Results 51 to 60 of about 13,537 (199)

Neutron-Driven Nucleosynthesis in Stellar Plasma

Frontiers 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, M. La Cognata, G. L. Guardo, G. L. Guardo, S. Palmerini, S. Palmerini, M. L. Sergi, M. L. Sergi, G. D’Agata, G. D’Agata, L. Lamia, L. Lamia, L. Lamia, D. Lattuada, D. Lattuada, A. A. Oliva, A. A. Oliva, R. G. Pizzone, G. G. Rapisarda, G. G. Rapisarda, S. Romano, S. Romano, S. Romano, A. Tumino, A. Tumino   +24 more
doaj   +1 more source

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

Frontiers 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, Domenico Santonocito, Simone Amaducci, Luigi Celona, Alessio Galatà, Alain Goasduff, Giorgio Sebastiano Mauro, Maria Mazzaglia, Bharat Mishra, Daniel R. Napoli, Angelo Pidatella, Giuseppe Torrisi, David Mascali   +12 more
doaj   +1 more source

Asymmetrical thermonuclear supernovae triggered by the tidal disruption of white dwarfs

Astronomy & Astrophysics
In a dense star cluster core, a tidal disruption event (TDE) of a white dwarf (WD) can occur if the WD passes within the tidal radius of an intermediate-mass black hole (IMBH).
Vynatheya Pavan, Dessart Luc, Ryu Taeho, Pakmor Rüdiger   +3 more
doaj   +1 more source

Isomers in the Cosmos

Atoms, 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

The stellar origins of 96Zr excesses in presolar graphites from the Murchison meteorite

Astronomy & Astrophysics
Context. Zirconium-96 is a stable isotope that can be synthesized under different neutron-rich nucleosynthetic conditions. Astrophysical models predict its production to occur in various stellar environments: from low-to-intermediate-mass asymptotic ...
Pal I., Jadhav M., Shulaker D. Z., Raiwa M., Savina M. R., Bouillion H., Pignatari M., Roberti L., Lugaro M., Szányi B., Karakas A., Denissenkov P., Herwig F., Dory C. J., Gyngard F., Kita N., Amari S.   +16 more
doaj   +1 more source

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

Universe, 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, Claudia Lederer-Woods, Borbála Cseh, Pavel Denissenkov, Falk Herwig   +4 more
doaj   +1 more source

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

Universe, 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, Shreeya Shetye, Lionel Siess   +2 more
doaj   +1 more source

No crisis for big bang nucleosynthesis [PDF]

Physical Review D, 1996
Contrary to a recent claim, the inferred primordial abundances of the light elements are quite consistent with the expectations from standard big bang nucleosynthesis when attention is restricted to direct observations rather than results from chemical evolution models.
Kernan, P, Sarkar, S
openaire   +3 more sources

Studies of 20 < A < 30 Nucleosynthesis in AGB Stars and Novae [PDF]

, 2007
In this thesis, a variety of topics are investigated. Part I discusses asymptotic giant branch (AGB) stars. We review their evolution and their contribution to the galactic chemical evolution.
Setoodehnia, Kiana
core  

Principles of cold nucleosynthesis.

, 2021
Modern science denies the possibility of nucleosynthesis at room temperatures, considering this process as part of high temperature physics and plasma physics. However, if you look at the problem from the other side, using the concepts of low temperature
Serge Shavirin (3945863)
core   +1 more source