Zobrazeno 1 - 10
of 38
pro vyhledávání: '"M. E. Sherrill"'
Publikováno v:
Atoms, Vol 6, Iss 2, p 32 (2018)
In 2015 Los Alamos National Laboratory (LANL) released a new set of OPLIB opacity tables for the elements hydrogen through zinc. The new LANL opacities are publicly available via our website and are already in use by the astrophysics community. In th
Externí odkaz:
https://doaj.org/article/3e5d20260a224f2ca0eae4d92e5519e1
Autor:
Peter Hakel, Joseph Abdallah, D. P. Kilcrease, James Colgan, M. E. Sherrill, Gregory Armstrong, Chris Fontes
Publikováno v:
High Energy Density Physics. 23:133-137
We have begun a preliminary investigation into the opacity of Sn at low temperatures ( n = 4 sub-shells that give rise to the Δ n = 0 transitions that dominate the opacity spectrum at low temperatures. Since calculations that include full configurat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ebb99221123ee421811598f02082c2be
https://doi.org/10.1016/j.hedp.2017.03.009
https://doi.org/10.1016/j.hedp.2017.03.009
Autor:
Kirk Flippo, R. S. Craxton, Todd Urbatsch, Evan Dodd, Tana Cardenas, Barbara Devolder, John Kline, Duane A. Liedahl, Yekaterina Opachich, Mark May, Brian G. Wilson, E. M. Garcia, P. W. Ross, M. A. Barrios, Marilyn Schneider, Carlos A. Iglesias, James E. Bailey, T. N. Archuleta, P. W. McKenty, R. Zhang, E. J. Huffman, Robert Heeter, J. A. King, Gregory Rochau, S. Ayers, T. S. Perry, M. E. Sherrill, J. Emig, M. F. Ahmed
Publikováno v:
High Energy Density Physics. 23:223-227
X-ray opacity is a crucial factor of all radiation-hydrodynamics calculations, yet it is one of the least validated of the material properties in the simulation codes. Recent opacity experiments at the Sandia Z-machine have shown up to factors of two
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::de6d02d69e7f5c27e22e682b2c47b85a
https://doi.org/10.1016/j.hedp.2017.05.006
https://doi.org/10.1016/j.hedp.2017.05.006
Autor:
Roberto Mancini, G. Loisel, F. Gilleron, Joseph J. MacFarlane, Ph. Cosse, Gregory Rochau, Carlos A. Iglesias, Hyun-Kyung Chung, Ricardo Florido, Richard W. Lee, James Colgan, Stephanie Hansen, Taisuke Nagayama, James E. Bailey, Chris Fontes, D. P. Kilcrease, G. Faussurier, M. E. Sherrill, Jean-Christophe Pain, C. Blancard, Igor Golovkin
Publikováno v:
High Energy Density Physics
Local-thermodynamic-equilibrium (LTE) K-shell spectroscopy is a common tool to diagnose electron density, ne, and electron temperature, Te, of high-energy-density (HED) plasmas. Knowing the accuracy of such diagnostics is important to provide quantit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4df5f8cac6ab909de2ddb2e656c33dd2
https://doi.org/10.1016/j.hedp.2016.05.001
https://doi.org/10.1016/j.hedp.2016.05.001
Autor:
M. E. Sherrill, N. H. Magee, Joseph Abdallah, Peter Hakel, D. P. Kilcrease, Hong Lin Zhang, Chris Fontes, James Colgan
Publikováno v:
High Energy Density Physics. 14:33-37
We report on our continued work to produce a new set of local-thermodynamic-equilibrium (LTE) opacity tables using the Los Alamos ATOMIC code. OPLIB tables for the 30 elements from H through Zn are almost complete and are expected to be available in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fac8143dd1945013537370b2a2b152a9
Autor:
Barbara Devolder, James E. Bailey, Evan Dodd, John Kline, R. S. Craxton, M. E. Sherrill, P. W. McKenty, T. S. Perry, Duane A. Liedahl, Gregory Rochau, Carlos A. Iglesias, Yekaterina Opachich, P. W. Ross, Robert Heeter, E. M. Garcia, Marilyn Schneider, J. A. King, E. J. Huffman, R. Zhang, Brian G. Wilson
Publikováno v:
Journal of Plasma Physics. 83
Accurate models of X-ray absorption and re-emission in partly stripped ions are necessary to calculate the structure of stars, the performance of hohlraums for inertial confinement fusion and many other systems in high-energy-density plasma physics.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bd02ff588bc28cdde1d3a7a0f1d62bfe
https://doi.org/10.1017/s0022377816001173
https://doi.org/10.1017/s0022377816001173
Autor:
Peter Hakel, James Colgan, M. E. Sherrill, K. Mussack, Joseph Abdallah, Przemysław Walczak, David P. Kilcrease, Christopher J. Fontes, N. H. Magee, J. A. Guzik
Publikováno v:
AIP Conference Proceedings.
We review a recently completed set of Los Alamos OPLIB opacity tables for the elements hydrogen through zinc. Our tables have been computed using the Los Alamos ATOMIC code, which makes use of atomic structure calculations that include fine-structure
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::308d5f9a22ee45f9e87e067f3a585d7b
https://doi.org/10.1063/1.4975741
https://doi.org/10.1063/1.4975741
Autor:
Joseph Abdallah, M. E. Sherrill, N. H. Magee, Hong Lin Zhang, Chris Fontes, Peter Hakel, Gregory Armstrong, David P. Kilcrease, James Colgan
Publikováno v:
High Energy Density Physics. 9:369-374
We present new calculations of local-thermodynamic-equilibrium (LTE) light element opacities from the Los Alamos ATOMIC code. ATOMIC is a multi-purpose code that can generate LTE or non-LTE quantities of interest at various levels of approximation. A
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0cb1582a622a2785d95fdb3aee98b50d
https://doi.org/10.1016/j.hedp.2013.03.001
https://doi.org/10.1016/j.hedp.2013.03.001
Autor:
M. E. Sherrill, Gérald Faussurier, D. P. Kilcrease, R. M. More, James Colgan, Igor Golovkin, Carlos A. Iglesias, Stephanie Hansen, Ph. Cosse, Brian G. Wilson, C. Blancard, Chris Fontes, Jean-Christophe Pain, F. Gilleron, Joseph J. MacFarlane
Recent R-matrix calculations claim to produce a significant enhancement in the opacity of Fe XVII due to atomic core excitations [S. N. Nahar & A.K. Pradhan, Phys. Rev. Letters 116, 235003 (2016), arXiv:1606.02731] and assert that this enhancement is
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cbf59852d97eb79ecfbb554a92936b81
http://arxiv.org/abs/1608.03512
http://arxiv.org/abs/1608.03512
Autor:
Joyce A. Guzik, M. E. Sherrill, N. H. Magee, Christopher J. Fontes, Joe Abdallah, Peter Hakel, James Colgan, Katie Mussack, David P. Kilcrease
We present a new, publicly available, set of Los Alamos OPLIB opacity tables for the elements hydrogen through zinc. Our tables are computed using the Los Alamos ATOMIC opacity and plasma modeling code, and make use of atomic structure calculations t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a4abb22a991d704b8041b9de71c6eece