Fission threshold energies in the actinide region

Pauli, Hans–Christian; Ledergerber, T.

doi:10.1016/0375-9474(71)90449-0

Cited by 109 publications

(18 citation statements)

References 19 publications

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“…In view of these numerical uncertainties in the values of /I2 and /14, we can thus conclude that one may use the relations (11) and (12) together with the radii constants (13) to calculate the charge multipole moments directly from the equilibrium deformations of the potential. In detailed comparisons with the experiment, however, it might be wise to calculate the moments from the actual proton distributions, as is done in sect.…”

Section: Moments Of Inertiamentioning

confidence: 99%

Deformations and moments of inertia of actinide nuclei in the ground and shape isomeric states

Brack¹,

Ledergerber²,

Pauli³

et al. 1974

Nuclear Physics A

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Section: Moments Of Inertiamentioning

confidence: 99%

Deformations and moments of inertia of actinide nuclei in the ground and shape isomeric states

Brack¹,

Ledergerber²,

Pauli³

et al. 1974

Nuclear Physics A

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“…[9,10] parameters, with and without shell corrections taken into account, respectively. The dash-dotted curve represents the calculation through the use of Pauli and Ledergerber [12] parameters without the account of shell corrections. The experimental points are from [11,[13][14][15][16][17][18][19]; the spread limits of the results of the measurements taken by different authors are also shown…”

Section: Calculation For the Fissionmentioning

confidence: 99%

An analysis of nuclear fissility for intermediate-energy proton induced reactions

Iljinov¹,

Cherepanov

Chigrinov³

1978

Z Physik A

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In the framework of cascade-evaporation model for nuclear reactions and the liquiddrop model for fission the experimental data on nuclear fissility by protons with energy < 1 GeV was analysed. The authors studied the influence on the value of fissility of the shell effects, pre-equilibrium particle emission from the excited nuclei and the dependence of the height of the fission barriers on the energy of the excited nucleus.

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“…In all cases we have plotted our predictions for several nuclides for which data are not available. Though the thorium and protoactinium isotopes were excluded while fitting, we explain the usually "anomalous" thorium isotopes [3] very well both for VA and V B while the previous calculations are discrepant by about 1.5 MeV for the inner barrier height. For the second minima our values are around 3 MeV and as such are lower than the required values of about 4.5 MeV.…”

Section: V=v(e)-v(~o) and ===(E)-~(eo)mentioning

confidence: 80%

A new macroscopic-microscopic description of the double-humped fission barriers

Gupta

Satpathy

1987

Z. Physik A - Atomic Nuclei

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The new mass relation based on the generalised Hugenholtz-Van Hove theorem has been used to obtain a relation for the fission barriers of three nuclei. This relation has been found satisfactory to describe the data. Further a general expression has been given describing satisfactorily the inner barrier height, the second minimum and the second barrier height for all actinides with an rms deviation of 0.32, 0.32 and 0.33 MeV respectively. The estimated shell energies agree reasonably well with those of Brack et al. In addition the barriers for thorium isotopes have been described well. PACS: 25.85-WRecently one of us and Nayak have proposed a new mass relation [1] for finite nuclei based on a generalization of the Hugenholtz-Van Hove (HVH) theorem [2] in many-body theory. This mass relation takes into account non-perturbatively the two main features of nuclear dynamics, namely the single particle (microscopic) feature and the liquid drop (macroscopic) feature. It has been shown [-1] to be quite successful in describing the masses of nuclei along the valley of stability and also predicting the masses of exotic neutron-rich nuclei far from the valley. In this note we have attempted to apply this relation to the study of strong deformation phenomenon like fission. We recollect below the main steps of the derivation of the mass relation proposed in Ref. 1 to facilitate the discussion.First the usual HVH theorem was extended to asymmetric nuclear matter. Then for the ground state of such a system with N neutrons, Z proton and N-Z asymmetry parameter fl =N + Z' the extended HVH theorem reduces towhere E is the total energy, A =N +Z, e. and ep are the neutron and proton Fermi energies. Equation (i) has been used to arrive at a corresponding equation valid for finite nuclei by taking into account the finite size effects like surface. Coulomb and pairing through the ansatz E~c,,(N, Z) E(N, Z)= E~(N, Z)--

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Fission threshold energies in the actinide region

Cited by 109 publications

References 19 publications

Deformations and moments of inertia of actinide nuclei in the ground and shape isomeric states

Deformations and moments of inertia of actinide nuclei in the ground and shape isomeric states

An analysis of nuclear fissility for intermediate-energy proton induced reactions

A new macroscopic-microscopic description of the double-humped fission barriers

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