Zobrazeno 1 - 10
of 54
pro vyhledávání: '"Takigawa Noboru"'
We discuss quantum effects in the diffusion process which is used to describe the shape evolution from the touching configuration of fusing two nuclei to a compound nucleus. Applying the theory with quantum effects to the case where the potential fie
Externí odkaz:
http://arxiv.org/abs/nucl-th/0606001
Publikováno v:
Phys.Rev. C69 (2004) 054605
We discuss a quantum effect in the diffusion process by developing a theory, which takes the finite curvature of the potential field into account. The transport coefficients of our theory satisfy the well-known fluctuation-dissipation theorem in the
Externí odkaz:
http://arxiv.org/abs/nucl-th/0402104
Publikováno v:
Phys.Rev. C67 (2003) 022801
Using a semiclassical mean field theory, we show that the screening potential exhibits a characteristic radial variation in the tunneling region in sharp contrast to the assumption of the constant shift in all previous works. Also, we show that the e
Externí odkaz:
http://arxiv.org/abs/nucl-th/0211080
Autor:
Rumin, Tamanna, Takigawa, Noboru
Relativistic mean field calculations suggest that the charge and matter deformations significantly differ in some of the unstable neutron and proton rich nuclei. We discuss the effects of the difference on the fusion reactions induced by them at ener
Externí odkaz:
http://arxiv.org/abs/nucl-th/0206063
Employing time-dependent projection formalism, a Fokker-Planck equation with non-Markovian transport coefficients is derived for large amplitude collective motion. Properties of transport coefficients for diffusion processes in a potential well and a
Externí odkaz:
http://arxiv.org/abs/nucl-th/0203043
The screening effects by bound target electrons in low energy nuclear reactions in laboratory experiments can be well represented in terms of a constant shift of the tunneling potential barrier as postulated in all previous analyses if the electronic
Externí odkaz:
http://arxiv.org/abs/nucl-th/0202073
Publikováno v:
Phys.Rev. C63 (2001) 044603
In heavy-ion fusion reactions involving a well deformed nucleus, one often assumes that the orientation of the target nucleus does not change during the reaction. We discuss the accuracy of this procedure by analyzing the excitation function of the f
Externí odkaz:
http://arxiv.org/abs/nucl-th/0006004
Publikováno v:
Phys.Rev. C61 (2000) 044607
We present analytic expressions of the Coulomb interaction between a spherical and a deformed nuclei which are valid for all separation distance. We demonstrate their significant deviations from commonly used formulae in the region inside the Coulomb
Externí odkaz:
http://arxiv.org/abs/nucl-th/9908071
Publikováno v:
Phys.Rev. C61 (2000) 014605
We study fusion reactions of $^{16}$O with $^{154}$Sm, $^{186}$W and $^{238}$U at sub-barrier energies by a coupled-channels framework. We focus especially on the effects of $\beta_{6}$ deformation and low-lying vibrational excitations of the target
Externí odkaz:
http://arxiv.org/abs/nucl-th/9908006