Publications

Results 101–125 of 303
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Measuring the radiative properties of astrophysical matter using the Z x-ray source

Bailey, James E.; Nagayama, Taisuke N.; Loisel, Guillaume P.; Rochau, G.A.; Blancard, C.B.; Colgan, J.C.; Cosse, Ph.C.; Faussurier, G.F.; Fontes, C.J.F.; Gilleron, F.G.; Golovkin, I.G.; Hansen, Stephanie B.; Iglesias, C.A.I.; Kilcrease, D.P.K.; Macfarlane, Joseph J.; Mancini, Roberto C.; Nahar, S.N.N.; Orban, C.O.; Pain, J.-C.P.; Pradhan, A.K.P.; Sherrill, M.S.; Wilson, B.G.W.

Abstract not provided.

Pre-Heat Optimization for Magnetized Liner Inertial Fusion at Sandia

Geissel, Matthias G.; Harvey-Thompson, Adam J.; Awe, Thomas J.; Bliss, David E.; Glinsky, Michael E.; Gomez, Matthew R.; Harding, Eric H.; Hansen, Stephanie B.; Jennings, Christopher A.; Kimmel, Mark W.; Knapp, Patrick K.; Peterson, Kyle J.; Schollmeier, Marius; Schwarz, Jens S.; Shores, Jonathon S.; Slutz, Stephen A.; Sinars, Daniel S.; Smith, Ian C.; Speas, Christopher S.; Vesey, Roger A.; Weis, Matthew R.; Porter, John L.

Abstract not provided.

Progress in Preconditioning MagLIF fuel and its Impact on Performance

Peterson, Kyle J.; Harvey-Thompson, Adam J.; Awe, Thomas J.; Bliss, David E.; Geissel, Matthias G.; Glinsky, Michael E.; Gomez, Matthew R.; Harding, Eric H.; Hansen, Stephanie B.; Jennings, Christopher A.; Kimmel, Mark W.; Knapp, Patrick K.; Lewis, Sean M.; Schollmeier, Marius; Schwarz, Jens S.; Sefkow, Adam B.; Shores, Jonathon S.; Slutz, Stephen A.; Sinars, Daniel S.; Smith, Ian C.; Speas, Christopher S.; Vesey, Roger A.; Weis, Matthew R.; Porter, John L.

Abstract not provided.

Brief overview of opacity measurements for stellar interior conditions

Bailey, James E.; Nagayama, Taisuke N.; Loisel, Guillaume P.; Rochau, G.A.; Blancard, C.B.; Colgan, J.C.; Cosse, Ph.C.; Faussurier, G.F.; Fontes, C.J.F.; Gilleron, F.G.; Golovkin, I.G.; Hansen, Stephanie B.; Iglesias, C.A.I.; Kilcrease, D.P.K.; Macfarlane, Joseph J.; Mancini, Roberto C.; Nahar, S.N.N.; Orban, C.O.; Pain, J.-C.P.; Pradhan, A.K.P.; Sherrill, M.S.; Wilson, B.G.W.

Abstract not provided.

Systematic measurements of opacity dependence on temperature density and atomic number at stellar interior conditions

Bailey, James E.; Nagayama, Taisuke N.; Loisel, Guillaume P.; Rochau, G.A.; Blancard, C.B.; Colgan, J.C.; Cosse, Ph.C.; Faussurier, G.F.; Fontes, C.J.F.; Gilleron, F.G.; Golovkin, I.G.; Hansen, Stephanie B.; Iglesias, C.A.I.; Kilcrease, D.P.K.; Macfarlane, Joseph J.; Mancini, Roberto C.; Nahar, S.N.N.; Orban, C.O.; Pain, J.-C.P.; Pradhan, A.K.P.; Sherrill, M.S.; Wilson, B.G.W.

Abstract not provided.

Systematic measurements of opacity dependence on temperature density and atomic number at stellar interior conditions

Nagayama, Taisuke N.; Bailey, James E.; Loisel, Guillaume P.; Rochau, G.A.; Blancard, C.B.; Colgan, J.C.; Cosse, Ph.C.; Faussurier, G.F.; Fontes, C.J.F.; Golovkin, I.G.; Hansen, Stephanie B.; Iglesias, C.A.I.; Kilcrease, D.P.K.; MacFarlane, J.J.M.; Mancini, Roberto C.; Nahar, S.N.N.; Orban, C.O.; Pradham, A.K.P.; Sherrill, M.S.; Wilson, B.G.W.

Abstract not provided.

