Results 41 to 50 of about 21,814 (256)

Prospect for measurements of (γ, n) reaction cross-sections of p-nuclei at ELI-NP

open access: yesFrontiers 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

Kinetics of the tautomerization of thioimidic acids R−C(SH)NH → R−C(S)NH2: For R = H, F, HO, CN, NC, H2N, HC(O), HC(S), HC≡ C, CH3, CF3, H2C=CH, HOCH2, H2NCH2,CH3C(O), C2H5, (CH3)2CH, C6H5

open access: yesInternational Journal of Chemical Kinetics, Volume 55, Issue 11, Page 731-742, November 2023., 2023
Abstract The kinetics of the tautomerization of thio‐imidic acids RC(SH)NH were determined at low (50–300 K) and high (500–1500 K) temperatures as R was varied to encompass mono‐ and diatomic species H, F, HO, NC, CN through H2N, HC(O), HC(S), HC≡ C, H3C, F3C, HOCH2, H2C=CH, CH3C(O), H2NCH2 and including ethyl, isopropyl and phenyl groups. The presence
Judith Würmel, John M. Simmie
wiley   +1 more source

Updating constraints on f(T) teleparallel cosmology and the consistency with big bang nucleosynthesis [PDF]

open access: yes, 2020
We focus on viable f(T) teleparallel cosmological models, namely power law, exponential and square-root exponential, carrying out a detailed study of their evolution at all scales.
M. Benetti, S. Capozziello, G. Lambiase
semanticscholar   +1 more source

Presupernova Evolution and Explosive Nucleosynthesis of Rotating Massive Stars in the Metallicity Range −3 ≤ [Fe/H] ≤ 0 [PDF]

open access: yesAstrophysical Journal Supplement Series, 2018
We present a new grid of presupernova models of massive stars extending in mass between 13 and 120 , covering four metallicities (i.e., [Fe/H] = 0, −1, −2, and −3) and three initial rotation velocities (i.e., 0, 150, and 300 km s−1).
M. Limongi, A. Chieffi
semanticscholar   +1 more source

Fast neutrino flavor conversion, ejecta properties, and nucleosynthesis in newly-formed hypermassive remnants of neutron-star mergers [PDF]

open access: yes, 2020
Neutrinos emitted in the coalescence of two neutron stars affect the dynamics of the outflow ejecta and the nucleosynthesis of heavy elements. In this work, we analyze the neutrino emission properties and the conditions leading to the growth of flavor ...
M. George   +4 more
semanticscholar   +1 more source

Primordial Nucleosynthesis [PDF]

open access: yesJournal 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)
openaire   +12 more sources

Mergers of Binary Neutron Star Systems: A Multimessenger Revolution

open access: yesFrontiers in Astronomy and Space Sciences, 2021
On August 17, 2017, less than two years after the direct detection of gravitational radiation from the merger of two∼30 M⊙ black holes, a binary neutron star merger was identified as the source of a gravitational wave signal of ∼100 s duration that ...
Elena Pian
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

Nucleosynthesis in magneto-rotational supernovae [PDF]

open access: yesMonthly notices of the Royal Astronomical Society, 2020
We present the nucleosynthesis of magneto-rotational supernovae (MR-SNe) including neutrino-driven and magneto-rotational-driven ejecta based, for the first time, on two-dimensional simulations with accurate neutrino transport. The models analysed here
M. Reichert   +4 more
semanticscholar   +1 more source

Nucleosynthesis and Kilonovae from Strange Star Mergers

open access: yesUniverse, 2019
In this talk, we summarize the work in progress toward a full characterization of strange star−strange star (SS−SS) mergers related to the GW/GRB/kilonova events.
J. E. Horvath   +5 more
doaj   +1 more source

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