Eotvos-type experiment with cold neutron

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• 作者：V.V. Voronin^a ; V.V. Fedorov^a ; ^b ; I.A. Kuznetsov^a ; E.G. Lapin^a ; S.Yu. Semenikhin^a ; Yu.P. Braginetz^a ; E.O. Vezhlev^a ; ^b
• 关键词：equivalence principle ; perfect crystal ; neutron ; dynamical di_raction
• 刊名：Physics Procedia
• 出版年：2011
• 出版时间：2011
• 年：2011
• 卷：17
• 期：Complete
• 页码：232-238
• 全文大小：618 K

文摘

A crystal-di_raction experiment is discussed to test weak equivalence principle for neutrons. The idea of the experiment is based on essential magnification of any external force, acting on a neutron under di_raction at the Bragg angles close to the π/2 for Laue di_raction case. The enhancement factor from di_raction for neutron trajectory “curvature” in the crystal due to an external field can reach magnitudes of about (10⁸ - 10⁹) in comparison with a “free” neutron in the same field. Hence, the accuracy to measure the ratio of inertial to gravitational neutron masses can reach 10^-5, that is about one order higher than best result.