Evaluation of slowing down of proton and deuteron beams in CH<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msub><mml:mrow /><mml:mn>2</mml:mn></mml:msub></mml:math>, LiH, and Al partially ionized plasmas

Casas, David; Barriga-Carrasco, Manuel D.; Rubio, J.

doi:10.1103/physreve.88.033102

Cited by 22 publications

(31 citation statements)

References 29 publications

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“…Theoretically, the calculation of the stopping power is given in the literature [13][14][15][16] for different states of the medium. The stopping power contributions are calculated for electrons bound to the target atoms and for the free electron in a plasma medium.…”

Section: The Equations Of Motion Of Charge Particles In An External Ementioning

confidence: 99%

Mitigation of the Stopping Power Effect on Proton-Boron11 Nuclear Fusion Chain Reactions

Eliezer

Schweitzer²,

Nissim³

et al. 2020

Front. Phys.

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A proton beam with a velocity of the order of 10 9 cm/s is generated to interact with a charge neutral hydrogen-boron medium such as H 3 B. The created charged particles are confined by magnetic fields. This concept was the basis for a novel non-thermal fusion reactor, published recently in Laser and Particle Beams [1]. The fusion is initiated by protons followed by a process of chain reactions in a neutral medium density of the order of 10 19 cm −3 , heated by the pB 11 fusion created alphas up to a temperature of about one electron volt. In this system, the radiation losses by bremsstrahlung are negligible and the plasma thermal pressure is low. The ionization of the gaseous medium is caused by the alpha elastic nuclear collisions with the hydrogen atoms and their thermal heating and it is < 10 −4. An external electric field is applied to avoid the energy losses of the protons particles by friction, due to their interaction with the electrons of the medium, to keep the proton-boron fusion at the maximum cross section of about 600 keV at the center of mass frame of reference. The alphas created in the pB 11 fusion undergo nuclear elastic collisions with the hydrogen protons of the medium and causing a pB 11 chain reaction. In this paper the equation of motion of these proton and alphas are solved numerically for the one-dimensional (1D) case, and their possible solutions are analyzed and discussed. Specifically, it is shown how the electric field can mitigate the stopping power for the proton11-proton nuclear fusion. Our results show that starting from a bunch of 10 13 protons in our volume, an alpha number of particles of 6 × 10 16 was accepted after a 5 ms cycle of applying our specially designed electric field. Consequently, the medium temperature was raised to 1.3 eV. The aim of this paper is to present a new concept by addressing only the main physical processes and not to present a complete engineering design. The configuration for mitigating the stopping power and the numerical solution in this paper is novel and promises few applications with a viable proton-boron11 fusion reactions.

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Section: The Equations Of Motion Of Charge Particles In An External Ementioning

confidence: 99%

Mitigation of the Stopping Power Effect on Proton-Boron11 Nuclear Fusion Chain Reactions

Eliezer

Schweitzer²,

Nissim³

et al. 2020

Front. Phys.

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“…Recently, the Mermin model was extended to include, along the density conservation, the energy and momentum conservation laws [13,14]. On the other hand, the influence of these model IDFs on the plasma stopping power was thoroughly studied by Barriga-Carrasco and co-workers in a series of papers [27,28].…”

Section: B Modelsmentioning

confidence: 99%

“…It should be noted that 053102-4 the generalization of [29] to partially ionized plasmas or plasmas with complex ions and a larger number of species is rather straightforward (see, e.g., [28,47,48]). At present, this electron-ion correlation correction to the electron fluid stopping power might not be observable due to a relatively low accuracy of the experimental techniques available, but for dicluster heavy-ion projectiles [49] that correlation correction could become more pronounced.…”

Section: Polarization Stopping Powermentioning

confidence: 99%

Dielectric function of dense plasmas, their stopping power, and sum rules

et al. 2014

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Mathematical, particularly, asymptotic properties of the random-phase approximation, Mermin approximation, and extended Mermin-type approximation of the coupled plasma dielectric function are analyzed within the method of moments. These models are generalized for two-component plasmas. Some drawbacks and advantages of the above models are pointed out. The two-component plasma stopping power is shown to be enhanced with respect to that of the electron fluid.

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“…The dense plasma is formed in the experiments on heavy ion‐driven fusion, experiments at the National Ignition Facility, and magnetized Z‐pinch experiments . Currently, a large number of theoretical and experimental studies of physical processes that determine the design of the thermonuclear target are carried out. The study of energy losses of charged particles in the plasma is of great importance for dense plasma physics, as well as for solution of the problems of inertial fusion .…”

Section: Introductionmentioning

confidence: 99%

Dynamical properties of inertial confinement fusion plasmas

Kodanova

Рамазанов

Khikmetov

et al. 2018

Contributions to Plasma Physics

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In this paper, we calculate the stopping power and temperature relaxation of dense plasmas on the basis of the Coulomb logarithm using the effective potentials. These potentials take into account long-range multi-particle screening effects and short-range quantum mechanical effects in two-temperature plasmas. Ion energy losses in the plasma for different values of temperature and plasma density are calculated. The obtained results are compared with the theoretical works of other authors and with the results of molecular dynamics simulations. KEYWORDSCoulomb logarithm, dense plasma, effective potentials, inertial confinement fusion, stopping power 1

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Evaluation of slowing down of proton and deuteron beams in CH2, LiH, and Al partially ionized plasmas

Cited by 22 publications

References 29 publications

Mitigation of the Stopping Power Effect on Proton-Boron11 Nuclear Fusion Chain Reactions

Mitigation of the Stopping Power Effect on Proton-Boron11 Nuclear Fusion Chain Reactions

Dielectric function of dense plasmas, their stopping power, and sum rules

Dynamical properties of inertial confinement fusion plasmas

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