Time-of-flight diffraction with multiple frame overlap Part II: The strain scanner POLDI at PSI

被引：76

作者：

Stuhr, U ^{[1
]}

Spitzer, H ^{[1
]}

Egger, J ^{[1
]}

Hofer, A ^{[1
]}

Rasmussen, P ^{[1
]}

Graf, D ^{[1
]}

Bollhalder, A ^{[1
]}

Schild, M ^{[1
]}

Bauer, G ^{[1
]}

Wagner, W ^{[1
]}

机构：

[1] Paul Scherrer Inst, Spallat Source Div, CH-5232 Villigen, Switzerland

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2005年 / 545卷 / 1-2期

关键词：

time-of-flight diffractometer; residual stress; strain scanner;

D O I：

10.1016/j.nima.2005.01.321

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

POLDI (Pulse-OverLap DIffractometer) is a multiple pulse-overlap diffractometer at PSI, which is designed mainly for strain-scanning experiments, The multiple pulse-overlap method Made it Possible to build a time-of-flight diffractometer at a continuous neutron source with short flight paths high resolution and high intensity. The best achievable resolutions for the relative linewidths of the Bragg reflections are between 1 x 10(-3) and 2 x 10(-3), depending on the lattice spacing. The layout of the instrument and the features of the chopper. the neutron mirror and the He-3 detector in time-focusing geometry are presented. The overall performance of the instrument is discussed with examples of strain-field measurements. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：330 / 338

页数：9