First Laser-Controlled Antihydrogen Production

Storry, C. H.; Speck, A.; Sage, D. Le; Guise, Nicholas D.; Gabrielse, Gerald; Grzonka, D.; Oelert, W.; Schepers, G.; Sefzick, T.; Pittner, Heiko; Herrmann, M. G.; Walz, J.; Hänsch, Theodor W.; Comeau, D.; Hessels, E. A.

doi:10.1103/physrevlett.93.263401

Cited by 168 publications

(106 citation statements)

References 21 publications

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“…This is in stark contrast to the rather high H temperature observed when using the nested-well technique pioneered by ATRAP and ATHE-NA [24,25]. Our proposed technique is conceptually similar to a charge exchange technique based on Rydberg cesium [26] which has been successfully demonstrated by ATRAP [27].…”

Section: Antihydrogen Recombination and Beam Formationcontrasting

confidence: 42%

Proposed antimatter gravity measurement with an antihydrogen beam

Kellerbauer

Amoretti²,

Белов³

et al. 2008

Nuclear Instruments and Methods in Physics Research Section B:

250

175

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The principle of the equivalence of gravitational and inertial mass is one of the cornerstones of general relativity. Considerable efforts have been made and are still being made to verify its validity. A quantum-mechanical formulation of gravity allows for non-Newtonian contributions to the force which might lead to a difference in the gravitational force on matter and antimatter. While it is widely expected that the gravitational interaction of matter and of antimatter should be identical, this assertion has never been tested experimentally. With the production of large amounts of cold antihydrogen at the CERN Antiproton Decelerator, such a test with neutral antimatter atoms has now become feasible. For this purpose, we have proposed to set up the AEGIS experiment at 0168-583X/$ -see front matter Ó 2007 Published by Elsevier B.V.

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Section: Antihydrogen Recombination and Beam Formationcontrasting

confidence: 42%

Proposed antimatter gravity measurement with an antihydrogen beam

Kellerbauer

Amoretti²,

Белов³

et al. 2008

Nuclear Instruments and Methods in Physics Research Section B:

250

175

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“…11,12 The production of low energy antihydrogen using a method that requires positronium has also been demonstrated. 13 Antihydrogen research may ultimately provide experimental tests of CPT (charge conjugation, parity, time reversal) and gravity symmetries. [14][15][16][17][18][19][20] There exist numerous conflicting issues associated with using nested Penning traps to produce antiatoms with sufficiently low energies and also in sufficient numbers for conducting high precision CPT and gravity measurements.…”

Section: Introductionmentioning

confidence: 99%

Simulation of an aperture-based antihydrogen gravity experiment

Ordonez

Hedlof

2012

AIP Advances

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A Monte Carlo simulation is presented of an experiment that could potentially determine whether antihydrogen accelerates vertically up or down as a result of earth's gravity. The experiment would rely on methods developed by existing antihydrogen research collaborations and would employ a Penning trap for the production of antihydrogen within a uniform magnetic field. The axis of symmetry of the cylindrical trap wall would be oriented horizontally, and an axisymmetric aperture (with an inner radius that is smaller than the cylindrical trap wall radius) would be present a short distance away from the antihydrogen production region. Antihydrogen annihilations that occur along the cylindrical trap wall would be detected by the experiment. The distribution of annihilations along the wall would vary near the aperture, because some antihydrogen that would otherwise annihilate at the wall would instead annihilate on the aperture. That is, a shadow region forms behind the aperture, and the distribution of annihilations near the boundary of the shadow region is not azimuthally symmetric when the effect of gravity is significant. The Monte Carlo simulation is used together with analytical modeling to determine conditions under which the annihilation distribution would indicate the direction of the acceleration of antihydrogen due to gravity

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“…ATRAP demonstrated that H could be produce by a two-step, laser-controlled charge exchange process [57]. This process has possible advantages over the three-body formation in a nested Penning trap [23] in that the lasers control the excitation state of the H that is formed, and by offering H kinetic energies as cold (or hot) as the p from which the H forms.…”

Section: Building On 100 Times More H Atoms Produced By Laser-controlmentioning

confidence: 99%

The Production and Study of Cold Antiprotons and Antihydrogen

Gabrielse¹

2015

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First Laser-Controlled Antihydrogen Production

Cited by 168 publications

References 21 publications

Proposed antimatter gravity measurement with an antihydrogen beam

Proposed antimatter gravity measurement with an antihydrogen beam

Simulation of an aperture-based antihydrogen gravity experiment

The Production and Study of Cold Antiprotons and Antihydrogen

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