Investigation of storage of ultra-cold neutrons in traps
Nesvizhevsky, V. V.; Strelkov, A. V.; Geltenbort, P.; Iaydjiev, P. S.; Nesvizhevsky V. V.; Institute Laue-Langevin, 38042 Grenoble Cedex 9, France ; Petersburg Nuclear Physics Institute, 188350 Gatchina, Russia; Strelkov A. V.; Joint Institute for Nuclear Research, 141980 Dubna, Russia; Geltenbort P.; Institute Laue-Langevin, 38042 Grenoble Cedex 9, France; Iaydjiev P. S.; Rutherford Appelton Laboratory, Chilton, Didcot, Oxon OX11 0QX, UK and Institute of Nuclear Research and Nuclear Energy, Sofia, Bulgaria
Журнал:
The European Physical Journal Applied Physics
Дата:
1999
Аннотация:
It is known that losses of ultra-cold neutrons (UCN) from traps are due to the β-decay, up scattering and absorption on a surface but we have identified for the first time a complementary mechanism. We suppose that this arises from an increase in energy of the neutrons resulting in an upper energy spectral cut-off which is about twice higher than that for initial stored neutrons. The total probability for such a process equals ~10<sup>−5</sup> per collision with a trap wall made of stainless steel without or with a Fomblin oil and grease coating.
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