Scaling behavior of the ground-state antihydrogen yield as a function of positron density and temperature from classical-trajectory Monte Carlo simulations

Sep 3, 2014
6 pages
Published in:
  • Phys.Rev.A 90 (2014) 3, 032704
  • Published: Sep 3, 2014
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Abstract: (APS)

Antihydrogen production has reached such a level that precision spectroscopic measurements of its properties are within reach. In particular, the ground-state level population is of central interest for experiments aiming at antihydrogen spectroscopy. The positron density and temperature dependence of the ground-state yield is a result of the interplay between recombination, collisional, and radiative processes. Considering the fact that antihydrogen atoms with the principal quantum number n=15 or lower quickly cascade down to the ground state within 1 ms, the number of such states is adopted as a measure of useful antihydrogen atoms. It has been found that the scaling behavior of the useful antihydrogen yield is different depending on the positron density and positron temperature.

Note:
  • 6 pages, 6 figures
  • 34.80.Lx
  • 32.60.+i
  • 32.70.Cs
  • 36.10.-k
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