Development of a High Mass-Resolution TOF-ERDA System for a Wide Mass Range

W.Hong 1,2, S.Hayakawa 1, K.Maeda 2, S.Fukuda 2, M.Yanokura 2, M.Aratani 3, K.Kimura 2, Y.Gohshi 1, I.Tanihata 2

1) University of Tokyo, 3-1, Hongo 7 chome, Bunkyo-ku, Tokyo, Japan
2) The Institute Physical and Chemical Research(RIKEN), Hirosawa 2-1, Wako, Saitama 351, Japan
3) Institute for Environmental Sciences, Rokkashomura, Aomori, Japan


A high mass-resolution TOF-ERDA system installed at RILAC of RIKEN is presented. The target chamber was designed for TOF-ERDA. A charged-particle detector and a time detector for TOF measurements were installed in the chamber. The dataacquisition system, comprising CAMAC modules, is controlled by a personal computer. The analysis of the spectra is performed off-line. The mass resolution of the system for masses of around A=28 was evaluated to be 1.9. H, C, N and O in a PIQ film could be measured simultaneously, and the peaks of C, N and O were separated.

Nuclear Instruments and Methods B124 (1997)95

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