Performance of an atomic mercury magnetometer in the neutron EDM experiment

被引：54
作者：
Green, K
Harris, PG
Iaydjiev, P
May, DJR
Pendlebury, JM
Smith, KF
van der Grinten, M
Geltenbort, P
Ivanov, S
机构：
[1] Inst Max Von Laue Paul Langevin, F-38042 Grenoble 9, France
[2] Rutherford Appleton Lab, Didcot OX11 0QX, Oxon, England
[3] Univ Sussex, Brighton BN1 9QH, E Sussex, England
[4] St Petersburg Nucl Phys Inst, St Petersburg, Russia
来源：
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 1998年 / 404卷 / 2-3期
关键词：
D O I：
10.1016/S0168-9002(97)01121-2
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
Previous measurements of the electric dipole moment (EDM) of the neutron have been limited by the systematic effect of changes in the magnetic environment. In this paper we report the performance of a newly-developed "cohabiting" magnetometer based upon measurements of the nuclear precession frequency of free mercury atoms that occupy the same volume as the neutrons. We find that we are able to observe changes as small as 10(-9) G in the volume-averaged magnetic field, allowing us to reduce the systematic errors in the EDM experiment by more than an order of magnitude in comparison with previous measurements. (C) 1998 Elsevier Science B.V. All rights reserved.
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收藏
页码：381 / 393
页数：13
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