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RECC and REC measurements for heavy ion impact on foil targets at relativistic energies

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Published under licence by IOP Publishing Ltd
, , Citation T Azuma et al 1997 Phys. Scr. 1997 250 DOI 10.1088/0031-8949/1997/T73/081

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Author affiliations

1 Institute of Physics, College of Arts and Sciences, University of Tokyo, 3-8-1, Komaba, Meguro, Tokyo 153, Japan

2 National Institute for Fusion Science, Nagoya 464-01, Japan

3 Tokyo Medical and Dental University, Yushima, Tokyo 113, Japan

4 Institute of Physical and Chemical Research, Wako, Saitama 371-01, Japan

5 Accelerator Center, University of Tsukuba, Tsukuba 305, Japan

6 National Institute of Radiological Sciences, Chiba 263, Japan

7 Institute of Physics, Jagiellonian University, Kraków 30-059, Poland

Dates

  1. Received 23 September 1996

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1402-4896/1997/T73/250

Abstract

X-ray spectra have been observed for the collision system of bare C6+, Ne10+, Si14+ and Ar18+ ions of 75-290 MeV/u with Be and C foil targets.

The radiative electron capture into continuum states (RECC) of these projectiles is always noticeable. For 75 and 150 MeV/u Ar18+, we can also observe a peak due to radiative electron capture into the K-shell (K-REC) in addition to RECC. A small ridge corresponding to K-REC is discerned also for 75 MeV/u Si14+. These features reflect the energy and projectile charge dependence of the intensities of RECC and REC x-rays. The observed edge energies of RECC and peak energies of REC are consistent with estimated values based on energy conservation. The observed absolute intensities of these components are also compared with calculations.

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10.1088/0031-8949/1997/T73/081