AEgIS (Antimatter experiment: gravity, interferometry, spectroscopy) is an experiment approved by CERN with the goal of studying antihydrogen physics. In AEgIS, antihydrogen will be produced by charge exchange reactions of cold antiprotons with positronium atoms excited in a Rydberg state (n > 20). In the first phase of the experiment, controlled acceleration by an electric field gradient (Stark effect) and subsequent measurement of free fall in a Moire deflectometer will allow a test of the weak equivalence principle. In a second phase, the antihydrogen will be slowed, confined, and laser-cooled to perform CPT studies and detailed spectroscopy. In the present work, after a general description of the experiment, the present status of advancement will be reviewed, with special attention to the production and excitation of positronium atoms.
|Titolo:||Antihydrogen physics : gravitation and spectroscopy in AEgIS|
|Parole Chiave:||positronium ; atoms ; SIO2 ; antiprotons ; collisions ; beam|
|Settore Scientifico Disciplinare:||Settore FIS/01 - Fisica Sperimentale|
|Data di pubblicazione:||gen-2011|
|Digital Object Identifier (DOI):||http://dx.doi.org/10.1139/P10-099|
|Appare nelle tipologie:||01 - Articolo su periodico|