Cold binary and ternary fragmentations in spontaneous fission of 252 Cf

A. V. Ramayya,J. H. Hamilton,J. K. Hwang, L. K. Peker,J. Kormicki,B. R. S. Babu,T. N. Ginter,A. Sandulescu, A. Florescu, F. Carstoiu,W. Greiner,G. M. Ter-Akopian,Yu. Ts. Oganessian, A. V. Daniel, W. C. Ma, P. G. Varmette,J. O. Rasmussen, S. J. Asztalos, S. Y. Chu,K. E. Gregorich,A. O. Macchiavelli,R. W. Macleod,J. D. Cole, R. Aryaeinejad, K. Butler-Moore, M. W. Drigert, M. A. Stoyer,L. A. Bernstein, R. W. Lougheed,K. J. Moody,S. G. Prussin, S. J. Zhu, H. C. Griffin,R. Donangelo

Nuovo Cimento Della Societa Italiana Di Fisica A-nuclei Particles and Fields（2016）

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摘要

Summary The phenomenon of cold (neutronless) binary and ternary fission in spontaneous fission of 252 Cf was experimentally observed by triple gamma coincidence technique with Gammasphere with 72 gamma-ray detectors. Many correlated pairs for both binary and ternary ( 4 He, 10 Be) fission were observed in the spontaneous fission of 252 Cf. Yields of cold ternary and cold binary fission were extracted. These results are compared with the theoretical calculations using M3Y nucleon-nucleon potential and WKB approximation for barrier penetration.

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