Radiative electron capture to the continuum and the short-wavelength limit of electron-nucleus bremsstrahlung in 90A MeV U88 + ((1s2)(2s2))+N2 Collisions

Radiative electron capture to the continuum and the short-wavelength limit of electron-nucleus bremsstrahlung in 90A MeV U88 + ((1s2)(2s2))+N2 Collisions

We have measured the continuum momentum distribution for radiative electron capture to the continuum (RECC) cusp electrons in 90A MeV U88+ + N2-->U88+ + N2 +* + ecusp(0 degrees ) + hnu (RECC) collisions. We demonstrate that x rays coincident with RECC cusp electrons originate from the short-wavel...

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Veröffentlicht in:Physical review letters 2007-10, Vol.99 (16), p.163201-163201
Hauptverfasser: Nofal, M, Hagmann, S, Stöhlker, Th, Jakubassa-Amundsen, D H, Kozhuharov, Ch, Wang, X, Gumberidze, A, Spillmann, U, Reuschl, R, Hess, S, Trotsenko, S, Banas, D, Bosch, F, Liesen, D, Moshammer, R, Ullrich, J, Dörner, R, Steck, M, Nolden, F, Beller, P, Rothard, H, Beckert, K, Franczak, B
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Sprache:eng
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Zusammenfassung:We have measured the continuum momentum distribution for radiative electron capture to the continuum (RECC) cusp electrons in 90A MeV U88+ + N2-->U88+ + N2 +* + ecusp(0 degrees ) + hnu (RECC) collisions. We demonstrate that x rays coincident with RECC cusp electrons originate from the short-wavelength limit of the electron-nucleus bremsstrahlung and explain the asymmetric cusp shape by comparison with theory within the relativistic impulse approximation.
ISSN:0031-9007