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P. Sperr et al., Phys. Rev. Lett., 36(1976), 405,[2] J.J. Kolata et al., Phys. Lett.,65B(1976), 333,[3] J.A. Kenhner et al., Phys. Rev., 134B(1964), .1229,[4] B. Fernandez et al., Nucl. Phys., A306(1978), 259,[5] 白兴平等，核技术，14(1991)，359,