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Shift of the 21+ state of 10Be in ternary cold fission of 252Cf

Phys. Rev. C 61, 041602(R) – Published 17 March 2000
Ş. Mişicu, A. Săndulescu, and W. Greiner

Abstract

Recent experimental data indicate that in the ternary cold fission of 252Cf the energy of the first excited state of the accompanying light cluster 10Be is decreased by an amount ranging between 6 and 26 keV. A model is proposed to calculate the shift of the vibrational 21+ state in 10Be when its heavy companions are the even-even nuclei 146Ba and 96Sr. The stiffness parameters of the β vibrations are calculated within the self-consistent Hartree-Fock method with BCS pairing correlations taken into account, and their change is determined by the interaction of the light cluster with the heavy fragments. The results point to a dependence of the shift magnitude and signature on the relative distance between the three clusters and their mutual orientation. Eventually it is the anharmonic perturbation of the spherical vibrator which is responsible for obtaining a negative energy shift of the 21+ state.

DOI: http://dx.doi.org/10.1103/PhysRevC.61.041602

  • Received 2 December 1999
  • Published 17 March 2000

© 2000 The American Physical Society

Authors & Affiliations

Ş. Mişicu1,2,*, A. Săndulescu1,2, and W. Greiner2

  • 1National Institute for Nuclear Physics, Bucharest-Magurele, P.O. Box MG-6, Romania
  • 2Institut für Theoretische Physik der J. W. Goethe Universität, Frankfurt am Main, Germany

  • *Electronic address: misicu@theor1.theory.nipne.ro

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