Long range interaction of antiprotonic helium with helium
نویسندگان
چکیده
منابع مشابه
Precision spectroscopy of antiprotonic helium
Antiprotonic helium, a neutral exotic three-body system consisting of a helium nucleus, an electron and an antiproton, is being studied at the Antiproton Decelerator of CERN by the ASAUCSA collaboration. Using laser spectroscopy of the energy levels of the antiproton in this system and comparison to theory, a value of the antiproton-to-electron mass ratio with an error of 3 ppb could be obtaine...
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Cold, two-body antiprotonic helium ions p 4He2+ and p 3He2+ with 100-ns-scale lifetimes, occupying circular states with the quantum numbers ni=28-32 and li=ni-1 have been observed. They were produced by cooling three-body antiprotonic helium atoms in an ultra-low-density helium target at temperature T approximately 10 K by atomic collisions, and then removing their electrons by inducing a laser...
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The study of pHe atomcules carried out by the PS205 collaboration at CERN-LEAR revealed many facets of this unusual 3-body system. Its structure was rst examined using a laser spectroscopy technique where it could be shown that the antiprotons occupy highly excited metastable states with principal quantum number n = q (m=M) and orbital angular momentum quantum number l = n 1 as predicted by the...
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Polarizabilities, dispersion coefficients, and long-range atom-surface interaction potentials are calculated for the n = 2 triplet and singlet states of helium using highly accurate, variationally determined, wave functions. PACS numbers: 34.20.Cf, 32.10.Dk, 34.50.Dy Typeset using REVTEX 1 The advent of doubled basis sets has made it possible to calculate precisely many properties of two-electr...
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U. Kleinekathöfer,1 M. Lewerenz,2 and M. Mladenović3 1Institut für Physik, Technische Universität Chemnitz, D-09107 Chemnitz, Germany 2Zentralinstitut für Angewandte Mathematik, Forschungszentrum Jülich GmbH, D-52425 Jülich, Germany 3Institut für Physikalische Chemie, Universität Göttingen, Tammannstrasse 6, D-37077 Göttingen, Germany (Received 18 December 1997; revised manuscript received 27 J...
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ژورنال
عنوان ژورنال: Journal of Physics: Conference Series
سال: 2014
ISSN: 1742-6588,1742-6596
DOI: 10.1088/1742-6596/488/7/072009