Energy distributions and yields of long range alpha particles emitted during spontaneous fission of 238,240,242,244Pu isotopes

Sérot, O.; Wagemans, C.

doi:10.1016/s0375-9474(98)00465-5

Cited by 22 publications

(20 citation statements)

References 16 publications

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“…Using the formalism described above, we have calculated the kinetic energy of the long range alpha particle in the ternary fission of [238][239][240][241][242][243][244] Pu and is given in Table II. It is to be noted that the obtained results are found to be in good agreement with the experimental data [19].…”

Section: Fission Of 238-244 Pu Isotopessupporting

confidence: 85%

“…First of all, the alpha cluster must be preformed within the fissioning nucleus and secondly it must gain enough energy to overcome the Coulomb barrier of the scission nucleus. Serot and Wagemans [19] demonstrated that, the parameters like fissility parameter Z 2 /A, the alpha cluster preformation factor S α and fission modes also plays an important role in the emission probability of long range alpha particles.…”

Section: G Emission Probability Of Long Range Alpha Particlementioning

confidence: 99%

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α-accompanied cold ternary fission ofPu238–244isotopes in equatorial and collinear configuration

2015

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The cold ternary fission of 238 Pu, 240 Pu, 242 Pu and 244 Pu isotopes, with 4 He as light charged particle, in equatorial and collinear configuration has been studied within the Unified ternary fission model (UTFM). The fragment combination 100 Zr+ 4 He+ 134 Te possessing the near doubly magic nuclei 134 Te (N=82, Z=52) gives the highest yield in the alpha accompanied ternary fission of 238 Pu. For the alpha accompanied ternary fission of 240 Pu, 242 Pu and 244 Pu isotopes, the highest yield was found for the fragment combination with doubly magic nuclei 132 Sn (N=82, Z=50) as the heavier fragment. The deformation and orientation of fragments have also been taken into account for the alpha accompanied ternary fission of [238][239][240][241][242][243][244] Pu isotopes, and it has been found that in addition to closed shell effect, ground state deformation also plays an important role in determining the isotopic yield in the ternary fission process. The emission probability and kinetic energy of long range alpha particles have been calculated and are found to be in good agreement with the experimental data.

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Section: Fission Of 238-244 Pu Isotopessupporting

confidence: 85%

Section: G Emission Probability Of Long Range Alpha Particlementioning

confidence: 99%

α-accompanied cold ternary fission ofPu238–244isotopes in equatorial and collinear configuration

2015

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“…Vermote et al [24] experimentally studied the emission probability and the energy distribution of alpha particles in the ternary fission of 244-248 Cm isotopes, but its mass distribution has not been studied so far. We have computed the emission probability of long range alpha particle emitted in the ternary fission of 242-248 Cm isotopes and are in good agreement with the experimental data [23,24]. 248 Cm and are found to be in good agreement with the experimental data.…”

Section: β βsupporting

confidence: 77%

The emission probabilities of long range alpha particles from even–even^244–252Cm isotopes

Santhosh¹,

Krishnan²,

Priyanka³

2014

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

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“…So, it is expected that LRA-emission is favored when the nucleus fissions following the Standard II mode. In order to check this prediction, LRA-emission probabilities have been measured [27] for several Pu-isotopes. The choice of these isotopes (238,24o,242,244p u ( sf )) comes from the work of D ematt( s and Wagemans [28] who have demonstrated that these nuclei have identical properties (charge number, spin parity, zero excitation energy) except their fission mode components which strongly vary.…”

Section: Influence Of the Fission Modesmentioning

confidence: 99%

A Comparison of Triton and Alpha Emission Characteristics in Ternary Fission

Wagemans¹,

Sérot²

2002

Dynamical Aspects of Nuclear Fission

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In the first part of this paper, the fundamental and applied interest of ternary particle emission is briefly outlined. The main emission characteristics of ternary a's and tritons (angular and energy distributions, yields) are compared and discussed. Special attention is given to observed differences between tritons and a's, such as the strong difference in yield, the (apparent?) difference in energy distribution and the fluctuations of the t/a ratio. In a second part we report on recent progress in our systematic study of the tritonand a-emission characteristics in spontaneous and thermal neutron induced fission. In the third part of the talk, a detailed discussion and interpretation of the observed phenomena is given. Concerning ternary a-emission, we highlight the strong influence on the ternary a-emission probability of both the fission modes followed by the fissioning nucleus and the a-cluster preformation probability. Concerning triton emission, we establish a new correlation between the triton emission probability (t/B) extrapolated to zero excitation energy with the average number of prompt neutrons (< v >) emitted by the same compound nucleus at zero excitation energy. This correlation allows to treat simultaneously all ternary fission data coming from spontaneous as well as thermal neutron induced fission. Lastly, we discuss the impact of the fissioning nucleus excitation energy on the ternary emission probability: the different behaviour of tritons and a's suggests a possible difference in their emission mechanism.

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Energy distributions and yields of long range alpha particles emitted during spontaneous fission of 238,240,242,244Pu isotopes

Cited by 22 publications

References 16 publications

α-accompanied cold ternary fission ofPu238–244isotopes in equatorial and collinear configuration

α-accompanied cold ternary fission ofPu238–244isotopes in equatorial and collinear configuration

The emission probabilities of long range alpha particles from even–even^244–252Cm isotopes

A Comparison of Triton and Alpha Emission Characteristics in Ternary Fission

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Energy distributions and yields of long range alpha particles emitted during spontaneous fission of 238,240,242,244Pu isotopes

Cited by 22 publications

References 16 publications

α-accompanied cold ternary fission ofPu238–244isotopes in equatorial and collinear configuration

α-accompanied cold ternary fission ofPu238–244isotopes in equatorial and collinear configuration

The emission probabilities of long range alpha particles from even–even244–252Cm isotopes

A Comparison of Triton and Alpha Emission Characteristics in Ternary Fission

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The emission probabilities of long range alpha particles from even–even^244–252Cm isotopes