Results 51 to 60 of about 158,490 (251)

Nuclear data resources and initiatives for nuclear astrophysics

Frontiers in Astronomy and Space Sciences, 2023
Research into the cosmic synthesis of the elements, the evolution and explosion of stars, the nature of the early Universe, and other important topics in nuclear astrophysics are at the forefront of nuclear science.
Michael S. Smith
doaj   +1 more source

Presupernova Structure of Massive Stars

, 2010
Issues concerning the structure and evolution of core collapse progenitor stars are discussed with an emphasis on interior evolution. We describe a program designed to investigate the transport and mixing processes associated with stellar turbulence ...
A. Claret, A. Claret, A. Heger, A. Heger, A. Heger, A. Maeder, A. Mazumdar, A. Nordlund, A. Pietrinferni, A.J.T. Poelarends, A.M. Serenelli, A.S. Endal, C. Aerts, C.A. Meakin, C.A. Meakin, C.A. Meakin, C.A. Meakin, Casey A. Meakin, D. Arnett, D. Arnett, E. Caffau, E.I. Staritsin, F. Herwig, F.J. Robinson, G. Bazán, G. Bertelli, G. Schaller, G. Torres, H.C. Spruit, H.C. Spruit, H.J.S. Fernando, I. Ribas, J. Montalbán, J.A. Guzik, J.C. Suárez, L. Girardi, L. Siess, L.H. Kantha, L.H. Li, M. Briquet, M. Desmet, M. Marconi, M. Mocák, M. Mocák, M. Soriano, M. Steffen, M.-A. Dupret, M.H. Pinsonneault, M.K. Browning, M.M. Hohle, M.P. Mauro Di, N. Langer, P.G. Drazin, P.P. Eggleton, R. Kippenhahn, R. Kuhfuss, R.F. Stein, R.F. Stein, R.G. Deupree, R.L. Gilliland, S. Chandrasekhar, S. Vauclair, S.E. Woosley, S.E. Woosley, S.W. Bruenn, T.M. Rogers, Tuguldur Sukhbold, V.M. Canuto, W. David Arnett, W. Unno, W.D. Arnett, W.J. Merryfield   +71 more
core   +1 more source

Charge State Influence on Stability and Isomerism in Dehydrogenated PAHs: Insights from Anthracene, Acridine, and Phenazine

ChemPhysChem, Volume 26, Issue 6, March 15, 2025.
The ionization of anthracene, acridine, and phenazine has been explored, along with the removal of one and two hydrogen atoms, to provide valuable information for astrochemists and to understand the behavior of the resulting structures and their electronic reorganization. Abstract In this study, we systematically explored the stability and isomerism of
Khaldia Zghida, Farouk Hamza Reguig, Manuel Alcamí, Al Mokhtar Lamsabhi   +3 more
wiley   +1 more source

Temperature‐Dependent Kinetics of Plasma‐Based CO2 Conversion: Interplay of Electron‐Driven and Thermal‐Driven Chemistry

ChemSusChem, Volume 18, Issue 6, March 15, 2025.
The transformation of CO2 into chemical building blocks is essential for a net‐zero energy future. Plasma‐chemical processing offers promising potential to achieve this. Here, we explore a temperature‐dependent plasma‐chemical reaction mechanism, revealing a shift from electron‐driven to thermal‐driven CO2 conversion regimes.
Aswath Mohanan, Ramses Snoeckx, Min Suk Cha   +2 more
wiley   +1 more source

Magnetization of laser-produced plasma in a chiral hollow target

New Journal of Physics, 2017
It is demonstrated that targets with a broken rotational symmetry may facilitate the generation of a strong axial (poloidal) magnetic field. An intense laser beam irradiating such a target creates strong electron currents carrying vorticity and producing
Ph Korneev, V Tikhonchuk, E d’Humières   +2 more
doaj   +1 more source

Unveiling the nature of IGR J16493-4348 with IR spectroscopy [PDF]

, 2010
The International Gamma-Ray Astrophysics Laboratory (INTEGRAL) is discovering a large number of new hard X-ray sources, many of them being HMXBs. The identification and spectral characterization of their optical/infrared counterparts is a necessary step ...
Bird, Carpenter, Clark, Dickey, E. Nespoli, Grebenev, Hanson, Hanson, Hill, J. Fabregat, Kalberla, Kuiper, Markwardt, Moorwood, Morris, Nespoli, Nespoli, Predehl, R. E. Mennickent, Revnivtsev, Rieke, Wegner   +21 more
core   +1 more source

Suprathermal Soliton Solutions to Nonlinear Schrödinger Equation

Contributions to Plasma Physics, EarlyView.
ABSTRACT Maxwell distributions are very difficult to find in the low‐pressure environment far away the Earth atmosphere, permeated by high temperatures, various types of radiation, highly energetic particles, space debris, and subjected to microgravity, presenting crucial challenges for spacecraft design and operations, and affecting astronaut's health.
F. E. M. Silveira, M. H. Benetti, I. L. Caldas   +2 more
wiley   +1 more source

A Laboratory Astrophysics Problem: The Lifetime of Very Long-Lived Levels in Low-Charge Ions

Atoms, 2020
Emission lines of singly charged ions populate many astrophysical spectra. However, the interpretation of the line intensities (usually line ratios) often depends on the transition rates of the decays of very long-lived low-lying levels. For example, the
Elmar Träbert
doaj   +1 more source

Generalized Chemical Model for Warm Dense Hydrogen: Ionization Potential Depression and Molecular Dissociation Shifts

Contributions to Plasma Physics, EarlyView.
ABSTRACT Warm dense matter (WDM) is a complex state, where quantum effects, thermal excitations, and strong interparticle correlations coexist. Understanding its microscopic composition and medium‐induced modifications of atomic and molecular properties is essential for planetary modeling, fusion research, and high‐energy‐density experiments.
L. T. Yerimbetova, Yu. V. Arkhipov, Ye. S. Mukhametkarimov, A. E. Davletov, I. M. Tkachenko   +4 more
wiley   +1 more source

Recent Astrophysics Results from ORELA and Possible Future Experiments at ORELA and SNS

, 2002
I present some recent results from experiments at the Oak Ridge Electron Linear Accelerator (ORELA) and discuss their impact in nuclear astrophysics. I then describe some possible future nuclear astrophysics experiments at ORELA and at the Spallation ...
Koehler, P. E.
core   +1 more source