Cluster Interpretation of Parity Splitting in Alternating Parity Bands

Shneidman, T. M.; Adamian, G. G.; Antonenko, N. V.; Jolos, R. V.; Scheid, W.

doi:10.1142/9789812811233_0022

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Collective Spectra Along the Fission Barrier1

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2012

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“…Since the main contribution to the wave function comes from mononucleus and alpha-particle DNS the intrinsic excitations of the spherical light fragment are neglected. The form of the simplified Hamiltonian and details of the calculations are presented in [11], where the model is applied to the description of the excitation spectra of different actinides at normal deformation.…”

Section: Collective Spectra Along the Fission Barriermentioning

confidence: 99%

Collective spectra along the fission barrier

Shneidman

Андреев

Pigni

et al. 2012

EPJ Web of Conferences

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Abstract. Discrete and continuous spectra of fissioning nuclei at the humps of fission barriers (Bohr transition states) and in the intermediate wells (superdeformed and hyperdeformed states) play a key role in the calculation of fission cross sections. A theoretical evaluation of the collective parts of the spectra is possible within the framework of the dinuclear system model, which treats the wave function of the fissioning nucleus as a superposition of a mononucleus configuration and two-cluster configurations in a dynamical way, permitting exchange of upper-shell nucleons between clusters. The impact of theoretical spectra on neutron-induced fission cross sections and, in combination with an improved version of the scission-point model, on angular distribution of fission fragments is evaluated for plutonium isotopes of interest to nuclear energy applications.

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Section: Collective Spectra Along the Fission Barriermentioning

confidence: 99%