Eur. Phys. J. D 4, 271-277 (1998)
https://doi.org/10.1007/s100530050209

Radiative electron capture into continuum in relativistic collisions of bare C ions with solid matter

¹ Jagiellonian University, Institute of Physics, Reymonta 4, Cracow 30-059, Poland
² National Institute for Fusion Science, Toki 509-5202, Japan
³ College of Arts and Sciences, University of Tokyo, Komaba, Tokyo 153, Japan
⁴ National Institute of Radiological Sciences, Anagawa, Chiba 263, Japan

Corresponding author: ^a ufwarcza@kinga.cyf-kr.edu.pl

Received: 3 May 1998
Revised: 16 July 1998
Accepted: 29 July 1998
Published online: 15 December 1998

Abstract

Continuum X-rays emitted from Be- and C-targets bombarded with 75-290 MeV/u C⁶⁺ ions were observed with an HPGe detector placed at 90° to the beam direction. In all spectra two components could be clearly distinguished: Radiative Electron Capture into Continuum (RECC) forming a characteristic edge, and Secondary Electron Bremsstrahlung (SEB) which dominates at high photon energies. The shape of the spectra was compared to a theoretical description. A special emphasis was given to the details of the RECC edge. It has been found that at the highest projectile energy of 290 MeV/u, in opposite to the lower beam energies, the detailed structure of this edge cannot be reproduced satisfactory within the approach applied.