Low energy upscattering of UCN in interaction with the surface of solid state

Details Low energy upscattering of UCN in interaction with the surface of solid state Low energy upscattering of UCN in interaction with the surface of solid state

2006-11-22

arxiv.org/abs/nucl-ex/0611037v1

Phys.Lett.A367:268-270,2007

Physics

Nuclear Physics

Nuclear Experiment

12 pages, 2 figures

Scientific paper

10.1016/j.physleta.2007.03.079

In connection with the problem of anomalous losses of ultracold neutrons (UCN) in the storage in the material traps the measurements of quasi-elastic scattering of UCN in collisions with trap surface have been carried out. It was observed that the probability of quasi-elastic scattering of UCN from energy interval 0-77 neV to 90-200 neV is (2.2+/-0.2)*10^-8 per collision therefore the process of quasi-elastic scattering can not explain the effect of anomalous losses which is on the level 3*10^-5.

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