Survival probability of superheavy nuclei

Zubov, A. S.; Adamian, G. G.; Antonenko, N. V.; Иванова, С.П.; Scheid, W.

doi:10.1103/physrevc.65.024308

Cited by 108 publications

(40 citation statements)

References 21 publications

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“…8) for the single chance fission 1n reaction seems better. Apart from the calculation by Zubov et al [34] using masses due to Smolanczuk [35], there is fair agreement between the deduced and predicted values of W sur , especially considering the possibility of a systematic underestimate (of a factor of 2.7) of W sur in this work due to uncertainties in σ EVR . Of greater concern are the deviations between the predicted and deduced values of the survival probabilities for the multiple chance fission reactions, which are intrinsically harder to predict.…”

Section: Discussionsupporting

confidence: 58%

Measurement of the fusion probabilityPCNfor the reaction ofTi50with
Naik
¹
,
Loveland
²
,
Sprunger
³

et al. 2007
Phys. Rev. C
64
3
47
0
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The capture cross sections and fission fragment angular distributions were measured for the reaction of 50 Ti with 208 Pb at center of mass projectile energies (E c.m. ) of 183.7, 186.2, 190.2, 194.2, and 202.3 MeV (E * = 14.2, 16.6, 20.6, 24.7, and 32.7 MeV). From fitting the backward angle fragment angular distributions, the cross sections for quasifission and fusion-fission and P CN , the probability that the colliding nuclei go from the contact configuration to inside the fission saddle point, were deduced. These quantities, along with the known values of the evaporation residue production cross sections for this reaction, were used to deduce values of the survival probabilities, W sur , for this reaction as a function of excitation energy. The deduced values of P CN and W sur and their dependence on excitation energy differ from some current theoretical predictions of these quantities.

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Section: Discussionsupporting

confidence: 58%

Measurement of the fusion probabilityPCNfor the reaction ofTi50with
Naik
¹
,
Loveland
²
,
Sprunger
³

et al. 2007
Phys. Rev. C
64
3
47
0
View full text Add to dashboard Cite

show abstract

“…In Refs. [11][12][13][14] we have already calculated evaporation residue cross sections and excitation functions for superheavy isotopes using their properties, predicted by different theoretical models [15][16][17][18]. The results are in a good agreement with the experimental data.…”

Section: Introductionsupporting

confidence: 55%

Population of rotational bands in superheavy nuclei

Zubov

Sargsyan

Adamian

et al. 2012

EPJ Web of Conferences

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Abstract.Using the statistical approach, we study the population of ground-state rota- Fm. We calculate relative intensities of E2-transitions between the rotational states and entry spin distributions of the residual nuclei, evaporation residue cross sections, and excitation functions for these reactions. Fermi-gas model is used for the calculation of level density, and damping of shell effects both with excitation energy and angular momentum is taking into account. The results are in a good agreement with the experiment data.

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“…The formation of a superheavy compound nucleus and its subsequent deexcitation by particle emission resulting in an evaporation residue of the superheavy nucleus depends on a number of factors [1][2][3][4][5]. The production cross section of a superheavy nucleus as an evaporation residue (ER) can be written as…”

Section: Introductionmentioning

confidence: 99%

Fission and binary fragmentation reactions inSe80+Pb208and
Thomas¹,
Saxena²,
Sahu³
et al. 2007
Phys. Rev. C
17
2
8
0
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Fission and binary fragmentation of the excited nuclear systems of Z = 116 and 124 were investigated using the reactions induced by 80 Se beams on 208 Pb and 232 Th targets at bombarding energies ranging from 470 to 630 MeV. The mass and kinetic energy of the binary reaction products were reconstructed by measuring their velocities by the time-of-flight method and the angles of emission using multiwire proportional chambers. Total neutron multiplicities were measured in coincidence with the fragments, using an array of neutron detectors. The fragment mass-energy correlation was studied for the two systems. The average total kinetic energy (TKE) of fragments for the 80 Se+ 208 Pb system agrees with earlier measurements and with Viola's systematics in the mass symmetric region for compound nucleus fission, whereas for the 80 Se+ 232 Th system, the TKE values are significantly lower. This is also consistent with higher values of total neutron multiplicities observed for the case of 80 Se+ 232 Th at comparable available energies. From an extrapolation of the measured total neutron multiplicities for the mass symmetric region to zero compound nucleus excitation energy, the average number of prompt neutrons expected to be emitted in the spontaneous fission of the superheavy Z = 116 has been estimated to be ν sf tot = 10 ± 2, which is consistent with the value derived for the same compound nucleus populated in the 56 Fe+ 232 Th reaction in an earlier work. In the case of the 80 Se+ 232 Th system, similar analysis was carried out by taking the average TKE from Viola's systematics for estimating the available energy for particle emission corresponding to compound nucleus fission. In this way, by extrapolating the observed neutron multiplicities to zero compound nucleus excitation energy, a value of ν sf tot = 15 ± 2 was obtained for the spontaneous fission of the superheavy Z = 124 nucleus. The increase in the average number of neutrons emitted in fission as a function of the atomic number of the nucleus in the superheavy mass region was confirmed by comparing the results of the present work with published data.

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Survival probability of superheavy nuclei

Cited by 108 publications

References 21 publications

Measurement of the fusion probabilityPCNfor the reaction ofTi50with
Naik
¹
,
Loveland
²
,
Sprunger
³

et al. 2007
Phys. Rev. C
64
3
47
0
View full text Add to dashboard Cite

Measurement of the fusion probabilityPCNfor the reaction ofTi50with
Naik
¹
,
Loveland
²
,
Sprunger
³

et al. 2007
Phys. Rev. C
64
3
47
0
View full text Add to dashboard Cite

Population of rotational bands in superheavy nuclei

Fission and binary fragmentation reactions inSe80+Pb208and
Thomas¹,
Saxena²,
Sahu³
et al. 2007
Phys. Rev. C
17
2
8
0
View full text Add to dashboard Cite

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Survival probability of superheavy nuclei

Cited by 108 publications

References 21 publications

Measurement of the fusion probabilityPCNfor the reaction ofTi50withNaik1, Loveland2, Sprunger3 et al. 2007Phys. Rev. C643470View full textAdd to dashboardCite

Measurement of the fusion probabilityPCNfor the reaction ofTi50withNaik1, Loveland2, Sprunger3 et al. 2007Phys. Rev. C643470View full textAdd to dashboardCite

Population of rotational bands in superheavy nuclei

Fission and binary fragmentation reactions inSe80+Pb208andThomas1, Saxena2, Sahu3 et al. 2007Phys. Rev. C17280View full textAdd to dashboardCite

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Measurement of the fusion probabilityPCNfor the reaction ofTi50with
Naik
¹
,
Loveland
²
,
Sprunger
³

et al. 2007
Phys. Rev. C
64
3
47
0
View full text Add to dashboard Cite

Measurement of the fusion probabilityPCNfor the reaction ofTi50with
Naik
¹
,
Loveland
²
,
Sprunger
³

et al. 2007
Phys. Rev. C
64
3
47
0
View full text Add to dashboard Cite

Fission and binary fragmentation reactions inSe80+Pb208and
Thomas¹,
Saxena²,
Sahu³
et al. 2007
Phys. Rev. C
17
2
8
0
View full text Add to dashboard Cite