Dissociation of MeV HeH<sup>+</sup>Ions at Glancing Angle Incidence on Clean (001) Surface of SnTe

Susuki, Yasufumi; Ito, Takashi U.; Kimura, Kenji; Mannami, Michi‐hiko

doi:10.1143/jpsj.61.3535

Cited by 11 publications

(11 citation statements)

References 15 publications

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“…(ii) The dissociation of molecular ions in glancing incidence experiments [16]. (iii) The skipping motion of ions at surfaces [17,18] (iv) Image-potential effects on fast-proton trajectories in surface scattering [19].…”

Section: Introductionmentioning

confidence: 99%

Dynamical image potential and induced forces for charged particles moving parallel to a solid surface

Arista

1994

Phys. Rev. A

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The dynamical image potential and ensuing forces induced by a charged particle moving parallel to a solid surface are investigated by using a dielectric formulation for semi-infinite dispersive media. The adiabatic behavior of the field in the asymptotic range is discussed in a general way using a multipole expansion. Several calculations illustrate the behavior of the field using both a simple model, where the surface response is approximated by a single plasma resonance, and a more realistic representation of the medium based upon the empirical information on the optical constants for various solids (Al, Cu, Ag, and Au). The model parameters may be adjusted to provide very good agreement with the optical-data integrations of the stopping and lateral forces on the moving charge. On the other hand, important differences in the description of the wake potential using either the simple plasma resonance model, or the optical-data representation, are obtained for Cu, Ag, and Au.PACS number(s): 34.50.8w, 79.20.Rf, 78.90.+t

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Section: Introductionmentioning

confidence: 99%

Dynamical image potential and induced forces for charged particles moving parallel to a solid surface

Arista

1994

Phys. Rev. A

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“…This indicates that the molecular axis tends to align to the surface during the grazing angle scattering. This alignment is caused by the surface continuum potential acting on the fragment ions at the surface [12]. If the molecular axis inclines to the surface, the constituent atom closer to the surface feels stronger repulsive force from the surface than the other atom.…”

Section: Resultsmentioning

confidence: 99%

“…2(a) and (b)) show a pronounced peak at (E, u) = ($392 keV, 0 mrad) which corresponds to the trailing protons. The enhancement of the trailing protons can be ascribed to the effect of the surface wake potential induced by the partner He ions [12]. The surface wake potential pulls the proton backward.…”

Section: Methodsmentioning

confidence: 99%

Grazing scattering of 1–2MeV HeH+ ions from KCl(001): Effect of surface track potential

Sakata

Nakajima

Suzuki

et al. 2011

Nuclear Instruments and Methods in Physics Research Section B:

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“…The main part of the experimental setup was described elsewhere [6,8], so only relevant points of the experimental procedure are mentioned here.…”

Section: Methodsmentioning

confidence: 99%

“…Recently we improved the energy resolution of our ion detecting system and reported the distributions of fragments in energy and angle when MeV HeH+ ions dissociate at glancing-angle incidence on a elean surface of SnTe [6]. A distribution corresponding to the "ring pattern" of the fragments observed at the foil-induced fragmentation is obtained when the angular dependence of the energy spectra is measured in the direction paralle1 to the surface.…”

Section: Introductionmentioning

confidence: 99%

Dissociative scattering of fastHeH+ions at glancing-angle incidence on a crystal surface

et al. 1995

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Kinetic energies and charge-state fractions of specularly reflected fragments have been studied at glancing-angle incidence of (0.8 -2.5)-MeV HeH+ ions on a clean (001) surface of SnTe. It is shown that the kinetic energies of fragments agree well with those calculated from Coulomb repulsion of He+ and H+ fragments, while most of the outgoing fragments are bare nuclei. The final kinetic energies and charge-state fractions of fragments are explained by a computer simulation: HeH+ dissociates into fragments where at least one electron is retained in the He-H system and there follows electron loss from the fragments after most of the initial potential energy has been transferred to the kinetic energies of fragments. The cross section for dissociation of HeH+ ions in collisions with electrons at the surface is estimated to be of the orderof10 ' cm .

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Dissociation of MeV HeH⁺Ions at Glancing Angle Incidence on Clean (001) Surface of SnTe

Cited by 11 publications

References 15 publications

Dynamical image potential and induced forces for charged particles moving parallel to a solid surface

Dynamical image potential and induced forces for charged particles moving parallel to a solid surface

Grazing scattering of 1–2MeV HeH+ ions from KCl(001): Effect of surface track potential

Dissociative scattering of fastHeH+ions at glancing-angle incidence on a crystal surface

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Dissociation of MeV HeH+Ions at Glancing Angle Incidence on Clean (001) Surface of SnTe

Cited by 11 publications

References 15 publications

Dynamical image potential and induced forces for charged particles moving parallel to a solid surface

Dynamical image potential and induced forces for charged particles moving parallel to a solid surface

Grazing scattering of 1–2MeV HeH+ ions from KCl(001): Effect of surface track potential

Dissociative scattering of fastHeH+ions at glancing-angle incidence on a crystal surface

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Dissociation of MeV HeH⁺Ions at Glancing Angle Incidence on Clean (001) Surface of SnTe