New test of the weak equivalence principle for neutrons

被引：12

作者：

Frank, A. I. ^{[1
]}

Geltenbort, P. ^{[2
]}

Jentschel, M. ^{[2
]}

Kulin, G. V. ^{[1
]}

Kustov, D. V. ^{[1
,3
]}

Nosov, V. G. ^{[4
]}

Strepetov, A. N. ^{[4
]}

机构：

[1] Joint Inst Nucl Res, Frank Lab Neutron Phys, Moscow 101000, Russia

[2] Inst Max Von Laue Paul Langevin, F-38042 Grenoble, France

[3] Ukrainian Acad Sci, Inst Nucl Res, UA-252028 Kiev, Ukraine

[4] Russian Res Ctr, Kurchatov Inst, Moscow, Russia

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2009年 / 611卷 / 2-3期

关键词：

Ultra-cold neutrons; Gravity; Moving grating; INDUCED QUANTUM INTERFERENCE; ULTRACOLD NEUTRONS; INERTIAL MASS; DIFFRACTION; FILTERS;

D O I：

10.1016/j.nima.2009.07.088

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

We describe a neutron gravity quantum experiment of a new type. The gain in kinetic energy of free-falling neutrons is compensated by a quantum of energy h a due to phase modulation of the neutron wave. As phase modulator a grating was used moving perpendicular with respect to the direction of the neutron wave propagation. As a result, monochromatic neutrons will have exactly the same energy after falling as before the free fall. The weak equivalence principle was tested to an accuracy of 2 x 10(-3). A possible future experiment of more improved accuracy is discussed as well. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：314 / 317

页数：4

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