S
Stephanie Hansen
Researcher at Sandia National Laboratories
Publications - 176
Citations - 5290
Stephanie Hansen is an academic researcher from Sandia National Laboratories. The author has contributed to research in topics: Plasma & Inertial confinement fusion. The author has an hindex of 33, co-authored 165 publications receiving 4295 citations. Previous affiliations of Stephanie Hansen include Lawrence Livermore National Laboratory.
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Journal ArticleDOI
A higher-than-predicted measurement of iron opacity at solar interior temperatures.
James E. Bailey,Taisuke Nagayama,G. Loisel,Gregory Rochau,C. Blancard,James Colgan,Ph. Cosse,G. Faussurier,Christopher J. Fontes,F. Gilleron,Igor Golovkin,Stephanie Hansen,Carlos A. Iglesias,David P. Kilcrease,Joseph J. MacFarlane,Roberto Mancini,Sultana N. Nahar,Chris Orban,Jean-Christophe Pain,Anil K. Pradhan,M. E. Sherrill,Brian G. Wilson +21 more
TL;DR: Measurements of wavelength-resolved iron opacity at electron temperatures and electron densities at the solar radiation/convection zone boundary show that wavelength-dependent opacity is 30–400 per cent higher than predicted, which represents roughly half the change in the mean opacity needed to resolve the solar discrepancy.
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Experimental Demonstration of Fusion-Relevant Conditions in Magnetized Liner Inertial Fusion
Matthew R. Gomez,Stephen A. Slutz,Adam B Sefkow,Daniel Sinars,Kelly Hahn,Stephanie Hansen,Eric Harding,Patrick Knapp,Paul Schmit,Christopher Jennings,Thomas James Awe,M. Geissel,Dean C. Rovang,Gordon A. Chandler,Gary Wayne Cooper,Michael Edward Cuneo,A. J. Harvey-Thompson,Mark Herrmann,M. H. Hess,O. Johns,Derek C. Lamppa,Matthew Martin,Ryan D. McBride,Kyle Peterson,John L. Porter,G. K. Robertson,Gregory Rochau,Carlos L. Ruiz,Mark E. Savage,Ian C. Smith,William A. Stygar,Roger Alan Vesey +31 more
TL;DR: This Letter presents results from the first fully integrated experiments testing the magnetized liner inertial fusion concept, indicating significant fuel magnetization given that the estimated radial areal density of the plasma is only 2 mg = cm(2).
Journal ArticleDOI
Absorption of short laser pulses on solid targets in the ultrarelativistic regime.
Yuan Ping,Ronnie Shepherd,Barbara F. Lasinski,Max Tabak,H. Chen,Hyun-Kyung Chung,K. B. Fournier,Stephanie Hansen,Andreas Kemp,Duane A. Liedahl,Klaus Widmann,Scott Wilks,Wojciech Rozmus,Mark Sherlock +13 more
TL;DR: The first direct measurements of total absorption of short laser pulses on solid targets in the ultrarelativistic regime are reported, showing an enhanced absorption at intensities above 10(20) W/cm(2), reaching 60% for near-normal incidence and 80%-90% for 45 degrees incidence.
Journal ArticleDOI
Advances in NLTE modeling for integrated simulations
TL;DR: In this paper, a simple screened-hydrogenic model was proposed to calculate ionization balance with sufficient accuracy, at a low enough computational cost for routine use in radiation-hydrodynamics codes.
Journal ArticleDOI
Hybrid atomic models for spectroscopic plasma diagnostics
TL;DR: In this article, a hybrid approach is proposed to treat atomic structure and rates in collisional-radiative models, combining the completeness of highly averaged models with the accuracy of detailed models.