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25 April 2024

» pubmed » pmid12485006

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Driven production of cold antihydrogen and the first measured distribution of antihydrogen states
G Gabrielse ; N S Bowden ; P Oxley ; A Speck ; C H Storry ; J N Tan ; M Wessels ; D Grzonka ; W Oelert ; G Schepers ; T Sefzick ; J Walz ; H Pittner ; T W Hänsch ; E A Hessels ; ;
Date:	2 Dec 2002
Journal:	Phys Rev Lett, 89 (23), 233401
Abstract:	Cold antihydrogen is produced when antiprotons are repeatedly driven into collisions with cold positrons within a nested Penning trap. Efficient antihydrogen production takes place during many cycles of positron cooling of antiprotons. A first measurement of a distribution of antihydrogen states is made using a preionizing electric field between separated production and detection regions. Surviving antihydrogen is stripped in an ionization well that captures and stores the freed antiproton for background-free detection.
Source:	PubMed, pmid12485006
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