Development of a compact in situ polarized 3He neutron spin filter at Oak Ridge National Laboratory

被引：25

作者：

Jiang, C. Y. ^{[1
]}

Tong, X. ^{[1
]}

Brown, D. R. ^{[1
]}

Chi, S. ^{[2
]}

Christianson, A. D. ^{[2
]}

Kadron, B. J. ^{[1
]}

Robertson, J. L. ^{[1
]}

Winn, B. L. ^{[2
]}

机构：

[1] Oak Ridge Natl Lab, Instrument & Source Design Div, Oak Ridge, TN 37831 USA

[2] Oak Ridge Natl Lab, Quantum Condensed Matter Div, Oak Ridge, TN 37831 USA

来源：

REVIEW OF SCIENTIFIC INSTRUMENTS | 2014年 / 85卷 / 07期

基金：

美国能源部;

关键词：

EXCHANGE; GAS;

D O I：

10.1063/1.4890391

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

We constructed a compact in situ polarized He-3 neutron spin filter based on spin-exchange optical pumping which is capable of continuous pumping of the He-3 gas while the system is in place in the neutron beam on an instrument. The compact size and light weight of the system simplifies its utilization on various neutron instruments. The system has been successfully tested as a neutron polarizer on the triple-axis spectrometer (HB3) and the hybrid spectrometer (HYSPEC) at Oak Ridge National Laboratory. Over 70% He-3 polarization was achieved and maintained during the test experiments. Over 90% neutron polarization and an average of 25% transmission for neutrons of 14.7 meV and 15 meV was also obtained. (C) 2014 AIP Publishing LLC.

引用

页数：4

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