title: Cold neutron energy dependent production of ultracold neutrons in solid deuterium.
abstract: 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.
authors.affiliation: Paul Scherrer Institut (PSI), CH-5232 Villigen PSI, Switzerland.
authors.forename: F
authors.initials: F
authors.lastname: Atchison
authors.forename: B
authors.initials: B
authors.lastname: Blau
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authors.lastname: Bodek
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authors.initials: B
authors.lastname: van den Brandt
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authors.lastname: Bryś
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authors.lastname: Daum
authors.forename: P
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authors.lastname: Fierlinger
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authors.lastname: Frei
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authors.lastname: Geltenbort
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authors.lastname: Hautle
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authors.lastname: Henneck
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authors.lastname: Heule
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authors.lastname: Holley
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authors.lastname: Kasprzak
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authors.lastname: Kirch
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authors.lastname: Knecht
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authors.lastname: Konter
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authors.lastname: Kuźniak
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authors.lastname: Liu
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authors.lastname: Morris
authors.forename: A
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authors.lastname: Pichlmaier
authors.forename: C
authors.initials: C
authors.lastname: Plonka
authors.forename: Y
authors.initials: Y
authors.lastname: Pokotilovski
authors.forename: A
authors.initials: A
authors.lastname: Saunders
authors.forename: Y
authors.initials: Y
authors.lastname: Shin
authors.forename: D
authors.initials: D
authors.lastname: Tortorella
authors.forename: M
authors.initials: M
authors.lastname: Wohlmuther
authors.forename: A R
authors.initials: AR
authors.lastname: Young
authors.forename: J
authors.initials: J
authors.lastname: Zejma
authors.forename: G
authors.initials: G
authors.lastname: Zsigmond