On the production of nuclides in the region of Z = 126 and N = 184

Sikkeland, T.; Clarkson, J.E.; Lebeck, Donald F.; Ghiorso, A.

doi:10.1016/0020-1650(66)80042-9

Cited by 3 publications

(3 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The first predictions of fusion-evaporation cross-section were far too optimistic [4]. Nix and Sierk showed that the dynamical trajectory for the fusing system must overcome a conditional saddle in a multidimensional space to form a compound nucleus.…”

Section: Introductionmentioning

confidence: 99%

Elimination of fast variables and initial slip: a new mechanism for fusion hindrance in heavy-ion collisions

Boilley¹,

Abe²,

Cauchois³

et al. 2019

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

View full text Add to dashboard Cite

Synthesis of superheavy elements by fusion-evaporation reactions is limited by the extremely low cross-sections. One of the reasons of the reduced cross-sections is the so-called quasifission that hinders fusion for reactions with heavy systems. It is well acknowledged that fusion hindrance is due to a conditional saddle that has to be overcome in a dissipative environment to reach the compound configuration from the contact point. However, the dynamical description is not yet well established. In this communication we show that elimination of fast variables to reduce the number of degrees of freedom leads to a slip of the initial conditions of the slow variables which has a significant impact on the amplitude of the hindrance phenomenon. The energy dependence of the slip is similar to phenomenological shift introduced in the "fusion by diffusion" model.

show abstract

Section: Introductionmentioning

confidence: 99%

Elimination of fast variables and initial slip: a new mechanism for fusion hindrance in heavy-ion collisions

Boilley¹,

Abe²,

Cauchois³

et al. 2019

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

View full text Add to dashboard Cite

show abstract

“…Sikkeland et al (77) analyzed their experimental data in an effort to establish whether r ,./rf actually exhibits a maximum at N = 152; they didn't find a maximum but did find a break in the plot of r n/rf versus Nat N = 152, which indicates that f n/r, increases with N less rapidly after than before N = 152. Sikkeland et al (75) and Wong (78) have calculated cross sections for the production of the nucleus with Z = 126, N = 184 by heavy-ion bombardment.…”

Section: \\mentioning

confidence: 99%

“…A number of suggestions have been made concerning types of reactions that might be suitable for the production of new heavy isotopes, in both the near and far transactinide regions, through bombardment of suitable target nuclei with heavy ions (19,44,74,75,110) . The following two sections (Sections 4.…”

Section: Production Processesmentioning

confidence: 99%