Cold neutron energy dependent production of ultracold neutrons in solid deuterium

F. Atchison, B. Blau, K. Bodek, B. Van Den Brandt, T. Bryś, M. Daum, P. Fierlinger, A. Frei, P. Geltenbort, P. Hautle, R. Henneck, S. Heule, A. Holley, M. Kasprzak, K. Kirch, A. Knecht, J. A. Konter, M. Kuźniak, C. Y. Liu, C. L. MorrisA. Pichlmaier, C. Plonka, Y. Pokotilovski, A. Saunders, Y. Shin, D. Tortorella, M. Wohlmuther, A. R. Young, J. Zejma, G. Zsigmond

Research output: Contribution to journalArticlepeer-review


A measurement of the production of ultracold neutrons from velocity-selected cold neutrons on gaseous and solid deuterium targets is reported. The expected energy dependence for two-particle collisions with well defined neutron and Maxwell-Boltzmann distributed molecular velocities is found for the gas target. The solid target data agree in shape with the phonon density-of-states curve and provide strong evidence for the phonon model including multiphonon excitations.

Original languageEnglish (US)
Article number262502
JournalPhysical review letters
Issue number26
StatePublished - Dec 27 2007
Externally publishedYes

ASJC Scopus subject areas

  • General Physics and Astronomy


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