Results 11 to 20 of about 52,754 (240)
Leptonic Photons and Nucleosynthesis [PDF]
Physics Letters B, 1996 Should $U(1)$ long-range forces be associated to electron, muon and/or tau quantum number then their ''fine structure constants" are seen to be bound by nucleosynthesis data to be less than about $1.7 \times 10^{-11}$.
Grifols, J. A., Masso, E.
core +6 more sources
Neutrino Effects in Nucleosynthesis [PDF]
Neutrino Physics, 2000 The nucleosynthesis within a Type II supernova occurs in an intense neutrino flux. I discuss some of the effects associated with neutrino interactions, including direct synthesis in the neutrino process, the role of neutrinos in controlling the r-process
Haxton, W. C.
core +7 more sources
Duration of Nucleosynthesis [PDF]
Physical Review Letters, 1960 In a recent Letter on a determination of the age of the elements, Reynolds[1] reported the important discovery of isotopically anomalous xenon in the stony meteorite Richarton. The isotopes which appear to occur in significant excess over atmospheric xenon are Xe128, Xe129, Xe130, and Xe131, with the Xe129 dominant by an order of magnitude.
G. J. Wasserburg +2 more
openalex +5 more sources
Neutrinos and Primordial Nucleosynthesis [PDF]
Nuclear Physics B - Proceedings Supplements, 2004 The importance of the Big Bang Nucleosynthesis (BBN) as a unique tool for studying neutrino properties is discussed, and the recent steps towards a self-consistent and robust handling of the weak reaction decoupling from the thermal bath as well as of ...
Cuoco +13 more
core +5 more sources
Supernova neutrinos and nucleosynthesis [PDF]
Journal of Physics G: Nuclear and Particle Physics, 2013 Observations of metal-poor stars indicate that at least two different nucleosynthesis sites contribute to the production of r-process elements.
Fischer, T. +2 more
core +4 more sources
Primordial Nucleosynthesis [PDF]
Journal of Physics: Conference Series, 2013 Invited Plenary Talk given at the 11th International Conference on Nucleus-Nucleus Collisions (NN2012), San Antonio, Texas, USA, May 27-June 1, 2012. To appear in the NN2012 Proceedings in Journal of Physics: Conference Series (JPCS)
Coc, Alain, Vangioni, Elisabeth
openaire +18 more sources
Neutrino nucleosynthesis [PDF]
Physics Letters B, 2005 We study neutrino process nucleosynthesis in massive stars using newly calculated cross sections, an expanded reaction network, and complete and self-consistent models of the progenitor star. We reevaluate the production of light isotopes from abundant progenitors as well as that of rare, heavy, proton-rich isotopes.
Heger, A. +5 more
openaire +4 more sources
Hypernovae and their nucleosynthesis [PDF]
Symposium - International Astronomical Union, 2003 We review the characteristics of nucleosynthesis in ‘hypernovae’, i.e., core-collapse supernovae with very large explosion energies (≳ 1052 ergs). The hypernova yields show the following characteristics: (i) the mass ratio between the complete and incomplete Si burning regions is larger in hypernovae than normal supernovae.
Ken'ichi Nomoto +5 more
openaire +3 more sources
Magellanic Clouds Cepheids: Thorium Abundances [PDF]
Journal of Astronomy and Space Sciences, 2018 The analysis of the high-resolution spectra of 31 Magellanic Clouds Cepheid variables enabled the identification of thorium lines. The abundances of thorium were found with spectrum synthesis method. The calculated thorium abundances exhibit correlations
Yeuncheol Jeong +5 more
doaj +1 more source
Prospect for measurements of (γ, n) reaction cross-sections of p-nuclei at ELI-NP
Frontiers in Astronomy and Space Sciences, 2023 The gamma beam system under construction at the ELI-NP facility in Romania is projected to give the nuclear physics community access to an experimental system providing a high-intensity, narrow bandwidth photon beam at variable energy.
P.-A. Söderström +3 more
doaj +1 more source