Results 51 to 60 of about 24,858 (303)

Nuclear astrophysics in the laboratory and in the universe

AIP Advances, 2014
Nuclear processes drive stellar evolution and so nuclear physics, stellar models and observations together allow us to describe the inner workings of stars and their life stories.
A. E. Champagne, C. Iliadis, R. Longland
doaj   +1 more source

Laboratory Astrophysics Using a Spare XRS Microcalorimeter [PDF]

, 2000
The XRS instrument on Astro-E is a fully self-contained microcalorimeter x-ray instrument capable of acquiring optimally filtering, and characterizing events for 32 independent pixels.
Beiersdorfer, P., Gendreau, K. C., Kevin R. Boyce, Caroline K. Stahle, Steven M. Kahn, Boyce, K. R., Porter, F. S., Gygax, John, Andrew E. Szymkowiak, Audley, M. D., Kelly, Richard L., Kahn, Steve, Brekosky, Regis, Boyce, Kevin R., Frederick S. Porter, Gendreau, Keith C., Michael D. Audley, Peter Beiersdorfer, Gregory V. Brown, Keith C. Gendreau, Kelley, R. L., Richard L. Kelley, Stahle, C. K., Gygax, J., Kahn, S., Brown, Gregory V., Beiersdorfer, Peter, Brown, Gregory, Regis P. Brekosky, Porter, Frederick Scott, Brekosky, R. P., Szymkowiak, A. E., John D. Gygax, Audley, M. Damian, Brown, G. V.   +34 more
core   +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

The Laboratory Astrophysics Spectroscopy Programme at Imperial College London

Galaxies, 2018
Accurate atomic parameters, such as transition probabilities, wavelengths, and energy levels, are indispensable for the analysis of stellar spectra and the obtainment of chemical abundances.
María Teresa Belmonte, Juliet C. Pickering, Christian P. Clear, Florence Concepción Mairey, Florence Liggins   +4 more
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

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

Radiative and Collisional Molecular Data and Virtual Laboratory Astrophysics

Atoms, 2017
Spectroscopy has been crucial for our understanding of physical and chemical phenomena. The interpretation of interstellar line spectra with radiative transfer calculations usually requires two kinds of molecular input data: spectroscopic data (such as ...
Vladimir A. Srećković, Ljubinko M. Ignjatović, Darko Jevremović, Veljko Vujčić, Milan S. Dimitrijević   +4 more
doaj   +1 more source

The Virial Expansion of the Hydrogen Equation of State in Comparison to PIMC Simulations: The Quasiparticle Concept, IPD, and Ionization Degree

Contributions to Plasma Physics, EarlyView.
ABSTRACT The properties of plasmas in the low‐density limit are described by virial expansions. Analytical expressions are known for the lowest virial coefficients from Green's function approaches. Recently, accurate path‐integral Monte Carlo (PIMC) simulations were performed for the hydrogen plasma at low densities by Filinov and Bonitz (Phys. Rev.
Gerd Röpke, Chengliang Lin, W. Ebeling, H. Reinholz   +3 more
wiley   +1 more source

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

Flexible Direct‐Conversion X‐Ray Detectors: From Emerging Materials to Conformal Imaging

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
This comprehensive review analyzed the performance, challenges, and future directions of four emerging material systems for next‐generation flexible direct‐conversion X‐ray detectors: organic semiconductors, perovskites, metal–organic frameworks, and inorganic metal compounds.
Haipeng Di, Guoliang Ma, Jiaxin Mu, Kailian Dong, Haibin Li, Manjing Wang, Xin Song, Haojin Li, Jianwei Xu, Yiying Zhao, Jingjing Zhao, Guojia Fang   +11 more
wiley   +1 more source