Neutron velocity distribution from a superthermal solid 2H 2 ultracold neutron source

I. Altarev, M. Daum, A. Frei, E. Gutsmiedl, G. Hampel, F. J. Hartmann, W. Heil, A. Knecht, J. V. Kratz, T. Lauer, M. Meier, S. Paul, U. Schmidt, Y. Sobolev, N. Wiehl, G. Zsigmond

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19 Scopus citations

Abstract

We have determined for the first time the velocity distribution of neutrons from a solid 2H2 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 1m above the UCN source level.

Original languageEnglish
Article number9
Pages (from-to)9-14
Number of pages6
JournalEuropean Physical Journal A
Volume37
Issue number1
DOIs
StatePublished - Jul 2008
Externally publishedYes

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