Electron bremsstrahlung in collisions of 223 MeV/u He-like uranium ions with gaseous targets

Beyer, H.; Bosch, F.; Brinzanescu, O.; Dunford, R.W. (Argonne National Lab. (ANL), IL (United States)); Frankfurt Univ. (Germany)); Franzke, B.; Gesellschaft fuer Schwerionenforschung mbH, Darmstadt (Germany); Keller, S. (Frankfurt Univ. (Germany)); Kozhuharov, C.; Liesen, D.; Livingston, A.E. (Notre Dame Univ., IN (United States)); Ludziejewski, T.; Meier, J.; Menzel, G.; Mokler, P.H.; Reich, H.; Rymuza, P. (Institute for Nuclear Studies, Swierk (Poland)); Stachura, Z. (Henryk Niewodniczanski Inst. of Nuclear Physics, Cracow (Poland)); Steck, M.; Stenner, L. (Gesellschaft fuer Schwerionenforschung mbH, Darmstadt (Germany)); Stoehlker, T. (Gesellschaft fuer Schwerionenforschung mbH, Darmstadt (Germany); Swiat, P.; Warczak, A. (Jagiellonian Univ., Krakow (Poland))

Electron bremsstrahlung in collisions of 223 MeV/u He-like uranium ions with gaseous targets

Abstract

The bremsstrahlung process in the domain of strong Coulomb fields has been investigated for N_2 and Ar target electrons colliding with He-like uranium ions at 223 MeV/u. The doubly differential cross sections for bremsstrahlung were measured at the laboratory observation angles of 48 , 90 , and 132 . Substantial discrepancies were found between the experimental cross secions and the first order Born approximation calculations. The reported data provide a new testing ground for non-perturbative treatment of the coupling between radiation and matter in the presence of strong fields. (orig.)SIGLEAvailable from FIZ Karlsruhe / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekDEGerman

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