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Author: Lemke, R.W.

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Impact of Time-Varying Loads on the Programmable Pulsed Power Driver Called Genesis

2012 / IEEE
By: Hodge, K.C.; Lemke, R.W.; Hanshaw, H.L.; Hall, C.A.; Hickman, R.J.; Pena, G.E.; Reed, K.W.; Schneider, L.X.; Davis, J.-P.; Glover, S.F.; Johnson, W.A.; Coats, R.S.; Warne, L.K.; White, F.E.; Van De Valde, D.M.; Tullar, S.J.; Sceiford, M.E.; Rudys, J.M.; Puissant, J.G.; McDaniel, D.H.; Lucero, D.J.; Lehr, J.M.;

Status of Genesis a 5-MA Programmable Pulsed Power Driver

2012 / IEEE
By: Glover, S.F.; Van De Valde, D.M.; Foster, P.J.; Lucero, D.J.; Schneider, L.X.; Reed, K.W.; Pena, G.E.; Davis, J.; Hall, C.A.; Hickman, R.J.; Hodge, K.C.; Lemke, R.W.; Lehr, J.M.; McDaniel, D.H.; Puissant, J.G.; Rudys, J.M.; Sceiford, M.E.; Tullar, S.J.; White, F.E.;

Research on a 1.3 GHz annular electron beam powered multi-gigawatt microwave amplifier

1992 / IEEE / 000-0-0000-0000-0
By: Fayne, W.R.; Hendricks, K.J.; Lemke, R.W.; Clark, M.C.; Bowers, L.A.; Platt, R.C.; Haworth, M.D.; Davis, C.E.;

Advances in pulsed power and MHD technology to enable high pressure material dynamics studies

2004 / IEEE / 978-5-87911-088-3
By: Harjes, C.; Lemke, R.W.; Knudson, M.D.; Pointon, T.D.; Hall, C.A.; Bliss, D.E.; Davis, J.-P.; Deeney, C.;

Experiments to characterize a >100 keV, high resolution X-ray backlighter for cylindrical imploding liners at the Z machine

2011 / IEEE / 978-1-61284-329-2
By: Flicker, D.G.; Oliver, B.V.; Geissel, M.; Webb, T.J.; Miller, C.L.; Campbell, R.B.; Lemke, R.W.;

The split-cavity oscillator: a high-power E-beam modulator and microwave source

1992 / IEEE
By: Clark, M.C.; Marder, B.M.; Coleman, P.D.; Lemke, R.W.; Hoffman, J.M.; Bacon, L.D.;

Advances in the understanding of efficient operation of high power backward-wave oscillators

1995 / IEEE / 0-7803-2669-5
By: Moreland, L.D.; Schamiloglu, E.; Lemke, R.W.;

Instabilities in magnetically insulated ion diodes

1995 / IEEE / 0-7803-2669-5
By: Slutz, S.A.; Lemke, R.W.;

Detailed measurements showing the influence of the forward propagating wave and end reflections on the performance of relativistic backward wave oscillators

1995 / IEEE / 0-7803-2669-5
By: Lemke, R.W.; Schamiloglu, E.; Moreland, L.D.; Roitman, A.M.;

Recent work on an improved vacuum diode for an annular beam amplifier and initial results of rf extraction

1995 / IEEE / 0-7803-2669-5
By: Spencer, T.A.; Lemke, R.W.; Haynes, W.B.; Carlesten, B.E.; Arman, M.J.; Coleman, P.D.; Hendricks, K.J.; Haworth, M.D.; Bowers, L.;

Enhanced frequency agility of high-power relativistic backward wave oscillators

1996 / IEEE
By: Rostov, V.V.; Korovin, S.D.; Roitman, A.M.; Lemke, R.W.; Schamiloglu, E.; Moreland, L.D.;

Power And Frequency Measurements From A Uniform Backward Wave Oscillator As A Function Of Length

1994 / IEEE / 0-7803-2006-9
By: Lemke, R.W.; Schamiloglu, E.; Roitman, A.M.; Moreland, L.D.; Pegel, I.V.;

