No Cover Image

Conference Paper/Proceeding/Abstract 554 views

Electron plasmas as a diagnostic tool for hyperfine spectroscopy of antihydrogen / T Friesen; C Amole; M. D Ashkezari; M Baquero-Ruiz; W Bertsche; P. D Bowe; E Butler; A Capra; C. L Cesar; M Charlton; A Deller; N Evetts; S Eriksson; J Fajans; M. C Fujiwara; D. R Gill; A Gutierrez; J. S Hangst; W. N Hardy; M. E Hayden; C. A Isaac; S Jonsell; L Kurchaninov; A Little; N Madsen; J. T. K McKenna; S Menary; S. C Napoli; K Olchanski; A Olin; P Pusa; C. O Rasmussen; F Robicheaux; E Sarid; D. M Silveira; C So; S Stracka; R. I Thompson; D. P. van der Werf; J. S Wurtele; Dirk van der Werf; Niels Madsen; Aled Isaac; Stefan Eriksson

AIP Conference Proceedings, Volume: 1521, Issue: 1, Pages: 123 - 133

Swansea University Authors: Dirk, van der Werf, Niels, Madsen, Aled, Isaac, Stefan, Eriksson

Full text not available from this repository: check for access using links below.

Check full text

DOI (Published version): 10.1063/1.4796068

Abstract

Long term magnetic confinement of antihydrogen atoms has recently been demonstrated by the ALPHA collaboration at CERN, opening the door to a range of experimental possibilities. Of particular interest is a measurement of the antihydrogen spectrum. A precise comparison of the spectrum of antihydroge...

Full description

Published in: AIP Conference Proceedings
ISSN: 0094-243X
Published: 2013
Online Access: Check full text

URI: https://cronfa.swan.ac.uk/Record/cronfa14623
Tags: Add Tag
No Tags, Be the first to tag this record!
Abstract: Long term magnetic confinement of antihydrogen atoms has recently been demonstrated by the ALPHA collaboration at CERN, opening the door to a range of experimental possibilities. Of particular interest is a measurement of the antihydrogen spectrum. A precise comparison of the spectrum of antihydrogen with that of hydrogen would be an excellent test of CPT symmetry. One prime candidate for precision CPT tests is the ground-state hyperfine transition; measured in hydrogen to a precision of nearly one part in 1012. Effective execution of such an experiment with trapped antihydrogen requires precise knowledge of the magnetic environment. Here we present a solution that uses an electron plasma confined in the antihydrogen trapping region. The cyclotron resonance of the electron plasma is probed with microwaves at the cyclotron frequency and the subsequent heating of the electron plasma is measured through the plasma quadrupole mode frequency. Using this method, the minimum magnetic field of the neutral trap can be determined to within 4 parts in 104. This technique was used extensively in the recent demonstration of resonant interaction with the hyperfine levels of trapped antihydrogen atoms.
College: College of Science
Issue: 1
Start Page: 123
End Page: 133