H
Heather D. Whitley
Researcher at Lawrence Livermore National Laboratory
Publications - 49
Citations - 1105
Heather D. Whitley is an academic researcher from Lawrence Livermore National Laboratory. The author has contributed to research in topics: Opacity & Helium. The author has an hindex of 16, co-authored 43 publications receiving 901 citations. Previous affiliations of Heather D. Whitley include New Mexico State University & University of California, Berkeley.
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Journal ArticleDOI
Quantifying electron temperature distributions from time-integrated x-ray emission spectra.
M. J. MacDonald,Duane A. Liedahl,Gregory W. Brown,Daniel Åberg,Dylan Cliche,Mark Foord,Paul E. Grabowski,Robert Heeter,David Hoarty,Richard A. London,M.E. Martin,Joseph Nilsen,Mehul Patel,Howard A. Scott,Ronnie Shepherd,Heather D. Whitley,Klaus Widmann +16 more
TL;DR: In this article , a Markov Chain Monte Carlo (MCMC) sampling of the input parameters was used to assess the uniqueness of the inferred temperature distribution, yielding uncertainties in the fit parameters.
Journal ArticleDOI
Simultaneous compression and opacity data from time-series radiography with a Lagrangian marker
Damian Swift,Andrea Kritcher,James Hawreliak,Jim Gaffney,Amy Lazicki,Andrew MacPhee,Benjamin Bachmann,Tilo Doeppner,Joseph Nilsen,Heather D. Whitley,Gilbert Collins,Siegfried Glenzer,S. D. Rothman,Dominik Kraus,Roger Falcone +14 more
TL;DR: Time-resolved radiography can be used to obtain absolute shock Hugoniot states by simultaneously measuring at least two mechanical parameters of the shock, and the presence of a marker layer in such experiments enables the non-assumed property to be deduced more accurately than from the radiographic density reconstruction alone.
Journal ArticleDOI
Simultaneous compression and opacity data from time-series radiography with a Lagrangian marker.
Damian Swift,Andrea Kritcher,James Hawreliak,Jim Gaffney,Amy Lazicki,Andrew MacPhee,Benjamin Bachmann,Tilo Döppner,Joseph Nilsen,Heather D. Whitley,Gilbert Collins,Siegfried Glenzer,S. D. Rothman,Dominik Kraus,Roger Falcone +14 more
TL;DR: In this paper, a Lagrangian marker is used to constrain the x-ray opacity of one-dimensional converging shocks, where a single experiment probes a range of pressures as the converging shock strengthens.
Journal ArticleDOI
Comparison of ablators for the polar direct drive exploding pusher platform
Heather D. Whitley,G. Elijah Kemp,Charles Yeamans,Zachary B. Walters,Brent Blue,Warren Garbett,Marilyn Schneider,R. Stephen Craxton,E. M. Garcia,P. W. McKenty,Maria Gatu-Johnson,Kyle Caspersen,John I. Castor,Markus Däne,C. Leland Ellison,Jim Gaffney,Frank Graziani,John E. Klepeis,Natalie Kostinski,Andrea Kritcher,Brandon Lahmann,Amy Lazicki,Hai P. Le,Richard A. London,Brian Maddox,M. C. Marshall,Madison E. Martin,Burkhard Militzer,Abbas Nikroo,Joseph Nilsen,Tadashi Ogitsu,John E. Pask,J. Pino,Michael Rubery,Ronnie Shepherd,Philip A. Sterne,Damian Swift,Lin Yang,Shuai Zhang +38 more
TL;DR: In this paper, the authors examined the performance of pure boron, carbide, high density carbon, and high density nitride ablators in the polar direct drive exploding pusher (PDXP) platform, with particular focus on changes to the ablator and gas areal density.
Improved analysis of converging shock radiographs
Damian Swift,Andrea Kritcher,Amy Lazicki,Natalie Kostinski,Brian Maddox,Madison E. Martin,Tilo Doeppner,Joseph Nilsen,Heather D. Whitley +8 more
TL;DR: In this article , a modified method of analysis that is numerically better-conditioned and faster, and usually provides a better representation of the radiograph with correspondingly lower uncertainties.