Abstract
The ultracold neutrons (UCN) reflection from beryllium powder at different slab thicknesses and different packing densities is measured. The reduced UCN loss coefficient {eta}=(1.75{+-}0.35)x10{sup -4} for thermally untreated beryllium is extracted from experimental data. The formerly obtained experimental results on UCN reflection from beryllium after high temperature outgasing are reconsidered. The loss coefficient {eta} at room temperature in this case is obtained to be (6.4{+-}2.5)x10{sup -5}, which is an order of magnitude higher the theoretical one. The extraction of the loss coefficient from the experimental data is based on the modified diffusion theory where albedo reflection depends on packing density. 15 refs.; 3 figs.
Citation Formats
Golikov, V V, Ignatovich, V K, and Kulagin, E N.
Measurement of the ultracold neutrons loss coefficient in beryllium power; Izmerenie koehffitsienta poter` ul`trakholodnykh nejtronov v poroshke berilliya.
JINR: N. p.,
1991.
Web.
Golikov, V V, Ignatovich, V K, & Kulagin, E N.
Measurement of the ultracold neutrons loss coefficient in beryllium power; Izmerenie koehffitsienta poter` ul`trakholodnykh nejtronov v poroshke berilliya.
JINR.
Golikov, V V, Ignatovich, V K, and Kulagin, E N.
1991.
"Measurement of the ultracold neutrons loss coefficient in beryllium power; Izmerenie koehffitsienta poter` ul`trakholodnykh nejtronov v poroshke berilliya."
JINR.
@misc{etde_10119774,
title = {Measurement of the ultracold neutrons loss coefficient in beryllium power; Izmerenie koehffitsienta poter` ul`trakholodnykh nejtronov v poroshke berilliya}
author = {Golikov, V V, Ignatovich, V K, and Kulagin, E N}
abstractNote = {The ultracold neutrons (UCN) reflection from beryllium powder at different slab thicknesses and different packing densities is measured. The reduced UCN loss coefficient {eta}=(1.75{+-}0.35)x10{sup -4} for thermally untreated beryllium is extracted from experimental data. The formerly obtained experimental results on UCN reflection from beryllium after high temperature outgasing are reconsidered. The loss coefficient {eta} at room temperature in this case is obtained to be (6.4{+-}2.5)x10{sup -5}, which is an order of magnitude higher the theoretical one. The extraction of the loss coefficient from the experimental data is based on the modified diffusion theory where albedo reflection depends on packing density. 15 refs.; 3 figs.}
place = {JINR}
year = {1991}
month = {Dec}
}
title = {Measurement of the ultracold neutrons loss coefficient in beryllium power; Izmerenie koehffitsienta poter` ul`trakholodnykh nejtronov v poroshke berilliya}
author = {Golikov, V V, Ignatovich, V K, and Kulagin, E N}
abstractNote = {The ultracold neutrons (UCN) reflection from beryllium powder at different slab thicknesses and different packing densities is measured. The reduced UCN loss coefficient {eta}=(1.75{+-}0.35)x10{sup -4} for thermally untreated beryllium is extracted from experimental data. The formerly obtained experimental results on UCN reflection from beryllium after high temperature outgasing are reconsidered. The loss coefficient {eta} at room temperature in this case is obtained to be (6.4{+-}2.5)x10{sup -5}, which is an order of magnitude higher the theoretical one. The extraction of the loss coefficient from the experimental data is based on the modified diffusion theory where albedo reflection depends on packing density. 15 refs.; 3 figs.}
place = {JINR}
year = {1991}
month = {Dec}
}