The new structure powder diffractometer at the FRM-II in Garching

被引：13

作者：

Gilles, R ^{[1
]}

Artus, G

Saroun, J

Boysen, H

Fuess, H

机构：

[1] Univ Technol Munich, Reaktorstn, D-85747 Garching, Germany

[2] Univ Technol Darmstadt, D-64287 Darmstadt, Germany

[3] Acad Sci Czech Republ, Inst Nucl Phys, CZ-25068 Rez, Czech Republic

[4] Univ Munich, D-80333 Munich, Germany

来源：

PHYSICA B | 2000年 / 276卷

关键词：

powder diffraction; neutron instrument; Monte Carlo simulations; supermirrors;

D O I：

10.1016/S0921-4526(99)01371-X

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

SPODI, the structure powder diffractometer, will be installed on beamline SR 8 at the FRM-II in Garching. The instrument has been designed to achieve an ideal compromise of good resolution up to very high 2 theta (by using a monochromator take-off angle of 155 degrees) and high flux with special emphasis on 'good' profile shapes and low background. To optimise the parameters of the optical components like coatings of neutron guides, monochromator and seller collimators. Monte Carlo simulations were carried out. To check the results of the simulation calculations two different independent programs (MCSTAS and RESTRAX) were applied. An option for using a small-angle neutron scattering (SANS) device will eventually be included to perform Bragg scattering, SANS and diffuse scattering simultaneously on the sample. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：87 / 88

页数：2