Empirical saddle-point and ground-state masses as a probe of the droplet model

Dahlinger, M.; Vermeulen, D.; Schmidt, Karl‐Heinz

doi:10.1016/0375-9474(82)90535-8

Cited by 94 publications

(87 citation statements)

References 55 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The same is at the end of nuclear stability for the heaviest nuclei. At the same time, this component disappears in going from Hs to Cn nuclei according to the model calculations [30,[44][45][46][47]. So fission barriers for the Figure 8) and without it along with a different scaling for the LD fission barriers are shown by different lines for both the reactions.…”

Section: Cnr*11mentioning

confidence: 78%

“…In the same way the macroscopic components of fission barriers for the heavier nuclei from Rn to Th were obtained, but in this case only very asymmetric combinations were considered in the SM analysis. These data are shown in Figure 6 together with the predictions of different models [30,[44][45][46][47] and tabulated values [48] for the macroscopic barriers (bottom panels). Shell corrections calculated in [17] and those obtained in the framework of the present analysis (see Section 2) could be also compared (upper panels).…”

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

confidence: 99%

“…Macroscopic fission barriers derived with the SM analysis of the ER and fission cross sections measured in very asymmetric reactions leading to the Rn * , Fr * , Ra * and Th * compound nuclei (different symbols with error bars correspond to the observed CN evaporation chains). Lines correspond to the LD [30], empirical [44], finite-range [45] (FR), Thomas-Fermi [46] (TF) and Lublin-Strasbourg drop [47] (LSD) model calculations performed for these nuclei (bottom panels). Refs to the experimental data obtained in reactions leading to the Rn * , Fr * , Ra * and Th * compound nuclei can be found in [49], [50], [12,33] and [34,49], respectively.…”

Section: Heaviest Nuclei Productionmentioning

confidence: 99%

See 2 more Smart Citations

Fusion probability and survivability in estimates of heaviest nuclei production

Sagaidak

2012

EPJ Web of Conferences

View full text Add to dashboard Cite

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.

show abstract

Section: Cnr*11mentioning

confidence: 78%

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

confidence: 99%

Section: Heaviest Nuclei Productionmentioning

confidence: 99%

See 1 more Smart Citation

Fusion probability and survivability in estimates of heaviest nuclei production

Sagaidak

2012

EPJ Web of Conferences

View full text Add to dashboard Cite

show abstract

“…The macroscopic components of the barriers B m = k f B LD derived from the analysis of Fr and Ra data [9,10] are lower than any predictions [2,3,11] (apart the values from [12]). The B m values are about a smooth function of N , e.g., for Fr nuclei k f is reduced from 0.85 to 0.8, in going from N = 131 to 117 (Fig.…”

Section: Statistical Model Considerationsmentioning

confidence: 96%

“…At the same time, a reasonable description of FBHs close to the stability line (where model parameters are tuned to experimental data) is usually accomplished [2]. Large discrepancies between predictions of different models and FBHs derived for neutron-deficient nuclei produced in nuclear reactions were also observed earlier [3]. The differences between different calculations for extremely neutron-rich (hypothetical) Po nuclei reach 30 MeV.…”

Section: Introductionmentioning

confidence: 99%

Estimates of fission barrier heights for neutron-deficient Po to Ra nuclei produced in fusion reactions

Sagaidak

2017

EPJ Web Conf.

View full text Add to dashboard Cite

Abstract. The cross section data for fission and evaporation residue production in fusion reactions leading to nuclei from Po to Ra have been considered in a systematic way in the framework of the conventional barrierpassing (fusion) model coupled with the statistical model. The cross section data obtained in very asymmetric projectile-target combinations can be described within these models rather well with the adjusted model parameters. In particular, one can scale and fix the macroscopic (liquid-drop) fission barrier heights (FBHs) for nuclei involved in the de-excitation of compound nuclei produced in the reactions. The macroscopic FBHs for nuclei from Po to Ra have been derived in the framework of such analysis and compared with the predictions of various theoretical models.

show abstract

Production and Identification of Transactinide Elements

2003

Handbook of Nuclear Chemistry

View full text Add to dashboard Cite

Empirical saddle-point and ground-state masses as a probe of the droplet model

Cited by 94 publications

References 55 publications

Fusion probability and survivability in estimates of heaviest nuclei production

Fusion probability and survivability in estimates of heaviest nuclei production

Estimates of fission barrier heights for neutron-deficient Po to Ra nuclei produced in fusion reactions

Production and Identification of Transactinide Elements

Contact Info

Product

Resources

About