Ion beam compression of thermonuclear pellets

Shearer, J. W.

doi:10.1088/0029-5515/15/5/026

Cited by 37 publications

(15 citation statements)

References 14 publications

(20 reference statements)

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“…The shell is composed of one material -Be (design 1), Al (design 2), and CH. For the calculations presented, the DT gas density was 10 s g*cm 3 and yielded results equivalent to the vacuum case. The initial DT density and temperature profile for each design was the same.…”

Section: Ions Radially Incidentmentioning

confidence: 99%

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Targets driven by dual-energy heavy ions

Magelssen

1984

Nucl. Fusion

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Target designs that utilize heavy-ion beams with two substantially different particle energies are presented. Low-energy ions of moderate power are used to directly drive a spherical-shell target that is cryogenically layered with a deuterium-tritium (DT) mixture. The purpose of this first pulse is to compress the DT fuel and tamper; compressions of a hundred to a few hundred times solid density appear possible. Following compression the target is irradiated with a high-particle energy and high-power pulse. The main purpose of the second pulse is to bring the central DT region to ignition. Additional compression of no more •than 10 is needed. For targets with a low-Z pusher, gains greater than a hundred are possible with an ignition pulse of 1000 TW and a heavy-ion particle energy of 40 GeV. Pulse requirements, finite focusing effects, and symmetry requirements are discussed.

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Section: Ions Radially Incidentmentioning

confidence: 99%

“…The most common method involves shaping the incoming pulse. Typically, for a laser driver the pulse begins at low power, rises slowly, and then abruptly rises to a rather high level [1][2][3][4]. This produces a series of converging shocks that create high compression and localized high temperature.…”

Section: Introductionmentioning

confidence: 99%

Targets driven by dual-energy heavy ions

Magelssen

1984

Nucl. Fusion

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“…We will show later Fig. (4) that over the depths R associated with the deuterium energies of our experiment, this ratio of deuterium to titanium density is a slowly varying function. Furthermore, it is reasonable that the target surface blow-off due to intense energy deposition occurs in a manner that maintains CD at the value it has near the solid surface, CD; i.e.,…”

Section: Interpretationof Neutron Measurements -Thick Target Yieldmentioning

confidence: 71%

Neutron measuements of a reflex diode pulsed ion source experiment

Shearer¹,

Prono²

1976

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“…the interplanetary plasma, etc.). In particular it plays a dominant role in inertial confinement fusion driven by fast electron or ion beams (ICFB) (see, for example, Winterberg 1975;Shearer 1975;Clauser 1975;Cuperman & Levush 1981). Here, ideally, the incident beam consists of a spherically symmetric flow of fast particles impinging normally on the pellet and is defined by the particle charge, mass, kinetic energy and power.…”

Section: Introductionmentioning

confidence: 99%

Generalized expressions for momentum and energy losses of charged particle beams in non-Maxwellian multi-species plasmas and spherical symmetry

Cuperman¹,

Weiss²,

Dryer³

1982

J. Plasma Phys.

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Generalized expressions for the rates of change of the momentum, energy and thermal anisotropy of fast, charged particle beams interacting with non-Maxwellian multi-species plasmas are derived. The results hold for the case of spherically symmetric systems and, therefore, are relevant for inertial confinement fusion schemes driven by fast charged particle beams and for various astro-physical situations. The calculations are based on the Fokker-Planckformalism. The effects connected with the departures from the Maxwellian distribution functions are expressed in terms of their fifth moments, , which reflect the role of the non-Maxwellian tails. The familiar stopping power expression holding for Maxwellian targets is recovered as a particular case.

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Ion beam compression of thermonuclear pellets

Cited by 37 publications

References 14 publications

Targets driven by dual-energy heavy ions

Targets driven by dual-energy heavy ions

Neutron measuements of a reflex diode pulsed ion source experiment

Generalized expressions for momentum and energy losses of charged particle beams in non-Maxwellian multi-species plasmas and spherical symmetry

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