Spin filters and supermirrors:: a comparison study of two methods of high-precision neutron polarisation analysis

被引：24

作者：

Zimmer, O

Hautle, P

Heil, W

Hofmann, D

Humblot, H

Krasnoschekova, I

Lasakov, M

Müller, TM

Nesvizhevsky, V

Reich, J

Serebrov, A

Sobolev, Y

Vassilev, A

机构：

[1] Inst Phys, D-55099 Mainz, Germany

[2] Paul Scherrer Inst, CH-5232 Villigen, Switzerland

[3] St Petersburg Nucl Phys Inst, Gatchina 188350, Russia

[4] Inst Max Von Laue Paul Langevin, F-38042 Grenoble, France

[5] Inst Phys, D-69120 Heidelberg, Germany

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2000年 / 440卷 / 03期

关键词：

neutron polarization analysis; spin filters; super mirror;

D O I：

10.1016/S0168-9002(99)01080-3

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

The precise knowledge of the neutron polarisation is needed in tests of the electroweak Standard Model using angular correlations in polarised neutron beta decay. We performed an experimental comparison study of two different methods of polarisation analysis of a cold neutron beam which are based on spin-dependent reflection, respectively, transmission. The compare devices are a supermirror analyser used in prior neutron decay studies and an opaque transmission spin filter of either polarised He-3 or polarised protons. The results of the neutron polarisation measured with the supermirror analyser and with the spin filter coincided in three different experiments within 0.1-0.2%. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：764 / 771

页数：8

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