A High Efficiency Relativistic Uniform Backward Wave Oscillator

1994 / IEEE / 0-7803-2006-9
By: Lemke, R.W.; Schamiloglu, E.; Moreland, L.D.; Roitman, A.M.; Pegel, I.V.;

Numerical simulation of backward wave oscillator having nonuniform amplitude slow wave structures

1994 / IEEE / 0-7803-2006-9
By: Schamiloglu, E.; Moreland, L.D.; Lemke, R.W.; Roitman, H.A.M.; Pegel, I.V.; Korovin, S.D.;

Broad band frequency tuning of the split cavity oscillator

1993 / IEEE / 0-7803-1360-7
By: Ruebush, M.; Lemke, R.W.; Clark, M.C.;

Recent results of research on a 1.3 GHz annular electron beam powered multi-gigawatt microwave amplifier

1993 / IEEE / 0-7803-1360-7
By: Mazarakis, M.; Fayne, W.R.; Hendricks, K.J.; Clark, M.C.; Spencer, T.A.; Lemke, R.W.; Arman, M.J.; Bowers, L.A.;

Investigation of a large diameter, two-cavity klystron for high power microwave generation with an intense relativistic electron beam

1993 / IEEE / 0-7803-1360-7
By: Lemke, R.W.; Hoffman, J.M.; Gallegos, R.R.; Clark, M.C.;

Effects of end reflections on the performance of relativistic backward wave oscillators

1995 / IEEE / 0-7803-2791-8
By: Lemke, R.W.; Schamiloglu, E.; Moreland, L.D.;

Investigation of a load-limited, magnetically insulated transmission line oscillator (MILO)

1997 / IEEE
By: Lemke, R.W.; Clark, M.C.; Calico, S.E.;

Efficiency enhanced, load-limited MILO

1997 / IEEE / 0-7803-3990-8
By: Lemke, R.W.; Calico, S.E.; Clark, M.C.;

3D PIC simulation study of the relativistic magnetron

1998 / IEEE / 0-7803-4792-7
By: Lemke, R.W.;

Theoretical Investigation Of A Oscillator for Modulating Magnetized, Annular, Relativistic Electron Beams

1991 / IEEE / 0-7803-0147-1
By: Clark, M.C.; Bacon, L.D.; Lemke, R.W.;

The Split Cavity Oscillator And RIF Extraction

1992 / IEEE / 0-7803-0716-X
By: Marder, B.M.; Clark, M.C.; Lemke, R.W.;

Significant pulse-lengthening in a multigigawatt magnetically insulated transmission line oscillator

1998 / IEEE
By: Hackett, K.; Hendricks, K.J.; Benford, J.; Baca, G.; Haworth, M.D.; Spencer, T.A.; Shiffler, D.; Sena, M.; Ralph, D.; Englert, T.; Price, D.; Lemke, R.W.; LaCour, M.; Henley, D.;

Increasing the RF energy per pulse of an RKO

1998 / IEEE
By: Arman, M.J.; Spencer, T.A.; Lemke, R.W.; Bowers, L.; Coleman, P.D.; Hendricks, K.J.; Shiffler, D.; Englert, T.; Haworth, M.D.; Baca, G.;

Efficiency enhancement in high power backward-wave oscillators

1999 / IEEE
By: Eisenhart, R.L.; Feicht, J.R.; Ponti, E.S.; Adler, E.A.; Goebel, D.M.; Lemke, R.W.;

3D PIC simulation study of a relativistic, rising sun magnetron

1999 / IEEE / 0-7803-5224-6
By: Spencer, T.A.; Genoini, T.C.; Lemke, R.W.;

Magnetron structure design using 2- and 3-D EM codes

1999 / IEEE / 0-7803-5224-6
By: Lemke, R.W.; Luginsland, J.W.; Spencer, T.A.;

Electrodynamic beam loading and pulse shortening effects due to a intense relativistic electron beam/plasma

2000 / IEEE / 0-7803-5982-8
By: Lau, Y.Y.; Luginsland, J.W.; Baca, C.; Haworth, M.D.; Lemke, R.W.; Hendricks, K.J.;

