Results 61 to 70 of about 130,257 (242)

Parent body thermal metamorphism of enstatite chondrites: Disentangling the effects of shock melting

Meteoritics &Planetary Science, EarlyView.
Abstract Enstatite chondrites (ECs) formed on at least two parent bodies, EH and EL. After the accretion of the EC parent bodies, EC material was subjected to varying degrees of parent body thermal metamorphism (measured by petrologic types 3–6), due to heat released by radioactive isotope decay.
Peter Mc Ardle, Rhian H. Jones, Patricia L. Clay, Romain Tartèse, Ray Burgess, Brian O'Driscoll, Eric W.G. Hellebrand, Jonathan Fellowes, Arthur Goodwin, Lewis Hughes   +9 more
wiley   +1 more source

Reactor neutrons in nuclear astrophysics

EPJ Web of Conferences, 2017
The huge neutron fluxes offer the possibility to use research reactors to produce isotopes of interest, which can be investigated afterwards. An example is the half-lives of long-lived isotopes like 129I.
Reifarth René, Glorius Jan, Göbel Kathrin, Heftrich Tanja, Jentschel Michael, Jurado Beatriz, Käppeler Franz, Köster Ulli, Langer Christoph, Litvinov Yuri A., Weigand Mario   +10 more
doaj   +1 more source

Ultra-sensitive in-beam gamma-ray spectroscopy for nuclear astrophysics at LUNA

, 2008
Ultra-sensitive in-beam gamma-ray spectroscopy studies for nuclear astrophysics are performed at the LUNA (Laboratory for Underground Nuclear Astrophysics) 400 kV accelerator, deep underground in Italy's Gran Sasso laboratory.
A. CACIOLLI, A. FORMICOLA, A. GUGLIELMETTI, A. LEMUT, AND H.P. TRAUTVETTER, B. LIMATA, C. BROGGINI, C. GUSTAVINO, C. ROLFS, C. ROSSI ALVAREZ, D. BEMMERER, E. SOMORJAI, F. CONFORTOLA, F. STRIEDER, F. TERRASI, G. GERVINO, G. IMBRIANI, GY. GYURKY, H. COSTANTINI, L. AGOSTINO, M. JUNKER, M. LAUBENSTEIN, M. MARTA, O. STRANIERO, P. BEZZON, P. CORVISIERO, P. PRATI, R. BONETTI, R. MENEGAZZO, V. LOZZA, V. ROCA, Z. ELEKES, ZS. FULOP   +32 more
core   +1 more source

The effect of pressure on dihedral angle between liquid Fe‐S and orthopyroxene: Implication for percolative core formation in planetesimals and planetary embryos

Meteoritics &Planetary Science, EarlyView.
Abstract During precursor stages of planet formation, many planetesimals and planetary embryos are considered to have differentiated, forming an iron‐alloy core and silicate mantle. Percolation of liquid iron‐alloy in solid silicates is one of the major possible differentiation processes in these small bodies.
Takumi Miura, Hidenori Terasaki, Hyu Takaki, Kotaro Kobayashi, Geoffrey David Bromiley, Takashi Yoshino   +5 more
wiley   +1 more source

Reaction models in nuclear astrophysics

EPJ Web of Conferences, 2016
We present different reaction models commonly used in nuclear astrophysics, in particular for the nucleosynthesis of light elements. Pioneering works were performed within the potential model, where the internal structure of the colliding nuclei is ...
Descouvemont Pierre
doaj   +1 more source

Nucleosynthesis in Type Ia Supernovae, Classical Novae, and Type I X-Ray Bursts. A Primer on Stellar Explosions [PDF]

EPJ Web of Conferences
Nuclear astrophysics aims at unraveling the cosmic origins of chemical elements and the physical processes powering stars. It constitutes a truly multidisciplinary field, that integrates tools, advancements, and accomplishments from theoretical ...
José Jordi
doaj   +1 more source

Nuclear Astrophysics in Rare Isotope Facilities

, 2009
Nuclear reactions in stars are difficult to measure directly in the laboratory at the small astrophysical energies. In recent years indirect methods with rare isotopes have been developed and applied to extract low-energy astrophysical cross sections ...
Alamanos, Austin, Baur, Baur, Bedaque, Bedaque, Bertsch, Bertulani, Bertulani, Bertulani, Bertulani, Bertulani, Bertulani, Blanchon, Bonaccorso, Butler, C.A. Bertulani, Chen, Clement, Esbensen, Esbensen, Esbensen, Gai, Glasmacher, Gregers Hansen, Hansen, Higa, Kong, Korsheninnikov, La Cognata, Lenske, Michel, Motobayashi, Mukhamedzhanov, Navratil, Navratil, Neumaier, Quaglioni, Rupak, Schatz, Steiner, Volya, Watson   +42 more
core   +1 more source

Sulfur‐bearing serpentine in carbonaceous chondrites

Meteoritics &Planetary Science, EarlyView.
Abstract A correlative multi‐technique approach, including electron microscopy and X‐ray synchrotron work, has been used to obtain both structural and compositional information of a sulfur‐bearing serpentine identified in several carbonaceous chondrites (Winchcombe CM2, Aguas Zarcas CM2, Ivuna CI, and Orgueil CI), and in Ryugu samples returned by the ...
N. Topping, J. C. Bridges, L. J. Hicks, L. Petera, C. S. Allen, J. Ryu, D. G. Hopkinson, M. Danaie, L. Blase, F. M. Willcocks, G. Douglas, H. G. Changela, T. Noguchi, T. Matsumoto, A. Miyake   +14 more
wiley   +1 more source

The Nuclear Physics of Neutron Stars

, 2013
We explore the unique and fascinating structure of neutron stars. Although neutron stars are of interest in many areas of Physics, our aim is to provide an intellectual bridge between Nuclear Physics and Astrophysics.
Piekarewicz, J.
core   +1 more source

Nuclear astrophysics with neutrons [PDF]

Journal of Instrumentation, 2012
Neutrons play a crucial role in astrophysics during the heavy element nucleosynthesis. The largest fraction of isotopes heavier than iron is produced by neutron capture processes on short (r process) and long timescales (s process). During the ``slow neutron capture process'' (s process) heavier elements are produced by successive captures of in-situ ...
I Dillmann, R Reifarth
openaire   +1 more source