A cold antihydrogen beam will be produced by charge exchange reaction between coldmantiprotons and positronium excited in Rydberg states. Rydberg positronium (with quantum numbernbetween 20 and 30) will be produced by a two steps laser excitation. The antihydrogen beam, after beingaccelerated by Stark effect, will fly through the gratings of a moir ́ e deflectometer. The deflection of the horizontal beam due to its free fall will be measured by a position sensitive detector. It is estimated that the detection of about 10^3 antihydrogen atoms is required to determine the gravitational acceleration witha precision of 1%
AEgIS experiment: Towards antihydrogen beam production for antimatter gravity measurements
GENOVA, PABLO;RICCARDI, CRISTINA;ROTONDI, ALBERTO;
2014-01-01
Abstract
A cold antihydrogen beam will be produced by charge exchange reaction between coldmantiprotons and positronium excited in Rydberg states. Rydberg positronium (with quantum numbernbetween 20 and 30) will be produced by a two steps laser excitation. The antihydrogen beam, after beingaccelerated by Stark effect, will fly through the gratings of a moir ́ e deflectometer. The deflection of the horizontal beam due to its free fall will be measured by a position sensitive detector. It is estimated that the detection of about 10^3 antihydrogen atoms is required to determine the gravitational acceleration witha precision of 1%File in questo prodotto:
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