期刊
EUROPEAN PHYSICAL JOURNAL A
卷 37, 期 1, 页码 9-14出版社
SPRINGER
DOI: 10.1140/epja/i2008-10604-8
关键词
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We have determined for the first time the velocity distribution of neutrons from a solid H-2(2) ultracold neutron (UCN) source: The spectrum rises sharply above 4.5m/s and has a maximum around 7m/s after transport in an 8m long guide. The number of neutrons in the UCN velocity range (< 7m/s) may be increased by a factor of two by placing the experiment I m above the UCN source level.
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