Inertial confinement fusion driven by heavy-ion beams

Arnold, R.C.; Meyer‐ter‐Vehn, J.

doi:10.1088/0034-4885/50/5/002

Cited by 113 publications

(39 citation statements)

References 115 publications

(52 reference statements)

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“…This is a remarkable property in the sense that, for instance, a 10-GeV bismuth ion can lose all its energy in a material thickness of less than 0.1 g/cm 2 . As recently shown by the Darmstadt group [Arnold & Meyer-ter-Vehn (1987), for effects of range shortening, see Hofmann et al (1988)], "hot" absorbers further enhance such a property by a factor that can be as much as two or three.…”

Section: Introductionmentioning

confidence: 81%

“…The stopping power for a relatively low-Z absorber (Al) is about twice the one of a heavy target (Au). It has been shown that the range of ions in a highly heated absorber (plasma) is considerably shortened (Arnold & Meyer-ter-Vehn 1987), the effect amounting to a factor two already for a few eV temperature. However, the radiator is quickly disintegrated by the beam and the density may be considerably reduced during the heating process.…”

Section: Target Issuesmentioning

confidence: 99%

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Heavy-ion accelerators for inertial confinement fusion

Rubbia

1993

Laser Part. Beams

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Two concepts have been applied to the classical problem of accelerators for the ignition of indirectly driven inertial fusion. The first is the use of non-Liouvillian stacking based on photoionisation of a singly charged ion beam. A special FEL appears the most suited device to generate the appropriate light beam intensity at the required wavelength. The second is based on the use of a large number of (>1000) beamlets -or "beam straws" -all focussed by an appropriate magnetic structure and concentrated on the same spot on the pellet. The use of a large number of beams -each with a relatively low-current densityelegantly circumvents the problems of space charge, making use of the non-Liouvillian nature of the stopping power of the material of the pellet. The present conceptual design is based on a low-current «/> = 50 mA) heavy-ion beam accelerated with a standard LIN AC structure and accumulated in a stack of rings with the help of photoionisation. Beams are then extracted simultaneously from all the rings and further subdivided with the help of a switchyard of alternate paths separating and synchronising the many bunches from each ring before they hit the pellet. Single beam straws carry a reasonable number of ions: Beams and technology are directly relatable to the ones presently employed, for instance, at the CERN-PS. Space-charge-dominated conditions arise only during the last few turns before extraction and in the beam transport channel to the reaction chamber. In a practical example, we aim at a peak power of 500 TW delivered to the pellet for a duration of 10-15 ns. High-energy (10 GeV) beam straws of Ba doubly ionised ions are concentrated on several (four) focal spots of a radius of about 1 mm. The power density deposited on these tiny cylindrical absorbers inside a hermetic "hohlraum" is about 2.5 x 10 16 w/g. These conditions are believed to be optimal for X-ray conversion, i.e., with an estimated conversion efficiency of about 90%.

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Section: Introductionmentioning

confidence: 81%

Section: Target Issuesmentioning

confidence: 99%

Heavy-ion accelerators for inertial confinement fusion

Rubbia

1993

Laser Part. Beams

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“…In ion beam driven inertial confinement fusion experiments [22][23][24][25] a high energy beam of ions deposits its energy in the target, causing the fuel inside to compress and to ignite through shock implosion. Two possible concepts are heavy ion beams [24,26] or light ion beams [23].…”

Section: Inertial Confinement Fusionmentioning

confidence: 99%

“…Two possible concepts are heavy ion beams [24,26] or light ion beams [23]. Profiles of density, temperature and pressure at different times are explained in depth by R.C.…”

Section: Inertial Confinement Fusionmentioning

confidence: 99%

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Development of aerogel-lined targets for inertial confinement fusion experiments

Braun

2013

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This thesis explores the formation of ICF compatible foam layers inside of an ablator shell used for inertial confinement fusion experiments at the National Ignition Facility. In particular, the capability of p-DCPD polymer aerogels to serve as a scaffold for the deuterium-tritium mix was analyzed. Four different factors were evaluated: the dependency of different factors such as thickness or composition of a precursor solution on the uniformity of the aerogel layer, how to bring the optimal composition inside of the ablator shell, the mechanical stability of ultra-low density p-DCPD aerogel bulk pieces during wetting and freezing with hydrogen, and the wetting behavior of thin polymer foam layers in HDC carbon ablator shells with liquid deuterium.

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Kernfusion durch Trägheitseinschluß: Zur Physik der Fusionspellets

Meyer‐ter‐Vehn¹

1987

Phys. Bl.

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Inertial confinement fusion driven by heavy-ion beams

Cited by 113 publications

References 115 publications

Heavy-ion accelerators for inertial confinement fusion

Heavy-ion accelerators for inertial confinement fusion

Development of aerogel-lined targets for inertial confinement fusion experiments

Kernfusion durch Trägheitseinschluß: Zur Physik der Fusionspellets

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