Investigation of the reaction 64Ni+238U being an option of synthesizing element 120

Козулин, Э. М.; Knyazheva, G. N.; Itkis, I. M.; Иткис, М. Г.; Bogachev, A. A.; Крупа, Л.; Loktev, T.; Smirnov, Sergey; Zagrebaev, V. I.; Äystö, J.; Trzaska, W. H.; Rubchenya, V. A.; Vardaci, E.; Stefanini, A. M.; Cinausero, M.; Corradi, L.; Fioretto, E.; Mason, P.; Prete, G.; Silvestri, Riccardo; Beghini, S.; Montagnoli, G.; Scarlassara, F.; Hanappe, F.; Khlebnikov, S. V.; Kliman, J.; Brondi, A.; Nitto, A. Di; Moro, R.; Gelli, N.; Szilner, S.

doi:10.1016/j.physletb.2010.02.041

Cited by 82 publications

(92 citation statements)

References 16 publications

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“…The value extracted from the data [7] is included into the systematics shown in Figure 8. Similar values extracted from the data [60,63] obtained recently are not included into the systematics, but they are in agreement with it.…”

Section: Cnr*11supporting

confidence: 76%

“…This extrapolation gives us considerably higher magnitudes of macroscopic fission barriers than one can get with a straight fit of calculations to the measured ER cross sections. For example, in the case of reactions with the 32 S [38,39], 40 Ar [36] and 60 Ni [39] projectiles leading to the 214,216 Th * compound nuclei, straightforward fits give us k f =0.56 comparing to the k f =0.614 value obtained with the extrapolation. Using this scaling one can obtain fusion probability values (with some dependence on the extrapolated k f values) and reproduce ER cross sections measured in the investigated reactions leading to the neutron-deficient Th compound nuclei.…”

Section: Er Production In the Vicinity Of N=126 Shellmentioning

confidence: 92%

“…The analysis of ratios of the CN-fission to capture cross sections obtained in the 238 U induced reaction on heavier targets [7] shows the decrease in the fusion probability with Z of a target nucleus without any dependence on the energy. The last statement is not fulfilled in the case of the 48 Ca+ 238 U fission data [7,60] for which decrease in the fusion probability is observed even at energies above the nominal fusion barrier [28]. In further study one can use the systematics of the P fus values derived from the fission data [6,7] corresponding to energies above the nominal fusion barrier [28].…”

Section: Cnr*11mentioning

confidence: 96%

“…As one can see in Figure 8 these values do not contradict to the ones derived from fission data. Similar fits were used to estimate the asymptotic values of P fus for the 48 Ca + 238 U and 36 S+ 238 U data obtained in the fission experiments [7,60,63]. The value extracted from the data [7] is included into the systematics shown in Figure 8.…”

Section: Cnr*11mentioning

confidence: 99%

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Fusion probability and survivability in estimates of heaviest nuclei production

Sagaidak

2012

EPJ Web of Conferences

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Abstract. Production of the heavy and heaviest nuclei (from Po to the region of superheavy elements close to Z=114 and N=184) in fusion-evaporation reactions induced by heavy ions has been considered in a systematic way within the framework of the barrier-passing model coupled with the statistical model (SM) of de-excitation of a compound nucleus (CN). Excitation functions for fission and evaporation residues (ER) measured in very asymmetric combinations can be described rather well. One can scale and fix macroscopic (liquid-drop) fission barriers for nuclei involved in the calculation of survivability with SM. In less asymmetric combinations, effects of fusion suppression caused by quasi-fission (QF) are starting to appear in the entrance channel of reactions. QF effects could be semi-empirically taken into account using fusion probabilities deduced as the ratio of measured ER cross sections to the ones obtained in the assumption of absence of the fusion suppression in corresponding reactions. SM parameters (fission barriers) obtained at the analysis of a very asymmetric combination leading to the production of (nearly) the same CN should be used for this evaluation.

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Section: Cnr*11supporting

confidence: 76%

Section: Er Production In the Vicinity Of N=126 Shellmentioning

confidence: 92%

Section: Cnr*11mentioning

confidence: 96%

Section: Cnr*11mentioning

confidence: 99%

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Fusion probability and survivability in estimates of heaviest nuclei production

Sagaidak

2012

EPJ Web of Conferences

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“…Two kinds of shell-effects on the di-nuclear system have been observed. The first one is due to shell closures in the entrance channel [28], the second one, as studied here in the case of fusion fission, is due to shell-effects in final fragments [29][30][31]. It is known that with the increase in excitation energy, nuclear shell effect decreases.…”

Section: Shell Effect and Fragment Mass Distributionmentioning

confidence: 99%

Fusion – fission dynamics: fragment mass distribution studies

Bhattacharya

Chaudhuri

Ghosh

et al. 2015

EPJ Web of Conferences

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Abstract. Using the major accelerator facilities available in India, detailed experimental studies have been made to understand the mechanism of quasi-fission and role of nuclear shell effect in heavy nuclei. Fission fragment mass distribution has been used as the probe to explore the role of entrance channel effects on fusion-fission and quasifission dynamics. Fission fragment mass distribution has also been demonstrated to be useful to identify the phenomenon of 'washing out' of nuclear shell effect with excitation energy.

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