Publications

Results 26–50 of 204

Search results

Jump to search filters

The effect of adding a center jet to Argon gas puff implosions at the Z facility

Harvey-Thompson, Adam J.; Jennings, Christopher A.; Jones, Brent M.; Ampleford, David A.; Hansen, Stephanie B.; Lamppa, Derek C.; Cuneo, M.E.; Reneker, Joseph R.; Johnson, Drew J.; Jones, Michael J.; Moore, N.W.; Flanagan, Timothy M.; Mckenney, John M.; Rochau, G.A.; Waisman, E.M.; Coverdale, Christine A.; Thornhill, J.W.; Giuliani, J.L.; Chong, Y.K.; Velikovich, A.L.; Dasgupta, A.; Apruzese, John P.

Abstract not provided.

More Details
TYPE Presentation YEAR 2014
DOIOSTI

Signatures of hot electrons and fluorescence in Mo Kα emission on Z

Physics of Plasmas

Hansen, Stephanie B.; Ampleford, David A.; Cuneo, M.E.; Ouart, N.; Jones, Brent M.; Jennings, C.A.; Dasgupta, A.; Coverdale, Christine A.; Rochau, G.A.; Dunham, Gregory S.; Giuliani, J.L.; Apruzese, J.P.

Recent experiments on the Z accelerator have produced high-energy (17 keV) inner-shell K-alpha emission from molybdenum wire array z-pinches. Extensive absolute power and spectroscopic diagnostics along with collisional-radiative modeling enable detailed investigation into the roles of thermal, hot electron, and fluorescence processes in the production of high-energy x-rays. We show that changing the dimensions of the arrays can impact the proportion of thermal and non-thermal K-shell x-rays. © 2014 AIP Publishing LLC.

More Details
TYPE Conference YEAR 2014
ScopusOSTI

Two dimensional RMHD modeling of effective ion temperatures in recent ZR argon experiments

AIP Conference Proceedings

Jones, Brent M.; Giuliani, J.L.; Thornhill, J.W.; Apruzese, J.P.; Harvey-Thompson, Adam J.; Ampleford, David A.; Dasgupta, A.; Jennings, C.A.; Hansen, S.B.; Moore, N.W.; Lamppa, D.C.; Coverdale, Christine A.; Cuneo, M.E.; Rochau, G.A.

Radiation magnetohydrodynamic r-z simulations are performed of recent Ar shots on the refurbished Z generator to examine the effective ion temperature as determined from the observed line width of the He-γ line. While many global radiation properties can be matched to experimental results, the Doppler shifts due to velocity gradients at stagnation cannot reproduce the large experimentally determined width corresponding to an effective ion temperature of 50 keV. Ion viscous heating or magnetic bubbles are considered, but understanding the width remains an unsolved challenge.

More Details
TYPE Conference Poster YEAR 2014
OSTIScopus
Results 26–50 of 204
Results 26–50 of 204