Positron plasma diagnostics and temperature control for antihydrogen production

Details Positron plasma diagnostics and temperature control for antihydrogen production Positron plasma diagnostics and temperature control for antihydrogen production

2003-07-30

arxiv.org/abs/physics/0307151v1

Phys.Rev.Lett.91:055001,2003

Physics

Plasma Physics

5 pages, 4 figures, to be published in Phys. Rev. Lett

Scientific paper

10.1103/PhysRevLett.91.055001

Production of antihydrogen atoms by mixing antiprotons with a cold, confined, positron plasma depends critically on parameters such as the plasma density and temperature. We discuss non-destructive measurements, based on a novel, real-time analysis of excited, low-order plasma modes, that provide comprehensive characterization of the positron plasma in the ATHENA antihydrogen apparatus. The plasma length, radius, density, and total particle number are obtained. Measurement and control of plasma temperature variations, and the application to antihydrogen production experiments are discussed.

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