Zobrazeno 1 - 10
of 20
pro vyhledávání: '"J. W.-K. Mark"'
Autor:
J. W.-K. Mark
Publikováno v:
Laser and Particle Beams. 9:713-723
We investigated several examples of ion beam targets that utilize the energy efficiency of direct drive while optimizing on the symmetry requirements. Heavy-ion beams of charge state Z ≥ 3 at 5–10 GeV have ≲15–20 m bending radii with 3.5-T fi
Autor:
J. W.-K. Mark, J. D. Lindl
Publikováno v:
Laser and Particle Beams. 3:37-40
Our recent estimates are that the energy-gains for cryogenic single-shell targets are close to those of similar double-shelled targets. However, the peak-power requirements for single-shell targets are still about a factor of two higher.
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 278:186-190
Longitudinal beam compression and the possibility of concurrent pulse shaping have been the subject of previous studies using analytical methods and 1D
Publikováno v:
Laser and Particle Beams. 3:41-49
Recently revised estimates of target gain have added additional optimistic inputs to the interface between targets, accelerators and fusion chamber beam transport. But it remains valid that neutralization of the beams in the fusion chamber is useful
Autor:
Simon S. Yu, J. W.-K. Mark
Publikováno v:
Physics Letters A. 92:179-182
The closure of hydrodynamical models for pinched beams is discussed within adiabatic assumptions mathematically analogous to that of Chew, Goldberger and Low. A simplified drift-kinetic equation is derived which could be used for closure. In addition
Autor:
J. W.-K. Mark
Publikováno v:
Physics Letters A. 114:458-464
A procedure is developed for reducing energy-deposition asymmetry in spherical targets driven directly by ion or laser beams. This work is part of a strategy for achieving illumination symmetry in such targets, which is proposed as an alternative to
Autor:
J. W-K. Mark, G.A. Krafft
Publikováno v:
Nuclear Instruments and Methods in Physics Research. 198:193-195
The electron beam ion source (EBIS) was proposed and subsequently realized by Donets. Further development has been done by the Orsay group and by the Berkeley group. Much theoretical work has been done on EBIS and, in particular, Litwin, Vella, and S
Publikováno v:
IEEE Transactions on Nuclear Science. 32:2477-2479
The process of longitudinal compression of a drifting heavy ion pulse to be used as an ICF driver is examined with the aid of particle simulation. Space charge forces play a vital role in halting compression before the final focus lens system is reac
Publikováno v:
IEEE Transactions on Nuclear Science. 30:2552-2554
Publikováno v:
Physics Letters A. 88:225-227
Inertial-fusion targets have been designed for use with heavy-ion accelerators as drivers in fusion energy power plants. We have made an initial survey of target gain versus beam energy, power, focal radius, and ion range. This provides input for und