A new escape channel for ultracold neutrons in traps
Geltenbort P., Nesvizhevsky V.V., Kartashov D.G., Lychagin E.V., Muzychka A.Yu., Nekhaev G.V., Shvetsov V.N., Strelkov A.V., Kharitonov A.G., Serebrov A.P., Tal'daev R.R., Pendlebury J.M.
PACS: 28.20.-v
A new surprising escape channel for ultracold neutrons (UCN) in traps was reported recently. It could be releavant to the long-standing puzzle of "too high" loss rate of UCN in traps, which is not yet completely understood and eliminated. In the present work we definitely identify the new phenomenon and investigate it in details. UCN escape from traps due to the rare events of small increase in their energy (~ 10-7eV). The reason for such an energy gain as well as its impact to the physics of UCN storage is still to be investigated.
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![](/ps/913/article_13986_800_head.png "<b>A new surprising escape channel for ultracold neutrons (UCN) in traps was reported recently. It could be releavant to the long-standing puzzle of "too high" loss rate of UCN in traps, which is not yet completely understood and eliminated. In the present work we definitely identify the new phenomenon and investigate it in details. UCN escape from traps due to the rare events of small increase in their energy (~ 10<sup>-7</sup>eV). The reason for such an energy gain as well as its impact to the physics of UCN storage is still to be investigated.</b>")