Systematic measurements of opacity dependence on temperature density and atomic number at stellar interior conditions

Bailey, James E.; Nagayama, Taisuke N.; Loisel, Guillaume P.; Rochau, G.A.; Blancard, C.B.; Colgan, J.C.; Cosse, Ph.C.; Faussurier, G.F.; Fontes, C.J.F.; Gilleron, F.G.; Golovkin, I.G.; Hansen, Stephanie B.; Iglesias, C.A.I.; Kilcrease, D.P.K.; Macfarlane, Joseph J.; Mancini, Roberto C.; Nahar, S.N.N.; Orban, C.O.; Pain, J.-C.P.; Pradhan, A.K.P.; Sherrill, M.S.; Wilson, B.G.W.

Abstract not provided.

Developing a Pre-Heat Platform for MagLIF with Z-Beamlet

Geissel, Matthias G.; Awe, Thomas J.; Bliss, David E.; Campbell, Edward M.; Gomez, Matthew R.; Glinsky, Michael E.; Harding, Eric H.; Harvey-Thompson, Adam J.; Hansen, Stephanie B.; Jennings, Christopher A.; Kimmel, Mark W.; Knapp, Patrick K.; Lewis, Sean M.; Peterson, Kyle J.; Schollmeier, Marius; Schwarz, Jens S.; Sefkow, Adam B.; Shores, Jonathon S.; Sinars, Daniel S.; Slutz, Stephen A.; Smith, Ian C.; Speas, Christopher S.; Vesey, Roger A.; Porter, John L.; Rochau, G.A.

Abstract not provided.

Investigating the effect of adding an on-axis jet to Ar gas puff Z pinches on Z

Physics of Plasmas

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

Double-shell Ar gas puff implosions driven by 16.5 ± 0.5 MA on the Z generator at Sandia National Laboratories are very effective emitters of Ar K-shell radiation (photon energy >3 keV), producing yields of 330 ± 9% kJ [B. Jones et al., Phys. Plasmas 22, 020706 (2015)]. Previous simulations and experiments have reported dramatic increases in K-shell yields when adding an on-axis jet to double shell gas puffs for some configurations. We report on a series of experiments on Z testing Ar gas puff configurations with and without an on-axis jet guided by 3D magneto-hydrodynamic (MHD) simulations. Adding an on-axis jet was found to significantly improve the performance of some, but not all, configurations. The maximum observed K-shell yield of 375 ± 9% kJ was produced with a configuration that rapidly imploded onto an on-axis jet. A dramatic difference was observed in the plasma conditions at stagnation when a jet was used, producing a narrower stagnation column in experiments with a higher density but relatively lower electron temperature. The MHD simulations accurately reproduce the experimental measurements. The conversion efficiency for electrical energy delivered to the load to K-shell x-rays is estimated to be ∼12.5% for the best-performing configuration, similar to the best results from experiments at smaller facilities.

More Details

Neutron Diagnostic Development fro the Z Accelerator

Hahn, Kelly D.; Hahn, Kelly D.; Chandler, Gordon A.; Ruiz, Carlos L.; Jones, Brent M.; Gomez, Matthew R.; Knapp, Patrick K.; Sefkow, Adam B.; Hansen, Stephanie B.; Schmit, Paul S.; Harding, Eric H.; Norris, Edward T.; Torres, Jose A.; Cooper, Gary W.; Styron, Jedediah D.; Glebov, V.Yu.; Frenje, J.A.; Lahmann, B.L.; Gatu-Johnson, M.G.; Seguin, F.H.; Petrasso, R.D.; Fittinghoff, D.F.; May, M.M.; Snyder, L.S.; Moy, K.M.; Buckles, R.B.

Abstract not provided.

Overview of Neutron diagnostic measurements for MagLIF Experiments on the Z Accelerator

Hahn, Kelly D.; Chandler, Gordon A.; Ruiz, Carlos L.; Cooper, Gary W.; Gomez, Matthew R.; Slutz, Stephen A.; Sefkow, Adam B.; Sinars, Daniel S.; Hansen, Stephanie B.; Knapp, Patrick K.; Schmit, Paul S.; Harding, Eric H.; Jennings, Christopher A.; Awe, Thomas J.; Geissel, Matthias G.; Rovang, Dean C.; Torres, Jose A.; Bur, James A.; Cuneo, M.E.; Glebov, V.Yu.; Harvey-Thompson, Adam J.; Hess, Mark H.; Johns, Owen J.; Jones, Brent M.; Lamppa, Derek C.; Lash, Joel S.; Martin, Matthew; McBride, Ryan D.; Peterson, Kyle J.; Porter, John L.; Reneker, Joseph R.; Robertson, Grafton K.; Rochau, G.A.; Savage, Mark E.; Smith, Ian C.; Styron, Jedediah D.; Vesey, Roger A.

Abstract not provided.

Results 101–125 of 303
Results 101–125 of 303