Astrophysical reaction rates of <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline" id="d1e6953" altimg="si202.svg"><mml:mi>?</mml:mi></mml:math>-induced reactions for nuclei with <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline" id="d1e6958" altimg="si8.svg"><mml:mrow><mml:mn>26</mml:mn><mml:mo linebreak="goodbreak" linebreakstyle="after">?</mml:mo><mml:mi>Z</mml:mi><mml:mo linebreak="goodbreak" linebreakstyle="after">?</mml:mo><mml:mn>83</mml:mn…
نویسندگان
چکیده
The new Atomki-V2 ?-nucleus potential is applied to calculate astrophysical reaction rates NA??v? of intermediate mass and heavy target nuclei from iron (Z=26) up bismuth (Z=83). Overall, ?-induced reactions are provided for 4359 nuclei, covering as well neutron-deficient extremely neutron-rich the proton neutron dripline. Contrary previous rate compilations, these calculations include all relevant exit channels with dominating (?, xn) nuclei.
منابع مشابه
Indirect methods for astrophysical reaction rates
Capture reactions can be a technical challenge in the energy region of astrophysical interest. Alternative experimental techniques were developed making use of beams available at higher energies. Although they have been widely applied, these indirect methods have long called for theoretical validation. In this work we discuss the use of transfer and breakup reactions as astrophysical tools. We ...
متن کاملRelevant energy ranges for astrophysical reaction rates
Effective energy windows (Gamow windows) of astrophysical reaction rates for (p,γ), (p,n), (p,α), (α,γ), (α,n), (α,p), (n,γ), (n,p), and (n,α) on targets with 10 ≤ Z ≤ 83 from protonto neutrondripline are calculated using theoretical cross sections. It is shown that widely used approximation formulae for the relevant energy ranges are not valid for a large number of reactions relevant to hydros...
متن کاملAstrophysical Reaction Rates as a Challenge for Nuclear Reaction Theory
The relevant energy ranges for stellar nuclear reactions are introduced. Low-energy compound and direct reactions are discussed. Stellar modifications of the cross sections are presented. Implications for experiments are outlined.
متن کاملCalculations of Nuclear Reactions of Astrophysical Interest Involving Unstable Nuclei
Nuclear reactions involving unstable nuclei play an important role in nucleosyn-thesis. Such reactions are mainly associated with explosive astrophysical scenarios occurring at the nal stages of stellar evolution. For many nuclear reactions involving unstable nuclei the direct reaction mechanism cannot be neglected and may even be the dominant reaction mechanism. For example, the direct{reactio...
متن کاملNuclear Reactions of Astrophysical Interest Involving Light Nuclei
An introduction to nucleosynthesis, the creation of the elements in the big bang, in interstellar matter and in stars is given. The two–step process He(2n,γ)He and the reverse photodisintegration He(γ,2n)He involving the halo nucleus He could be of importance in the α–process in type–II supernovae. The reaction rates for the above processes are calculated using three–body methods and show an en...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Atomic Data and Nuclear Data Tables
سال: 2021
ISSN: ['0092-640X', '1090-2090']
DOI: https://doi.org/10.1016/j.adt.2021.101453