Upper-limit determination of resonant trielectronic recombination cross-section for krypton using crystal channeling

M. Chevallier (1) , C. Cohen (2) , N. Cue , D. Dauvergne (3) , J. Dural (4) , P. Gangnant (5) , R. Kirsch (3) , A. L'Hoir (2) , D. Lelièvre (4) , J.F. Libin (5) , P.H. Mokler , J.-C. Poizat (3) , H.-T. Prinz , J.-M. Ramillon (4) , J. Remillieux (3) , P. Roussel-Chomaz (5) , Jean-Pierre Rozet (2) , F. Sanuy (3) , Didier Schmaus , C. Stephan (6) , M. Toulemonde (4) , Dominique Vernhet (2) , A. Warczak

1 CAS-PHABIO
2 GPS - Groupe de Physique des Solides
3 IPNL - Institut de Physique Nucléaire de Lyon
4 CIRIL - Centre Interdisciplinaire de Recherche Ions Lasers
5 GANIL - Grand Accélérateur National d'Ions Lourds
6 IPNO - Institut de Physique Nucléaire d'Orsay

We used channeling through a thin crystal to get an estimate of the cross section of the resonant trielectronic capture by Kr34+ ions. K x-ray–K x-ray coincidence measurements were performed with a selection on the charge state and energy loss of transmitted ions. An upper limit of 1.9×10-27 cm2 at the resonance is obtained, and this represents an improvement by two orders of magnitude with respect to previous ion-gas experiments. The possibility to reach the theoretical predictions experimentally is discussed.

Domaines: Science des matériaux [cond-mat.mtrl-sci]

M. Chevallier, C. Cohen, N. Cue, D. Dauvergne, J. Dural, et al.. Upper-limit determination of resonant trielectronic recombination cross-section for krypton using crystal channeling. Physical Review A : Atomic, molecular, and optical physics [1990-2015], 2000, 61 (2), pp.022724. ⟨10.1103/PhysRevA.61.022724⟩. ⟨hal-00008653⟩