Theory of ion reflection from amorphous surface at low glancing angles

Kumakhov, M. A.; Sabirov, A. S.

doi:10.1080/00337578908228564

Cited by 5 publications

(2 citation statements)

References 8 publications

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Section: X16unclassified

Interatomic potentials of interactions in radiation physics

Dedkov¹

1995

Usp. Fiz. Nauk

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Section: X16unclassified

Interatomic potentials of interactions in radiation physics

Dedkov¹

1995

Usp. Fiz. Nauk

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“…Despite the difference in the physics of propagation processes of particles and radiations in capillaries, a clear example is capillary X-ray optics (for the physics of Xray radiation propagation in capillaries, see [41]), which has grown from a beautiful idea into a widely used tool to handle X-ray radiation [42][43][44][45][46]. In fact, even before the development of capillary/polycapillary X-ray optics, the possibility for using curved reflecting surfaces as an alternative practice to shape ion beams was proposed [47] and successfully discussed [48,49] (see [50]). Based on the physics of charged particle channeling in crystals, the interaction of an incident ion with a reflecting surface was described in the approximation of a continuous atomic potential of the surface.…”

Section: Introductionmentioning

confidence: 99%

Surface Channeling of Charged and Neutral Beams in Capillary Guides

Dabagov

Dik

2022

QuBS

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In this review work, the passage of charged and neutral beams through dielectric capillary guides is described from a uniform point of view of beams channeling in capillaries. The motion of beams into the hollow channels formed by the inner walls of capillaries is mainly determined by multiple small-angle scattering (reflection) and can be described in the approximation of surface channeling. It is shown that the surface interaction potential in the case of micro- and nano-capillaries is actually conditioned by the curvature of the reflecting surface. After presenting the analysis of previously performed studies on X-rays propagation into capillaries, which is valid for thermal neutrons, too, the surface channeling formalism is also developed for charged particle beams, in particular, moving in curved cylindrical capillaries. Alternative theories explaining experimental results on the beams passage through capillaries are based on simple thermodynamic estimates, on various diffusion models, and on the results of direct numerical simulations as well. Our work is the first attempt to explain the effective guiding of a charged beam by a capillary from the general standpoint of quantum mechanics, which made it possible to analytically explore the interaction potential for surface channeling. It is established that, depending on the characteristics of a projectile and a dielectric forming the channel, the interaction potential can be either repulsive or attractive; the limiting values of the potential function for the corresponding cases are determined. It has been demonstrated that the surface channeling behaviour can help in explaining the efficient capillary guiding for radiations and beams.

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The interatomic interaction potentials in radiation physics

Dedkov

1995

Phys. Stat. Sol. (a)

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Theory of ion reflection from amorphous surface at low glancing angles

Cited by 5 publications

References 8 publications

Interatomic potentials of interactions in radiation physics

Interatomic potentials of interactions in radiation physics

Surface Channeling of Charged and Neutral Beams in Capillary Guides

The interatomic interaction potentials in radiation physics

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