Fission Research at IRMM

Hambsch, F.‐J.; Oberstedt, S.; Zeynalov, Sh.; Kornilov, N.; Fabry, I.; Borcea, R.; Al-Adili, Ali

doi:10.1051/epjconf/20100207002

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“…The calculated E * (A) (plotted with full circles) are in agreement with the 'experimental' E * (A) data. As can be seen the calculated Figure 9 shows the E * (A) calculations for 252 Cf(SF) (full circles), which are in overall good agreement with the 'experimental' E * (A) data obtained from experimental ν(A) taken from EXFOR [25] and [26,27] and plotted with different open black and grey symbols. The calculated E * (A) is not able to describe the experimental data in the range of a few mass units around A H = 130 (overestimation of experimental E * (A)) and, respectively, around A L = 122 (underestimation of experimental data).…”

Section: Comparison Of Excitation Energies Of Fully Accelerated Ff Wi...supporting

confidence: 73%

Modelling of the total excitation energy partition including fragment deformation and excitation energies at scission

Morariu

Tudora

Hambsch³

et al. 2012

J. Phys. G: Nucl. Part. Phys.

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In the frame of refined prompt neutron emission models used for evaluation purposes, the partition of the total excitation energy (TXE) between fully accelerated fission fragments plays an important role. In this work the TXE partition between complementary fission fragments is obtained by taking into account the energy components at scission. The method consists of two steps: the calculation of additional deformation energies of nascent fragments (which are relaxed into excitation energy at full acceleration) and the partition of the available excitation energy at scission (obtained by subtracting the calculated deformation energies from TXE) assuming statistical equilibrium. The obtained fragment excitation energies, as the sum of deformation and excitation energy components at scission, are then used in the frame of the Point-by-Point model to describe experimental data of prompt fission quantities. This TXE partition method was applied to the following fissioning systems: 233,235 U(n th ,f), 239 Pu(n th ,f), 237 Np(n,f) at 0.8 and 5.5 MeV incident energies and 252 Cf(SF). The presented procedure of TXE partition is based exclusively on models and straightforward assumptions practically without the need for adjustable parameters (the parameters have been adjusted a priori and to global systematics). It allows the prediction of prompt neutron emission data and, therefore, may be successfully used for evaluation purposes.

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Section: Comparison Of Excitation Energies Of Fully Accelerated Ff Wi...supporting

confidence: 73%

Modelling of the total excitation energy partition including fragment deformation and excitation energies at scission

Morariu

Tudora

Hambsch³

et al. 2012

J. Phys. G: Nucl. Part. Phys.

View full text Add to dashboard Cite

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Fission Research at IRMM

Abstract: Abstract. Fission Research at JRC-IRMM has a longstanding tradition. The present paper is discussing recent investigations of fission fragment properties of 238 U(n,f),

Cited by 1 publication

References 3 publications

Modelling of the total excitation energy partition including fragment deformation and excitation energies at scission

Modelling of the total excitation energy partition including fragment deformation and excitation energies at scission

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