Barrier distributions derived from quasielastic excitation functions for the12,13C+105,1

Abstract

Quasielastic excitation functions for the 12,13 Cϩ 105,106 Pd systems were measured at near barrier energies. The representations of the fusion barrier distributions derived from the measured cross sections were analyzed by comparison with simplified coupled-channel calculations. The influence of transfer reaction channels can be distinguished from that due to the inelastic excitation. The influence of two-phonon state on the barrier distributions was evaluated.

Effects of coupling to breakup in theLi6,7+Zn64systems at near-barrier energies

“…for the angle-dependent centrifugal potential and averaging the cross sections for the two angles. The barrier distributions were derived from the excitation functions using the same procedure [59] that was applied to the experimental data [37].…”

Quasielastic backscattering and barrier distributions for the6,7Li+64Znsystems

“…The first derivative of the experimental excitation functions in Eq. (2) were obtained by using a least-squares linear fit method [29]. The straight lines are fit to three successive experimental points and the derivatives are obtained from the slopes of these lines.…”

Fusion barrier distribution derived from quasielastic excitation functions inB11,C12Sahu1, Saxena2, Nayak3 et al. 2006Phys. Rev. C5000View full textAdd to dashboardCite

“…Though the effect of proton transfer on the fusion process were found to be small in these reactions, the inclusion of coupling to positive Q-value proton stripping channels improved the fits to the low-energy cross sections [14]. The barrier distributions in 12 C+ 105,106 Pd and 13 C+ 105,106 Pd reactions have been studied using quasielastic excitation functions [15]. The low-Z projectiles and medium-Z targets were used in Ref.…”

“…The low-Z projectiles and medium-Z targets were used in Ref. [15], where the coupling due to transfer channels could explain the barrier distributions much better as compared to the coupling due to the inelastic channels alone. This is possible because the effect of inelastic channels is hindered since the strength of the coupling to inelastic channels is proportional to the product of projectile and target atomic numbers.…”

“…The multiple barriers present in the nuclear reactions as a result of coupling is directly extracted through a transformation of the experimental data. The distribution of potential barriers clearly showing the barrier structure can be obtained from the precise measurements of the experimental fusion cross section [15,18,19] as:…”