Foil excited K X-ray transitions in few-electron sulphur ions

Abstract
The spectrum of K alpha , K alpha h and K beta X-rays from H-, He-, Li- and Be-like sulphur, excited during the passage of 65 MeV sulphur ions through thin carbon foils, has been measured. The observed structure agrees quite well with the structure predicted by theoretical transition energy and intensity calculations. A low-energy component of the He-like K alpha line has been ascribed to the presence of a 3s spectator electron. The present results are compared with those obtained in laser-plasma experiments and those from previous beam-foil measurements.
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