Direct experimental verification of neutron acceleration by the material optical potential of solid 2H2 |
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| Authors: | Altarev I Atchison F Daum M Frei A Gutsmiedl E Hampel G Hartmann F J Heil W Knecht A Kratz J V Lauer T Meier M Paul S Sobolev Y Wiehl N |
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| Institution: | Physik-Department, Technische Universit?t München, Munich, Germany. |
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| Abstract: | We have measured the acceleration of neutrons by the material optical potential of solid 2H2. Using a gravitational spectrometer, we find a minimal kinetic energy Ec = (99+/-7) neV of neutrons from a superthermal ultracold neutron (UCN) source with solid 2H2 as an UCN converter. The result is in excellent agreement with theoretical predictions, Ec = 106 neV. |
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