Tag Archives: opacities

Comment on “Large enhancement in high-energy photoionization of Fe XVII and missing continuum plasma opacity”

C. Blancard (1), J. Colgan (2), Ph. Cossé (1), G. Faussurier (1), C. J. Fontes (2), F. Gilleron (1), I. Golovkin (3), S. B. Hansen (4*), C. A. Iglesias (5), D. P. Kilcrease (2), J. J. MacFarlane (3), R.M. More … Continue reading

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Model uncertainties of local-thermodynamic-equilibrium K-shell spectroscopy

T. Nagayama (a) , J.E. Bailey (a), R.C. Mancini (b), C.A. Iglesias (c), S.B. Hansen (a), C. Blancard (d), H.K. Chung (e), J. Colgan (f), Ph. Cosse (d), G. Faussurier (d), R. Florido (g), C.J. Fontes (f), F. Gilleron (d), I.E. Golovkin (h), D.P. Kilcrease (f), G. Loisel (a), J.J. … Continue reading

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Configuration interaction effect on open M shell Fe and Ni LTE spectral opacities, Rosseland and Planck means

D Gilles1, M Busquet2, F Gilleron3, M Klapisch4 and J-C Pain3 1 CEA, DSM, IRFU, F-91191 Gif-sur-Yvette, Cedex, France, 2 Research Support Instruments, Lanham, MD 20706, USA, 3 CEA, DAM, DIF, F-91297 Arpajon, France, 4 Berkeley Research Associates, Beltsville, MD 21042, USA We … Continue reading

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Detailed Opacity Comparison for an Improved Stellar Modeling of the Envelopes of Massive Stars

Turck-Chièze, S.; Le Pennec, M.; Ducret, J. E.; Colgan, J.; Kilcrease, D. P.; Fontes, C. J.; Magee, N.; Gilleron, F.; Pain, J. C. AA(CEA/IRFU/SAp, CE Saclay, F-91191 Gif sur Yvette, France Sylvaine.Turck-Chieze@cea.fr), AB(CEA/IRFU/SAp, CE Saclay, F-91191 Gif sur Yvette, France; CEA, DAM, DIF, F-91297 Arpajon, France), AC(CEA/IRFU/SAp, CE Saclay, F-91191 Gif sur Yvette, France; … Continue reading

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Effect of a High Opacity on the Light Curves of Radioactively Powered Transients from Compact Object Mergers

Barnes, Jennifer (1) & Kasen D. (1) ((1) University of California, Berkeley; Lawrence Berkeley National Laboratory) The coalescence of compact objects is a promising source of detectable gravitational wave (GW) signals. The science returns from a GW detection can be … Continue reading

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Light element opacities of astrophysical interest from ATOMIC

James Colgan, D. P. Kilcrease, N. H. Magee, Jr, G. S. J. Armstrong, J. Abdallah, Jr., M. E. Sherrill, C. J. Fontes, H. L. Zhang, P. Hakel, and B. Damski (Los Alamos National Laboratory) We present new calculations of local-thermodynamic-equilibrium … Continue reading

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Comparison of Fe and Ni opacity calculations for a better understanding of pulsating stellar envelopes

D. Gilles (a), S. Turck-Chièze (a), G. Loisel (a), L. Piau (a), J.-E. Ducret (a), M. Poirier (b), T. Blenski (b), F. Thais (b), C. Blancard (c), P. Cossé (c), G. Faussurier (c), F. Gilleron (c), J.C. Pain (c), Q. … Continue reading

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Iron and nickel spectral opacity calculations in conditions relevant for pulsating stellar envelopes and experiments

D. Gilles (1), S. Turck-Chièze (1), M. Busquet (2), F. Thais (3), G. Loisel (4), L. Piau (1), J.E. Ducret (1), T. Blenski (3), C. Blancard (5), P. Cossé (5), G. Faussurier, F. Gilleron (5), J.C. Pain (5), Q. Porcherot (5), J.A. … Continue reading

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New OPAS opacities for a solar mixture

Claudio Mendoza (IVIC/CeCalCULA, Venezuela) In the recent paper  “Solar mixture opacity calculations using detailed configuration and level accounting treatments” by Christophe Blancard (1, 2),  Philippe Cossé (1)  & Gérald Faussurier (1) ((1) CEA, DAM, DIF, F-91297 Arpajon, France;  (2) Observatoire de Paris, … Continue reading

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Photoionization, Photoexcitation, and Astrophysical Opacities: The Iron Project

Sultana N. Nahar (Astronomy Dept., Ohio State University, Columbus, OH 4210, USA) Presentation Radiation transport through astrophysical plasmas is carried out by photon absorptions and emissions by the elements in the plasma and gives a measure of the plasma opacity. The … Continue reading

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