Magnetron simulations and experiments

2000 / IEEE / 0-7803-5982-8
By: Lemke, R.W.; Price, D.; Luginsland, J.W.; Jaynes, R.L.; Cohen, W.E.; Spencer, T.A.; Peters, C.W.; Brake, M.L.; Lau, Y.Y.; Anderson, S.A.; Gilgenbach, R.M.; Lopez, M.R.; Ludeking, L.; McNeely, M.J.; Booske, J.H.;

Evidence of a new pulse-shortening mechanism in a load-limited MILO

2000 / IEEE
By: Lemke, R.W.; Luginsland, J.W.; Haworth, M.D.;

Effects that limit efficiency in relativistic magnetrons

2000 / IEEE
By: Lemke, R.W.; Spencer, T.A.; Genoni, T.C.;

Improved cathode design for long-pulse MILO operation

2001 / IEEE
By: Lemke, R.W.; Luginsland, J.W.; Haworth, M.D.;

2D RMHD simulation study of nested wire array Z-pinch with foam target

2001 / IEEE / 0-7803-7141-0
By: Mehlhorn, T.A.; Lash, J.S.; Sanford, T.W.L.; Lemke, R.W.; Peterson, D.L.;

Multi-dimensional z-pinch calculations with ALEGRA

2001 / IEEE / 0-7803-7141-0
By: Garasi, C.J.; Haill, T.A.; Brunner, T.A.; Budge, K.G.; Campbell, R.B.; Desjarlais, N.I.; Oliver, B.V.; Lawrence, R.J.; Lemke, R.W.; Mehlhorn, T.A.; Robinson, A.C.; Cochrane, K.;

Relativistic L-band magnetron and nonrelativistic oven magnetron experiments

2001 / IEEE / 0-7803-7141-0
By: Luginsland, J.W.; Lemke, R.W.; Lau, Y.Y.; Brake, M.L.; Johnston, M.D.; Keyser, M.; Peters, C.W.; Miyake, H.; Anderson, S.A.; Gilgenbach, R.M.; Lopez, M.R.; Ludeking, L.; Spencer, T.A.; Price, D.;

Variations and characteristics of dynamic Hohlraums on Z

2001 / IEEE / 0-7803-7141-0
By: Sanford, T.W.L.; Watt, R.G.; Mock, R.C.; Chandler, G.A.; Fehl, D.L.; Hebron, D.E.; Leeper, R.J.; Mehlhorn, T.A.; Nash, T.J.; Ruiz, C.L.; Slutz, S.A.; Struve, K.W.; Peterson, D.L.; Chrien, R.E.; Idzorek, G.C.; Lemke, R.W.;

Relativistic magnetron experiments and novel theory on the limiting current in a relativistic, magnetically-insulated diode

2002 / IEEE / 0-7803-7256-5
By: Price, D.; Lemke, R.W.; Haworth, M.; Luginsland, J.W.; Spencer, T.A.; Bogdan Neculaes, V.; Jones, M.C.; Peters, C.W.; Miyake, H.; Keyser, M.W.; Johnston, M.D.; Anderson, S.; Jordan, D.W.; Lau, Y.Y.; Gilgenbach, R.M.; Lopez, M.R.;

Multi-dimensional Z-pinch calculations with ALEGRA

2001 / IEEE / 0-7803-7120-8
By: Cochrane, K.; Robinson, A.C.; Mehlhorn, T.A.; Lemke, R.W.; Lawrence, R.J.; Haill, T.A.; Garasi, C.J.; Desjarlais, M.P.; Budge, K.G.; Brunner, T.A.;

Top/bottom asymmetry measured in axial radiation exiting dynamic-hohlraum X-ray source on Z

2002 / IEEE / 0-7803-7407-X
By: Mehlhorn, T.A.; Nash, T.J.; Lemke, R.W.; Leeper, R.J.; Chandler, G.A.; Mock, R.C.; Sanford, T.W.L.; Mosher, D.; Lebedev, S.V.; Haines, M.G.; Chittenden, J.P.; Watt, R.G.; Peterson, D.L.; Idzorek, G.C.; Chrien, R.E.; Waisman, E.M.; Sarkisov, G.S.;

