Ionization of helium and argon by very slow antiproton impact

The total cross sections for single ionization of helium and single and double ionization of argon by antiproton impact have been measured in the kinetic energy range from 3 to 25 keV using a new technique for the creation of intense slow antiproton beams. The new data provide benchmark results for...

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Bibliographic Details
Published inPhysical review letters Vol. 101; no. 4; p. 043201
Main Authors Knudsen, H, Kristiansen, H-P E, Thomsen, H D, Uggerhøj, U I, Ichioka, T, Møller, S P, Hunniford, C A, McCullough, R W, Charlton, M, Kuroda, N, Nagata, Y, Torii, H A, Yamazaki, Y, Imao, H, Andersen, H H, Tökesi, K
Format Journal Article
LanguageEnglish
Published United States 25.07.2008
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Summary:The total cross sections for single ionization of helium and single and double ionization of argon by antiproton impact have been measured in the kinetic energy range from 3 to 25 keV using a new technique for the creation of intense slow antiproton beams. The new data provide benchmark results for the development of advanced descriptions of atomic collisions and we show that they can be used to judge, for the first time, the validity of the many recent theories.
ISSN:0031-9007
DOI:10.1103/physrevlett.101.043201