UCN Production With a Single Crystal of Ortho-Deuterium.
The present paper reports on the preliminary experimental results concerning a new concept of ultracold neutron production with a single crystal converter of ortho-deuterium lying in the ground rotational state at the low temperature of about 10 K, which should make it possible to utilize a guided cold neutron beam instead of irradiating the converter material in the inside of high radiation fields. The successful observation of the clear Bragg scattering pattern from the single crystal converter and the reasonable results from the first experimental trial of the ultracold neutron production with the single crystal are shown.
Research Center for Nuclear Physics, Osaka University, Japan.
M
M
Utsuro
Research Center for Nuclear Physics, Osaka University, Japan.
M
M
Tanaka
Graduate Course of Science, Osaka University, Japan.
K
K
Mishima
Research Center for Nuclear Physics, Osaka University, Japan.
Y
Y
Nagai
Research Center for Nuclear Physics, Osaka University, Japan.
T
T
Shima
Department of Physics, Faculaty of Science, Kobe University, Japan.
Y
Y
Fukuda
Department of Physics, Faculaty of Science, Kobe University, Japan.
T
T
Kohmoto
Graduate Course of Science, Kyoto University, Japan.
T
T
Momose
Division of Research Reactor, Japan Atomic Energy Research Institute, Japan.
A
A
Moriai
Research Reactor Institute, Kyoto University, Japan.
K
K
Okumura
Research Reactor Institute, Kyoto University, Japan.
H
H
Yoshino
Bragg scattering; Raman spectroscopy; catalyser; cold neutron beam; cryogenic converter; ortho-deuterium; ortho-para conversion; single crystal; time-of-flight; ultracold neutron guide; ultracold neutrons