Results 101 to 110 of about 13,955 (228)

PRIMORDIAL NUCLEOSYNTHESIS REDUX

The Astrophysical Journal, 1991
The abundances of D, He-3, He-4, and Li-7, are presently recalculated within the framework of primordial nucleosynthesis in the standard hot big band model, in order to estimate the primordial abundances of the light elements. A comparison between theory and experiment demonstrates the consistency of standard model predictions; the baryon density ...
Terry P. Walker, Gary Steigman, Ho-Shik Kang, David M. Schramm, Keith A. Olive   +4 more
openaire   +1 more source

Precise Measurement of Magnesium Isotopes in Fe‐Mg Minerals Using a Multi‐collector SHRIMP Ion Microprobe

Geostandards and Geoanalytical Research, Volume 48, Issue 2, Page 331-343, June 2024.
Key Points Corrected for the Earth's magnetic field, the SHRIMP's IMF depends on the mineral species, not the chemical composition. The IMF arises from the force constant difference between "hard" and "soft" bonds, which is characteristic of each mineral. This permitted the calculation of IMF‐correction factors for most common Mg‐bearing minerals.
Fernando Bea, Pilar Montero, Delia Ortega, José F. Molina, Aitor Cambeses, Leticia Barcos, Shui‐Jiong Wang, Shan Ke   +7 more
wiley   +1 more source

IDL galactic chemical history tool for nucleosynthesis

, 2019
<p>IDL galactic chemical history tool for nucleosynthesis</p ...
West, Christopher, West, Christopher (6531296)   +1 more
core   +1 more source

Direct and Indirect Measurements of the ¹⁹F(p,α)¹⁶O Reaction at Astrophysical Energies Using the LHASA Detector and the Trojan Horse Method

Universe
Fluorine is one of the most interesting elements in nuclear astrophysics. Its abundance can provide important hints to constrain the stellar models since fluorine production and destruction are strictly connected to the physical conditions inside the ...
Giovanni L. Guardo, Giuseppe G. Rapisarda, Dimiter L. Balabanski, Giuseppe D’Agata, Alessia Di Pietro, Pierpaolo Figuera, Marco La Cognata, Marco La Commara, Livio Lamia, Dario Lattuada, Catalin Matei, Marco Mazzocco, Alessandro A. Oliva, Sara Palmerini, Teodora Petruse, Rosario G. Pizzone, Stefano Romano, Maria Letizia Sergi, Roberta Spartá, Xuedou Su, Aurora Tumino, Nikola Vukman   +21 more
doaj   +1 more source

New Results on Nucleosynthesis in Massive Stars; Nuclear Data Needs for

, 2001
Introduction Second only in scientific interest to the origin of the universe itself is the origin of the chemical elements therein. The near term goal of nuclear origins, or nucleosynthesis, seeks to develop a complete understanding of the origin of ...
Stan Woosley, Nucleosynthesis Robert Hoffman, Thomas Rauscher, Alex Heger, Robert Hoffman   +4 more
core  

Matter-enhanced antineutrino flavor transformation and supernova nucleosynthesis [PDF]

, 1995
Matter-enhanced antineutrino flavor transformation between ν̄e and ν̄μ(τ) can occur in supernovas if the vacuum masses for these species satisfy mν̄e>mν̄μ(τ).
Qian, Yong-Zhong, Fuller, George M, Yong-Zhong Qian, George M. Fuller   +3 more
core   +1 more source

Production of Lithium and Heavy Elements in AGB Stars Experiencing PIEs

Galaxies
Asymptotic giant branch (AGB) stars can experience proton ingestion events (PIEs), leading to a rich nucleosynthesis. During a PIE, the intermediate neutron capture process (i-process) develops, leading to the production of trans-iron elements.
Arthur Choplin, Lionel Siess, Stephane Goriely, Sebastien Martinet   +3 more
doaj   +1 more source

Nuclear reactions for nucleosynthesis beyond Fe [PDF]

, 2015
Many more nuclear transitions have to be known in the determination of stellar reactivities for trans-iron nucleosynthesis than for reactions of light nuclei. This requires different theoretical and experimental approaches.
Rauscher, Thomas, Thomas Rauscher
core   +1 more source

Galactic cosmic rays and nucleosynthesis

, 2009
International audienceThe nucleosynthesis of the light elements Li, Be and B by galactic cosmic rays is presented. Observations of cosmic rays and the nuclear reactions responsible for Li, Be and B nucleosynthesis are described, followed by some words on
Kiener, J., Jürgen Kiener, Claudi Spitaleri, Rosario G. Pizzone, Claus Rolfs   +4 more
core   +1 more source

Nucleosynthesis constraints through

, 2021
Context. Classical novae belong to the most frequent transient events in the Milky Way and are key agents of ongoing nucleosynthesis. Despite their large numbers, they have never been observed in soft γ-ray emission.
Akshay Yeddanapudi, Thomas Siegert, Sohan Ghosh, Ethan Spraggon, Kalp Mathur   +4 more
core   +1 more source