Zobrazeno 1 - 10
of 48
pro vyhledávání: '"W.J. DeHope"'
Autor:
Jeffrey D. Colvin, Alan M. Frank, W.J. DeHope, Wayne E. King, David Gibson, Michael R. Armstrong, Thomas LaGrange, Ken Boyden, Fred Hartemann, Ben J. Pyke, Ben Torralva, Geoffrey H. Campbell, Bryan W. Reed, Nigel D. Browning, Brent C. Stuart, R. M. Shuttlesworth, Judy S. Kim
Publikováno v:
Ultramicroscopy. 107:356-367
Although recent years have seen significant advances in the spatial resolution possible in the transmission electron microscope (TEM), the temporal resolution of most microscopes is limited to video rate at best. This lack of temporal resolution mean
Publikováno v:
IEEE Transactions on Plasma Science. 24:735-743
A low-magnetic-field moderate-voltage gyrotron amplifier has been designed for stable high-performance operation at 95 GHz. A slotted interaction circuit is utilized to achieve strong amplification near the third cyclotron harmonic frequency. The sta
Publikováno v:
2007 IEEE 34th International Conference on Plasma Science (ICOPS).
Summary form only given. High-resolution radiography using high-current electron accelerators based on the induction linac principle requires the linac's final spot on the X-ray target to be millimeter-sized. The requisite final focusing solenoid mus
Publikováno v:
2007 16th IEEE International Pulsed Power Conference.
Publikováno v:
2007 16th IEEE International Pulsed Power Conference.
At Lawrence Livermore National Laboratory (LLNL), our flash X-ray accelerator (FXR) is used on multi-million dollar hydrodynamic experiments. Because of the importance of the radiographs, FXR must be ultra-reliable. Flash linear accelerators that can
Publikováno v:
2007 IEEE 34th International Conference on Plasma Science (ICOPS).
Summary form only given. At Lawrence Livermore National Laboratory (LLNL), our flash X-ray accelerator (FXR) is used on multi-million dollar hydrodynamic experiments. Because of the importance of the radiographs, FXR must be ultra-reliable. Flash lin
Publikováno v:
Proceedings of the 2005 Particle Accelerator Conference.
A single-cell test stand has been constructed at LLNL for studies aimed at improving the performance of the FXR radiographic facility. It has guided the development of diagnostics, pulsed power improvements, machine maintenance, and interface issues
Autor:
Joseph T. McKeown, Melissa K. Santala, B.W. Reed, G. H. Campbell, Thomas LaGrange, W.J. DeHope, G. Huete, R. M. Shuttlesworth
Publikováno v:
Microscopy and Microanalysis. 19:1154-1155
Extended abstract of a paper presented at Microscopy and Microanalysis 2013 in Indianapolis, Indiana, USA, August 4 – August 8, 2013.
Autor:
Randy T. Shelton, W.J. DeHope, William C. Tapley, Calvin L. Robb, Craig W. Ollis, Peter J. Biltoft, Jayson J. Watson, P. A. Arnold, William G. Funkhouser, Keith A. Primdahl, Andrew F. Hinz, Michael D. O'Brien
Publikováno v:
SPIE Proceedings.
Large aperture Plasma Electrode Pockels Cells (PEPCs) are an enabling technology in the National Ignition Facility (NIF) at the Lawrence Livermore National Laboratory. The Pockels cells allow the NIF laser to take advantage of multipass main amplifie
Publikováno v:
Digest of Technical Papers. 12th IEEE International Pulsed Power Conference. (Cat. No.99CH36358).
Recent progress in the development and understanding of linear induction accelerator have produced machines with 10's of MeV of beam energy and multi-kiloampere currents. Near-term machines, such as DARHT-2, are envisioned with microsecond pulselengt