Zobrazeno 1 - 10
of 65
pro vyhledávání: '"Csoto, Attila"'
Autor:
Csoto, Attila
Publikováno v:
Few Body Syst.Suppl. 13 (2000) 111-121
We have localized several few-body resonances in light nuclei, using methods which can properly handle two- or three-body resonant states. Among other results, we predict the existence of a three-neutron resonance, small spin-orbit splittings between
Externí odkaz:
http://arxiv.org/abs/nucl-th/0010105
Autor:
Csoto, Attila
We show that nuclear states lying at the edge of stability may show enormously enhanced response to small perturbations. For example, a 0.1% change in the strength of the strong nucleon-nucleon interaction can cause almost a hundred times bigger chan
Externí odkaz:
http://arxiv.org/abs/nucl-th/0010050
Autor:
Csoto, Attila, Langanke, Karlheinz
Publikováno v:
Nucl.Phys. A688 (2001) 511-513
We have studied the 4He(3He,gamma)7Be, 3He(3He,2p)4He, and 7Be(p,gamma)8B reactions of the solar p-p chain, using microscopic cluster models. Among other results, we showed that the 6Li+p channel has a nontrivial effect on the 7Be-producing reaction,
Externí odkaz:
http://arxiv.org/abs/nucl-th/0010053
Publikováno v:
Nucl.Phys. A688 (2001) 560-562
We show that the synthesis of carbon and oxygen through the triple-alpha process in red giant stars is extremely sensitive to the fine details of the nucleon-nucleon (N-N) interaction. A +/-0.5% change in the strength of the N-N force would reduce ei
Externí odkaz:
http://arxiv.org/abs/nucl-th/0010052
Publikováno v:
Nucl.Phys. A689 (2001) 269-279
In nucleosynthesis three possible paths are known to bridge the mass gaps at A=5 and A=8. The primary path producing the bulk of the carbon in our Universe proceeds via the triple-alpha process He4(2alpha,gamma)C12. This process takes place in helium
Externí odkaz:
http://arxiv.org/abs/nucl-th/0009046
Publikováno v:
Science 289 (2000) 88
The bulk of the carbon in our universe is produced in the triple-alpha process in helium-burning red giant stars. We calculated the change of the triple-alpha reaction rate in a microscopic 12-nucleon model of the C-12 nucleus and looked for the effe
Externí odkaz:
http://arxiv.org/abs/astro-ph/0007178
Autor:
Csoto, Attila
Publikováno v:
Phys.Rev. C61 (2000) 037601
In standard potential-model descriptions of the Be7(p,gamma)B8 reaction the Be7+p spectroscopic factors S appear in the cross section. We argue that the microscopic substructure effects which are represented by S are short-ranged and cannot affect th
Externí odkaz:
http://arxiv.org/abs/nucl-th/9908082
Autor:
Csoto, Attila
Publikováno v:
Phys.Rev. C61 (2000) 024311
We search for low-lying resonances in the B8 and Li8 nuclei using a microscopic cluster model and a variational scattering method, which is analytically continued to complex energies. After fine-tuning the nucleon-nucleon interaction to get the known
Externí odkaz:
http://arxiv.org/abs/nucl-th/9908081
Through the triple-alpha process occurring in red giant stars the bulk of the carbon existing in our universe is produced. We calculated the change of the triple-alpha reaction rate for slight variations of the nucleon-nucleon force using a microscop
Externí odkaz:
http://arxiv.org/abs/astro-ph/9908247
Autor:
Csoto, Attila, Langanke, Karlheinz
Publikováno v:
Few Body Syst. 29 (2000) 121-130
The He3(He4,gamma)Be7 and H3(He4,gamma)Li7 reactions are studied in an extended two-cluster model which contains alpha+h/t and Li6+p/n clusterizations. We show that the inclusion of the Li6+p/n channels can significantly change the zero-energy reacti
Externí odkaz:
http://arxiv.org/abs/nucl-th/9906053