Relativistic and nonrelativistic magnetron experiments and a novel theory of relativistic crossed-field limiting current

2002 / IEEE / 0-7803-7407-X
By: Gilgenbach, R.M.; Lopez, M.R.; Price, D.; Lemke, R.W.; Haworth, M.; Jordan, D.W.; Neculaes, V.B.; Spencer, T.A.; Jones, M.C.; Johnston, M.D.; Lau, Y.Y.; Luginsland, J.W.;

Effects of cathode endcaps on long-pulse, relativistic magnetron operation

2002 / IEEE / 0-7803-7423-1
By: Gilgenbach, R.M.; Price, D.; Lemke, R.W.; Haworth, M.; Luginsland, J.W.; Jones, M.C.; Lopez, M.R.; Lau, Y.Y.; Jordan, D.W.; Neculaes, V.B.; Johnston, M.D.; Spencer, T.A.;

Cathode effects on a relativistic magnetron driven by a microsecond e-beam accelerator

2002 / IEEE
By: Price, D.; Lopez, M.R.; Haworth, M.D.; Luginsland, J.W.; Spencer, T.A.; Yue Ying Lau; Bogdan Neculaes, V.; Lemke, R.W.; Jones, M.C.; Peters, C.W.; Miyake, H.; Keyser, M.W.; Johnston, M.D.; Anderson, S.A.; Jordan, D.W.; Gilgenbach, R.M.;

Pulse shaping of the load current on the Z accelerator

2003 / IEEE / 0-7803-7915-2
By: Lemke, R.W.; Bliss, D.E.; Savage, M.E.; Harjes, H.C.; Pointon, T.D.;

Equation of State Measurements at Ultra-High Pressures on the Sandiaz Accelerator

2005 / IEEE / 0-7803-9300-7
By: Deeney, C.; Lemke, R.W.; Knudson, M.D.;

Shock Speed and Implosion Uniformity Measurements from Dynamic Hohlraum Experiments at Sandia National Laboratories Z Accelerator

2005 / IEEE / 0-7803-9300-7
By: Mehlhorn, T.A.; Lemke, R.W.; Slutz, S.A.; Rochau, G.A.; Chandler, G.A.; Dunham, G.; Bailey, J.E.; Nielson, D.; Calhoun, D.; Moore, T.;

Empirical Determination of Radiation Energetics of Inertial Confinement Fusion Relevant Wire-Array Z-Pinches

2007 / IEEE / 978-1-4244-0915-0
By: Jones, B.; Cuneo, M.E.; Waisman, E.M.; Lemke, R.W.; Jones, M.; Sinars, D.B.; Lebedev, S.V.; Porter, J.L.;

Factors Influencing the Current Distribution in MHD Simulations of Wire Array Implosions

2007 / IEEE / 978-1-4244-0915-0
By: Chittenden, J.P.; Ampleford, D.J.; Yu, E.P.; Lemke, R.W.; Desjarlais, M.P.; Jennings, C.A.; Ciardi, A.;

On the validation of a 3D inflow model for simulating wire array z-pinches, z-pinch energetics, and scaling of radiated power with current

2008 / IEEE / 978-1-4244-1929-6
By: Desjarlais, M.P.; Sinars, D.B.; Waisman, E.M.; Lemke, R.W.; Mehlhorn, T.A.; Yu, E.P.; Cuneo, M.E.; Hanshaw, H.L.; Brunner, T.A.; Haill, T.A.;

Lower bounds for the kinetic energy and resistance of z-pinches on Z

2008 / IEEE / 978-1-4244-1929-6
By: Jones, B.M.; Cuneo, M.E.; Waisman, E.M.; Stygar, W.A.; Sinars, D.B.; Lemke, R.W.; Jones, M.;

An optimization study of stripline loads for isentropic compression experiments

2009 / IEEE / 978-1-4244-4064-1
By: Seidel, D.B.; Pointon, T.D.; Davis, J.-P.; Lemke, R.W.; Knudson, M.D.; Coats, R.S.; Langston, W.L.;

Linear stability of a high-current, relativistic, charged particle beam drifting in a resonant cavity

1990 / IEEE
By: Lemke, R.W.;