact only in the limit of infinite momentum transfer (2,3), is used in the interpretation of NCS measurements and large incident energies are required to keep deviations from the IA small.

ISSN:1044-8632    

DOI:10.1080/10448639508217688

出版商:Taylor & Francis Group    

年代:1995

数据来源: Taylor