Model-independent analysis of inelastic-neutron-scattering data at high momentum transfer

被引：7

作者：

Andreani, C

Filabozzi, A

Pace, E

Mayers, J

机构：

[1] UNIV ROMA TOR VERGATA, IST NAZL FIS NUCL, I-00173 ROME, ITALY

[2] RUTHERFORD APPLETON LAB, ISIS FACIL, DIDCOT OX11 0QX, OXON, ENGLAND

来源：

PHYSICAL REVIEW B | 1996年 / 54卷 / 09期

关键词：

D O I：

10.1103/PhysRevB.54.6255

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A model-independent procedure is proposed which allows us to obtain the asymptotic scaling function at infinite momentum transfer and a comprehensive assessment of deviations of deep inelastic-neutron-scattering data from a perfect scaling behavior, which are due to the finite values of energy and momentum transfers to the target atom. The procedure is applied to simulated and experimental data on polycrystalline ZrH2 at T=20 and 290 K. We observe that the impulse approximation, valid for infinite energy and momentum transfers, is not yet completely reached at the finite momentum transfer values q of neutron experiments even at q similar or equal to 60 Angstrom(-1). It is argued that, beyond the specific case of ZrH2, this procedure can be used for the description of deep inelastic-neutron scattering from other molecular and atomic systems.

引用

收藏

页码：6255 / 6262

页数：8

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