Volume 63, Number 2, July 2003
|Page(s)||207 - 213|
|Section||Atomic and molecular Physics|
|Published online||01 November 2003|
A possible new scheme to synthesize antihydrogen and to prepare a polarised antihydrogen beam
Atomic Physics Laboratory,
The Institute of Physical and Chemical Research (RIKEN) - Wako
2 Institute of Physics, Graduate School of Arts and Sciences, University of Tokyo Tokyo 153-8902, Japan
Corresponding author: email@example.com
Accepted: 8 May 2003
A new scheme is proposed for synthesizing antihydrogen by trapping positrons at the centre of a field consisting of a magnetic quadrupole and an electric octupole. It is expected that the total electric field of this octupole with the space charge of the trapped positrons themselves will be strong enough to confine antiprotons inside the positron cloud, where the two particle species will combine to produce antihydrogen atoms spontaneously via radiative recombination. Furthermore, a numerical simulation has revealed that a considerable fraction of antihydrogen atoms in low-field-seeking states formed at 5 near the centre of the trap may be transported as a 99% polarised beam and focused 1 from the trap centre with % efficiency, corresponding to an enhancement in beam intensity by a factor 30.
PACS: 36.10.-k – Exotic atoms and molecules (containing mesons, muons, and other unusual particles) / 29.27.Hj – Polarized beams / 52.27.Jt – Nonneutral plasmas
© EDP Sciences, 2003
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