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Adaptive Beam Smoothing with Plasma-Pinholes for Laser-Entrance-Hole Transmission Studies

Geissel, Matthias; Awe, Thomas J.; Campbell, Edward M.; Gomez, Matthew R.; Harding, Eric H.; Harvey-Thompson, Adam J.; Jennings, Christopher A.; Kimmel, Mark; Lewis, Sean M.; Mcbride, Ryan; Peterson, K.J.; Schollmeier, Marius; Sefkow, Adam B.; Shores, Jonathon; Sinars, Daniel; Slutz, Stephen A.; Smith, Ian C.; Speas, Christopher S.; Stahoviak, John W.; Porter, John L.

Abstract not provided.

Experimental demonstration of fusion-relevant conditions in magnetized liner inertial fusion

Physical Review Letters

Gomez, Matthew R.; Jennings, Christopher A.; Awe, Thomas J.; Geissel, Matthias; Rovang, Dean C.; Chandler, Gordon A.; Cuneo, Michael E.; Harvey-Thompson, Adam J.; Herrmann, Mark H.; Hess, Mark H.; Slutz, Stephen A.; Johns, Owen; Lamppa, Derek C.; Martin, Matthew R.; Mcbride, Ryan; Peterson, K.J.; Robertson, G.K.; Rochau, G.A.; Ruiz, Carlos L.; Savage, Mark E.; Sefkow, Adam B.; Smith, Ian C.; Stygar, William A.; Vesey, Roger A.; Sinars, Daniel; Hahn, Kelly; Hansen, Stephanie B.; Harding, Eric H.; Knapp, P.F.; Schmit, Paul

This Letter presents results from the first fully integrated experiments testing the magnetized liner inertial fusion concept [S.A. Slutz et al., Phys. Plasmas 17, 056303 (2010)], in which a cylinder of deuterium gas with a preimposed axial magnetic field of 10 T is heated by Z beamlet, a 2.5 kJ, 1 TW laser, and magnetically imploded by a 19 MA current with 100 ns rise time on the Z facility. Despite a predicted peak implosion velocity of only 70 km/s, the fuel reaches a stagnation temperature of approximately 3 keV, with Te ≈ Ti, and produces up to 2e12 thermonuclear DD neutrons. In this study, X-ray emission indicates a hot fuel region with full width at half maximum ranging from 60 to 120 μm over a 6 mm height and lasting approximately 2 ns. The number of secondary deuterium-tritium neutrons observed was greater than 1010, indicating significant fuel magnetization given that the estimated radial areal density of the plasma is only 2 mg/cm2.

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Two-dimensional RMHD modeling assessment of current flow plasma conditions and Doppler effects in recent Z argon experiments

Jones, Brent M.; J W, Thornhill; Giuliani, J.L.; Apruzese, John P.; Dasgupta, A.; Chong, Y.K.; Harvey-Thompson, Adam J.; Ampleford, David J.; Hansen, Stephanie B.; Coverdale, Christine A.; Jennings, Christopher A.; Rochau, G.A.; Cuneo, Michael E.; Lamppa, Derek C.; Johnson, Drew; Jones, Michael; Moore, Nathan W.; Waisman, Eduardo M.; Krishnan, M.; Coleman, P.L.

Abstract not provided.

Demonstration of fusion relevant conditions in Magnetized Liner Inertial Fusion Experiments on the Z Facility

Gomez, Matthew R.; Slutz, Stephen A.; Sefkow, Adam B.; Sinars, Daniel; Hahn, Kelly; Hansen, Stephanie B.; Harding, Eric H.; Knapp, P.F.; Schmit, Paul; Jennings, Christopher A.; Awe, Thomas J.; Geissel, Matthias; Rovang, Dean C.; Chandler, Gordon A.; Cuneo, Michael E.; Harvey-Thompson, Adam J.; Herrmann, Mark H.; Lamppa, Derek C.; Martin, Matthew R.; Mcbride, Ryan; Peterson, K.J.; Porter, John L.; Rochau, G.A.; Ruiz, Carlos L.; Savage, Mark E.; Smith, Ian C.; Vesey, Roger A.

Abstract not provided.

Demonstration of fusion relevant conditions in Magnetized Liner Inertial Fusion experiments on the Z facility

Gomez, Matthew R.; Slutz, Stephen A.; Sefkow, Adam B.; Sinars, Daniel; Hahn, Kelly; Hansen, Stephanie B.; Harding, Eric H.; Knapp, P.F.; Schmit, Paul; Jennings, Christopher A.; Awe, Thomas J.; Geissel, Matthias; Rovang, Dean C.; Chandler, Gordon A.; Cuneo, Michael E.; Harvey-Thompson, Adam J.; Herrmann, Mark H.; Lamppa, Derek C.; Martin, Matthew R.; Mcbride, Ryan; Peterson, K.J.; Porter, John L.; Rochau, G.A.; Ruiz, Carlos L.; Savage, Mark E.; Smith, Ian C.; Vesey, Roger A.

Abstract not provided.

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 J.; Hansen, Stephanie B.; Lamppa, Derek C.; Cuneo, Michael E.; Reneker, Joseph; Johnson, Drew; Jones, Michael; Moore, N.W.; Flanagan, Timothy M.; Mckenney, John; 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.

Results Progress and Plans for Magnetized Liner Inertial Fusion (MagLIF) on Z

Peterson, K.J.; Slutz, Stephen A.; Sinars, Daniel; Sefkow, Adam B.; Gomez, Matthew R.; Awe, Thomas J.; Harvey-Thompson, Adam J.; Geissel, Matthias; Schmit, Paul; Smith, Ian C.; Mcbride, Ryan; Rovang, Dean C.; Knapp, P.F.; Hansen, Stephanie B.; Jennings, Christopher A.; Harding, Eric H.; Porter, John L.; Vesey, Roger A.; Blue, Brent E.; Schroen, Diana G.; Tomlinson, Kurt

Abstract not provided.

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 J.; 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.

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Results 151–175 of 179
Results 151–175 of 179