Characterization of molecular motions in biomolecular systems by elastic incoherent neutron scattering

被引：25

作者：

Magazu, Salvatore ^{[1
]}

Maisano, Giacomo ^{[1
]}

Migliardo, Federica ^{[1
,2
]}

Galli, Giovanni ^{[1
]}

Benedetto, Antonio ^{[1
]}

Morineau, Denis ^{[3
]}

Affouard, F. ^{[2
]}

Descamps, M. ^{[2
]}

机构：

[1] Univ Messina, Dipartimento Fis, I-98166 Messina, Italy

[2] Univ Lille 1, CNRS, Lab Dynam & Struct Mat Mol, UMR 8024, F-59655 Villeneuve Dascq, France

[3] Univ Rennes 1, Inst Phys Rennes, CNRS, UMR SPM 6251, F-35042 Rennes, France

来源：

JOURNAL OF CHEMICAL PHYSICS | 2008年 / 129卷 / 15期

关键词：

D O I：

10.1063/1.2989804

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In the present work the role played by the instrumental resolution function in elastic incoherent neutron scattering (EINS) experiment is discussed. An important result consists in the definition of an equivalent time t(*), which depends both on the characteristic system time and on the resolution time, for which the spatial Fourier transform of EINS intensity profile and the self-distribution function (SDF) evaluated at t=t* are proportional. Then the equivalent time t(*) is introduced in the SDF procedure, an operational recipe for the mean square displacement determination. The new revised procedure is applied on data of myoglobin in trehalose dry environment and of hydrated homologous disaccharides (sucrose and trehalose). (c) 2008 American Institute of Physics.

引用

页数：8

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