Overview of virtual national laboratory objectives, plans, 
and projects

Logan, B.G.; Celata, C.M.; Kwan, J.W.; Lee, E.P.; Leitner, M.; Seidl, P.A.; Yu, S.S.; Barnard, J.J.; Friedman, A.; Meier, W.R.; Davidson, Ronald C.

doi:10.1017/s0263034602203018

Cited by 10 publications

(5 citation statements)

References 7 publications

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“…Ion beam pulses are frequently used in many applications, including heavy ion inertial fusion 1,2 , positron beams for electron-positrons colliders 3 , high-density laserproduced proton beams for the fast ignition of inertial confinement fusion targets 4 , etc. In these applications unneutralized ballistic focusing is difficult due to the large repulsive space-charge force of the beam ions.…”

Section: Introductionmentioning

confidence: 99%

Nonlinear plasma waves excitation by intense ion beams in background plasma

2004

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Plasma neutralization of an intense ion pulse is of interest for many applications, including plasma lenses, heavy ion fusion, cosmic ray propagation, etc. An analytical electron fluid model has been developed to describe the plasma response to a propagating ion beam. The model predicts very good charge neutralization during quasi-steady-state propagation, provided the beam pulse duration is much longer than the electron plasma period , where is the electron plasma frequency,p is the background plasma density. In the opposite limit, the beam pulse excites large-amplitude plasma waves. If the beam density is larger than the background plasma density, the plasma waves break.Theoretical predictions are compared with the results of calculations utilizing a particle-in-cell (PIC) code.The cold electron fluid results agree well with the PIC simulations for ion beam propagation through a background plasma. The reduced fluid description derived in this paper can provide an important benchmark for numerical codes and yield scaling relations for different beam and plasma parameters. The visualization of numerical simulation data shows complex collective phenomena during beam entry and exit from the plasma.

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Section: Introductionmentioning

confidence: 99%

Nonlinear plasma waves excitation by intense ion beams in background plasma

2004

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“…Ion-atom ionizing collisions play an important role in many applications, such as heavy ion inertial fusion [1], collisional and radiative processes in the Earth's upper atmosphere [2], ion-beam lifetimes in accelerators [3], atomic spectroscopy [4] and ion stopping in matter [5], and are also of considerable academic interest in atomic physics [6].…”

Section: Introductionmentioning

confidence: 99%

Comparison of quantum-mechanical and classical trajectory calculations of cross sections for ion-atom impact ionization of negative and positive ions for heavy-ion fusion applications

Kaganovich¹,

Startsev²,

Davidson³

2003

Phys. Rev. A

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Stripping cross sections in nitrogen have been calculated using the classical trajectory approximation and the Born approximation of quantum mechanics for the outer shell electrons of 3.2GeV I − and Cs + ions. A large difference in cross section, up to a factor of six, calculated in quantum mechanics and classical mechanics, has been obtained. Because at such high velocities the Born approximation is well validated, the classical trajectory approach fails to correctly predict the stripping cross sections at high energies for electron orbitals with low ionization potential.

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“…Together with the target physics database from the laser-based National Ignition Facility, the IRE should provide the scientific and technological basis for an Engineering Test Facility, the final step toward an inertialfusion demonstration power plant. The reader is referred to [21] for a more complete discussion of program plans.…”

Section: Future Stepsmentioning

confidence: 99%

Overview of Heavy Ion Fusion Accelerator Research in the U. S.

Friedman¹

2002

AIP Conference Proceedings

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This article provides an overview of current U.S. research on accelerators for Heavy Ion Fusion, that is, inertial fusion driven by intense beams of heavy ions with the goal of energy production. The concept, beam requirements, approach, and major issues are introduced. An overview of a number of new experiments is presented. These include: the High Current Experiment now underway at Lawrence Berkeley National Laboratory; studies of advanced injectors (and in particular an approach based on the merging of multiple beamlets), being investigated experimentally at Lawrence Livermore National Laboratory); the Neutralized (chamber) Transport Experiment being assembled at Lawrence Berkeley National Laboratory; and smaller experiments at the University of Maryland and at Princeton Plasma Physics Laboratory. The comprehensive program of beam simulations and theory is outlined. Finally, prospects and plans for further development of this promising approach to fusion energy are discussed. FIGURE 1. Elements of an inertial fusion power plant driven by beams of heavy ions.

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Overview of virtual national laboratory objectives, plans, and projects

Cited by 10 publications

References 7 publications

Nonlinear plasma waves excitation by intense ion beams in background plasma

Nonlinear plasma waves excitation by intense ion beams in background plasma

Comparison of quantum-mechanical and classical trajectory calculations of cross sections for ion-atom impact ionization of negative and positive ions for heavy-ion fusion applications

Overview of Heavy Ion Fusion Accelerator Research in the U. S.

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