Investigation of Solid D 2 for UCN Sources

F Atchison; K Bodek; B van den Brandt; T Bryś; M Daum; P Fierlinger; P Geltenbort; M Giersch; P Hautle; M Hino; R Henneck; M Kasprzak; K Kirch; J Kohlbrecher; J A Konter; G Kühne; M Kuźniak; K Mishima; A Pichlmaier; D Rätz; A Serebrov; M Utsuro; A Wokaun; J Zmeskal

doi:10.6028/jres.110.076

Investigation of Solid D 2 for UCN Sources

J Res Natl Inst Stand Technol. 2005 Aug 1;110(4):491-4. doi: 10.6028/jres.110.076. Print 2005 Jul-Aug.

Authors

F Atchison¹, K Bodek², B van den Brandt¹, T Bryś¹, M Daum¹, P Fierlinger¹, P Geltenbort³, M Giersch⁴, P Hautle¹, M Hino⁵, R Henneck¹, M Kasprzak², K Kirch¹, J Kohlbrecher¹, J A Konter¹, G Kühne¹, M Kuźniak², K Mishima⁶, A Pichlmaier¹, D Rätz¹, A Serebrov⁷, M Utsuro⁸, A Wokaun⁹, J Zmeskal⁴

Affiliations

¹ Paul Scherrer Institut, Villigen, Switzerland.
² Jagellonian University, Cracow, Poland.
³ ILL, Grenoble, France.
⁴ Austrian Academy of Sciences, Vienna, Austria.
⁵ Research Reactor Inst., Kyoto University, Osaka, Japan.
⁶ Research Center for Nuclear Physics, Osaka, Japan.
⁷ Petersburg Nuclear Physics Institute, Gatchina, RussiaPaul Scherrer Institut, Villigen, Switzerland.
⁸ Research Center for Nuclear Physics, Osaka, JapanResearch Reactor Inst., Kyoto University, Osaka, Japan.
⁹ Paul Scherrer Institut, Villigen, SwitzerlandETH, Zürich, Switzerland.

Abstract

Solid deuterium (sD2) will be used for the production of ultra-cold neutrons (UCN) in a new generation of UCN sources. Scattering cross sections of UCN in sD2 determine the source yield but until now have not been investigated. We report first results from transmission and scattering experiments with cold, very cold and ultra-cold neutrons on sD2 along with light transmission and Raman scattering studies showing the influence of the sD2 crystal properties.

Keywords: Raman spectroscopy; catalyser; cold neutron beam; cryogenic converter; ortho-deuterium; ortho-para conversion; scattering cross sections; single crystal; solid deuterium; ultracold neutrons.