Results 41 to 50 of about 53,561 (244)

Nuclear reactions involving light elements & BBN [PDF]

open access: yesEPJ Web of Conferences
Light elements play a key role in different scenario in astrophysics, ranging from primordial nucleosynthesis up to stellar nucleosynthesis and cosmic ray nucleosynthesis.
Lamia L.
doaj   +1 more source

Neutron-Driven Nucleosynthesis in Stellar Plasma

open access: yesFrontiers in Physics, 2022
A large uncertainty for the slow neutron capture nucleosynthesis (s-process) models is caused by the amount of neutrons available to the process itself.
R. Spartà   +24 more
doaj   +1 more source

Big bang nucleosynthesis [PDF]

open access: yesNuclear Physics B - Proceedings Supplements, 1999
The concordance of standard big bang nucleosynthesis theory and the related observations of the light element isotopes (including some new higher \he4 abundances) will be reviewed. Implications of BBN on chemical evolution, dark matter and constraints on particle properties will be discussed.
openaire   +4 more sources

Design study of a HPGe detector array for β-decay investigation in laboratory ECR plasmas

open access: yesFrontiers in Physics, 2022
In the frame of the PANDORA project, a new experimental approach aims at measuring in-plasma β-decay rate as a function of thermodynamical conditions of the environment, namely a laboratory magnetized plasma able to mimic some stellar-like conditions ...
Eugenia Naselli   +12 more
doaj   +1 more source

Non-universal scalar-tensor theories and big bang nucleosynthesis [PDF]

open access: yes, 2008
We investigate the constraints that can be set from big-bang nucleosynthesis on two classes of models: extended quintessence and scalar-tensor theories of gravity in which the equivalence principle between standard matter and dark matter is violated.
Alain Coc   +12 more
core   +3 more sources

Nucleosynthesis in classical novae [PDF]

open access: yesNuclear Physics A, 2001
A general review of the relevance of classical novae for the chemical evolution of the Galaxy, as well as for Galactic radioactivity is presented. A special emphasis is put on the pioneering work done by Jim Truran in this field of research. The impact of recent developments in nuclear astrophysics on nova nucleosynthesis, together with the prospects ...
Hernanz, M., Jose, J., Coc, A.
openaire   +3 more sources

Isomers in the Cosmos

open access: yesAtoms, 2023
The nucleosynthesis of chemical elements has been established to be the result of a variety of different types of nuclear reactions in stars. Under the extreme temperatures and densities encountered in such environments, nuclear isomers can be populated ...
Eric B. Norman
doaj   +1 more source

Mixing Uncertainties in Low-Metallicity AGB Stars: The Impact on Stellar Structure and Nucleosynthesis

open access: yesUniverse, 2021
The slow neutron-capture process (s-process) efficiency in low-mass AGB stars (1.5 < M/M⊙ < 3) critically depends on how mixing processes in stellar interiors are handled, which is still affected by considerable uncertainties.
Umberto Battino   +4 more
doaj   +1 more source

Insights into AGB Nucleosynthesis Thanks to Spectroscopic Abundance Measurements in Intrinsic and Extrinsic Stars

open access: yesUniverse, 2022
The foundations of stellar nucleosynthesis have been established more than 70 years ago. Since then, much progress has been made, both on the theoretical side, with stellar evolution and nucleosynthesis models of increasing complexity, using more and ...
Sophie Van Eck   +2 more
doaj   +1 more source

Direct reactions for astrophysical p-capture rates with ORRUBA and GODDESS

open access: yesFrontiers in Physics
Understanding the nucleosynthesis and energy generation in quiescent and explosive stellar burning requires a detailed understanding of reaction rates on many unstable nuclides.
S. D. Pain
doaj   +1 more source

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