A polycapillary bending and focusing lens for neutrons
作者:
H. H. Chen-Mayer,
D. F. R. Mildner,
V. A. Sharov,
Q. F. Xiao,
Y. T. Cheng,
R. M. Lindstrom,
R. L. Paul,
期刊:
Review of Scientific Instruments
(AIP Available online 1997)
卷期:
Volume 68,
issue 10
页码: 3744-3750
ISSN:0034-6748
年代: 1997
DOI:10.1063/1.1148020
出版商: AIP
数据来源: AIP
摘要:
A glass polycapillary lens that both bends and focuses a cold neutron beam has been designed and constructed. The bender focuser guides part of the incident beam away from its line of sight and focuses it to a spot of width 0.65 mm at a distance 95 mm from the lens exit and 20 mm below the bottom edge of the beam path, with a gain of 20 in neutron current density. The neutron transmission characteristics of the lens have been determined with two types of position-sensitive detectors, a charge injection device, and an imaging plate. The lens has been tested with prompt gamma measurements on a gadolinium shard and titanium foil. ©1997 American Institute of Physics.
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