Results 21 to 30 of about 1,389,487 (295)

Atomic and Molecular Data for Optical Stellar Spectroscopy [PDF]

open access: yes, 2015
High-precision spectroscopy of large stellar samples plays a crucial role for several topical issues in astrophysics. Examples include studying the chemical structure and evolution of the Milky Way galaxy, tracing the origin of chemical elements, and ...
Asplund, M.   +9 more
core   +2 more sources

Uncertainty Estimates for Theoretical Atomic and Molecular Data [PDF]

open access: yes, 2016
Sources of uncertainty are reviewed for calculated atomic and molecular data that are important for plasma modeling: atomic and molecular structure and cross sections for electron-atom, electron-molecule, and heavy particle collisions.
Bartschat, K.   +7 more
core   +2 more sources

Progress on China nuclear data processing code system

open access: yesEPJ Web of Conferences, 2017
China is developing the nuclear data processing code Ruler, which can be used for producing multi-group cross sections and related quantities from evaluated nuclear data in the ENDF format [1]. The Ruler includes modules for reconstructing cross sections
Liu Ping   +7 more
doaj   +1 more source

Atomic Data for PN Analysis [PDF]

open access: yesSymposium - International Astronomical Union, 1997
This paper will review a selection of the work that has been published on the calculation of atomic parameters, relevant to PN, in the period since the 1992 Symposium. It will also attempt to address the accuracy of theoretical results, where possible.
openaire   +1 more source

ATOMIC DATA FOR FUSION [PDF]

open access: yesLe Journal de Physique IV, 1991
The atomic data for fusion needs are described principally from the point of view of diagnostic spectroscopy. Tables are presented of areas of interest and associated atomic data usage. These and the discussion summarise the experience and practice at the JET Joint Undertaking.
Summers, H.   +3 more
openaire   +2 more sources

Development the nuclear decay data sublibrary for fission product [PDF]

open access: yesEPJ Web of Conferences, 2020
Accurate and reliable nuclear decay data libraries are essential for calculation and design of the advanced nuclear systems. To meet the requirements of decay heat calculation, burn-up calculation, analysis neutrino spectra anomaly and the other related ...
Xiaolong Huang   +3 more
doaj   +1 more source

Microscopic optical model potential based on a Dirac Brueckner Hartree Fock approach and the relevant uncertainty analysis

open access: yesEPJ Web of Conferences, 2017
A relativistic microscopic optical model potential, named CTOM, for nucleon-nucleus scattering is investigated in the framework of Dirac-Brueckner-Hartree-Fock approach.
Xu Ruirui   +7 more
doaj   +1 more source

Atomic: an open-source software platform for multi-level corpus annotation [PDF]

open access: yes, 2014
This paper presents Atomic, an open-source platform-independent desktop application for multi-level corpus annotation. Atomic aims at providing the linguistic community with a user-friendly annotation tool and sustainable platform through its focus on ...
Bierkandt, Lennart   +4 more
core   +5 more sources

Measurement and calculation of neutron leakage spectra from slab samples of beryllium, gallium and tungsten irradiated with 14.8 MeV neutrons

open access: yesEPJ Web of Conferences, 2017
In order to make benchmark validation of the nuclear data for gallium (Ga), tungsten (W) and beryllium (Be) in existing modern evaluated nuclear data files, neutron leakage spectra in the range from 0.8 to 15 MeV from slab samples were measured by time ...
Nie Y.B.   +10 more
doaj   +1 more source

Nitrogen K-shell photoabsorption [PDF]

open access: yes, 2009
Reliable atomic data have been computed for the spectral modeling of the nitrogen K lines, which may lead to useful astrophysical diagnostics. Data sets comprise valence and K-vacancy level energies, wavelengths, Einstein $A$-coefficients, radiative and ...
Arav   +37 more
core   +3 more sources

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