Towards the first measurement of matter-antimatter gravitational interaction

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F18%3A00328515" target="_blank" >RIV/68407700:21340/18:00328515 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1051/epjconf/201818202040" target="_blank" >http://dx.doi.org/10.1051/epjconf/201818202040</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1051/epjconf/201818202040" target="_blank" >10.1051/epjconf/201818202040</a>

Result language

angličtina

Original language name

Towards the first measurement of matter-antimatter gravitational interaction

Original language description

The AEgIS (Antimatter Experiment: Gravity, Interferometry, Spectroscopy) is a CERN based experiment with the central aim to measure directly the gravitational acceleration of antihydrogen. Antihydrogen atoms will be produced via charge exchange reactions which will consist of Rydberg-excited positronium atoms sent to cooled antiprotons within an electromagnetic trap. The resulting Rydberg antihydrogen atoms will then be horizontally accelerated by an electric field gradient (Stark effect), they will then pass through a moiré deflectometer. The vertical deflection caused by the Earth's gravitational field will test for the first time the Weak Equivalence Principle for antimatter. Detection will be undertaken via a position sensitive detector. Around 103 antihydrogen atoms are needed for the gravitational measurement to be completed. The present status, current achievements and results will be presented, with special attention toward the laser excitation of positronium (Ps) to the n=3 state and the production of Ps atoms in the transmission geometry.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

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OECD FORD branch

10301 - Atomic, molecular and chemical physics (physics of atoms and molecules including collision, interaction with radiation, magnetic resonances, Mössbauer effect)

Project

<a href="/en/project/LTT17018" target="_blank" >LTT17018: Getting new knowledge of the microworld using the CERN infrastructure</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2018

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

EPJ Web of Conferences

ISBN

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ISSN

2101-6275

e-ISSN

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Number of pages

10

Pages from-to

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Publisher name

EDP Sciences

Place of publication

Les Ulis

Event location

OAC Crete

Event date

Aug 17, 2017

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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