Orientation-dependent stopping power of a degenerate electron gas for slow homonuclear dimers

被引：3

作者：

Nagy, I. ^{[1
,2
]}

Aldazabal, I. ^{[2
,3
]}

机构：

[1] Tech Univ Budapest, Inst Phys, Dept Theoret Phys, H-1521 Budapest, Hungary

[2] DIPC, E-20018 San Sebastian, Spain

[3] Ctr Fis Mat CSIC UPV EHU MPC, E-20018 San Sebastian, Spain

来源：

PHYSICAL REVIEW A | 2010年 / 81卷 / 05期

关键词：

ENERGY-LOSS; PARTICLE; IONS;

D O I：

10.1103/PhysRevA.81.052901

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We present a theoretical study on the orientation-dependent retarding force experienced by slow homonuclear dimers moving at arbitrary alignment with the direction of their flight in a three-dimensional degenerate electron gas of metallic densities. The analytical results are derived within the approximate framework of Brueckner for elastic scattering of an electron by a system of two auxiliary potentials of short range. The influence of the screened field of a single constituent of the slowly moving composite projectile on the scattering electron is modeled by an effective phase shift parameter. in the short-range potential in order to characterize the real-constituent system coupling due to displacement. The orientation-dependent closed expressions reveal the dependence of observables on the classical geometry and quantum dynamics. The interplay of wave-interference and multiple scattering in the orientation-dependent friction is analyzed for realistic sets of the input parameters. Comparison with experimental data is made and good agreement is found.

引用

页数：5

共 33 条

[11]

ECHENIQUE PM, 1989, INT J QUANTUM CHEM, P521

[12] ELECTRONIC STOPPING OF SLOW MOLECULAR-IONS IN SOLIDS [J].

ECKARDT, JC ;

LANTSCHNER, G ;

ARISTA, NR ;

BARAGIOLA, RA .

JOURNAL OF PHYSICS C-SOLID STATE PHYSICS, 1978, 11 (21) :L851-L855

[13] Energy loss versus exit angle for H+ and He+ ions channeled in Au ⟨100⟩ at very low energies, and observation of a molecular effect for incident H2+ [J].

Figueroa, E. A. ;

Cantero, E. D. ;

Eckardt, J. C. ;

Lantschner, G. H. ;

Martiarena, M. L. ;

Arista, N. R. .

PHYSICAL REVIEW A, 2008, 78 (03)

[14] ELECTRON-PHONON INTERACTIONS, D RESONANCES, AND SUPERCONDUCTIVITY IN TRANSITION-METALS [J].

GASPARI, GD ;

GYORFFY, BL .

PHYSICAL REVIEW LETTERS, 1972, 28 (13) :801-&

[15] CHARGE STATES FOR H AND HE MOVING IN AN ELECTRON-GAS [J].

GUINEA, F ;

FLORES, F ;

ECHENIQUE, PM .

PHYSICAL REVIEW B, 1982, 25 (10) :6109-6125

[16] ELECTRON-DENSITY NEAR THE NUCLEUS OF A LARGE ATOM [J].

HEILMANN, OJ ;

LIEB, EH .

PHYSICAL REVIEW A, 1995, 52 (05) :3628-3643

[17] Exact Kohn-Sham potential of strongly correlated finite systems [J].

Helbig, N. ;

Tokatly, I. V. ;

Rubio, A. .

JOURNAL OF CHEMICAL PHYSICS, 2009, 131 (22)

[18] H-2+ TRAVERSING ULTRATHIN CARBON FOILS - CLUSTER EFFECTS IN THE ENERGY-LOSS AT 12.5 AND 25 KEV AMU [J].

LEVISETTI, R ;

LAM, K ;

FOX, TR .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH, 1982, 194 (1-3) :281-284

[19] Comment on "Role of Electron-Hole Pair Excitations in the Dissociative Adsorption of Diatomic Molecules on Metal Surfaces" [J].

Luntz, A. C. ;

Makkonen, I. ;

Persson, M. ;

Holloway, S. ;

Bird, D. M. ;

Mizielinski, M. S. .

PHYSICAL REVIEW LETTERS, 2009, 102 (10)

[20] CHARGED-PARTICLE WAKE IN THE RANDOM-PHASE APPROXIMATION [J].

MAZARRO, A ;

ECHENIQUE, PM ;

RITCHIE, RH .

PHYSICAL REVIEW B, 1983, 27 (07) :4117-4128

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