Elastic Nuclear Plus Interference Cross Sections for Light-Charged Particles

Perkins, S.T.; Cullen, D.E.

doi:10.13182/nse81-a21336

Cited by 57 publications

(46 citation statements)

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“…The second term on the right-hand side of Eq. (1) accounts for nuclear plus interference (NI) scattering [7] of alpha particles by background ions n [8]. We consider NI scattering between 1) alpha particles and deuterons, 2) alpha particles and tritons.…”

Section: Analysis Modelmentioning

confidence: 99%

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Alpha Particle Slowing-Down Characteristics and the Effect on MHD Instability Excitation at High-Density Operation Points in FFHRs

Matsuura

Mitarai

Sagara

et al. 2011

Plasma and Fusion Research

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Alpha-particle slowing-down behaviors at low-temperature, high-density operation points in force-free helical reactors (FFHRs) are examined on the basis of a Fokker-Planck (FP) simulation that simultaneously consider the balance among generation, slowing down, and loss from the plasma in parallel with the density dependence of the Alfvén speed. An accurate treatment of the boundary velocity region between thermal and non-thermal components is shown to be important in evaluating the alpha particle population that can induce instability. In a typical high-density, low-temperature operation point in an FFHR, this population is reduced.

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Section: Analysis Modelmentioning

confidence: 99%

“…We consider NI scattering between 1) alpha particles and deuterons, 2) alpha particles and tritons. The NI cross sections are taken from the work of Perkins and Cullen [7]. The third and fifth terms on the right-hand side of Eq.…”

Section: Analysis Modelmentioning

confidence: 99%

Alpha Particle Slowing-Down Characteristics and the Effect on MHD Instability Excitation at High-Density Operation Points in FFHRs

Matsuura

Mitarai

Sagara

et al. 2011

Plasma and Fusion Research

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“…Using NEC data from [38], roughly, r e ∼ = 1/(1 + n He /(3.47 * 10 28 )). For ρ = 3 × 10 5 (g/cm 3 ) and for n D /n He = 0.1, 35 % goes to electrons.…”

Section: D-he-3mentioning

confidence: 99%

Aneutronic Fusion in a Degenerate Plasma

Son

Fisch

2004

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In a Fermi-degenerate plasma, the electronic stopping of a slow ion is smaller than that given by the classical formula, because some transitions between the electron states are forbidden. The bremsstrahlung losses are then smaller, so that the nuclear burning of an aneutronic fuel is more efficient. Consequently, there occurs a parameter regime in which self-burning is possible. Practical obstacles in this regime that must be overcome before net energy can be realized include the compression of the fuel to an ultra dense state and the creation of a hot spot. +

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“…In nuclear burning plasmas, high-energy particles generated from nuclear reactions or beam injections cause nuclear elastic scattering (NES) with a certain probability [1,2]. NES is predominated by nuclear force, except the pure Coulomb force.…”

Section: Introductionmentioning

confidence: 99%

A Method of Knock-on Tail Observation Accounting Temperature Fluctuation Using <sup>6</sup>Li+T/D+T Reaction in Deuterium Plasma

Kawamoto

Matsuura

2017

Plasma and Fusion Research

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It is important to understand the phenomena occurring in nuclear burning plasmas in order to operate fusion reactors. Although multiple studies have been conducted on nuclear elastic scattering (NES), only few experiments have focused on the observation of a knock-on tail via NES in nuclear burning plasmas. NES is an important phenomenon because it occurs in various plasmas and affects their energy balance. As for the observation of a knock-on tail, a method using γ-rays/neutrons generated fromHe + n reactions in a proton-beam-injected deuterium plasma has been proposed. However, there is a possibility to be unable to distinguish whether the main factor affecting the reaction rates is the plasma temperature or the formation of a knock-on tail. To avoid this confusion, herein, we proposed a method based on 6 Li + t → 8 Li * + p or D + t → 4 He + n reactions. These reactions can reveal the plasma temperature without the influence of a knock-on tail because the triton distribution function in deuterium plasmas is remarkably distorted from Maxwellian. The procedure and utilization possibility of the proposed method are discussed.

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Elastic Nuclear Plus Interference Cross Sections for Light-Charged Particles

Cited by 57 publications

References 0 publications

Alpha Particle Slowing-Down Characteristics and the Effect on MHD Instability Excitation at High-Density Operation Points in FFHRs

Alpha Particle Slowing-Down Characteristics and the Effect on MHD Instability Excitation at High-Density Operation Points in FFHRs

Aneutronic Fusion in a Degenerate Plasma

A Method of Knock-on Tail Observation Accounting Temperature Fluctuation Using <sup>6</sup>Li+T/D+T Reaction in Deuterium Plasma

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