Orientation-dependent retarding force of a three-dimensional degenerate electron gas for slow homonuclear trimers

被引：0

作者：

Osmani, Orkhan ^{[1
]}

Nagy, Istvan ^{[1
,2
]}

机构：

[1] Donostia Int Phys Ctr DIPC, E-20018 San Sebastian, Spain

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

来源：

PHYSICAL REVIEW A | 2012年 / 86卷 / 04期

关键词：

MOLECULES; ENERGY;

D O I：

10.1103/PhysRevA.86.042901

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A theoretical study is presented on the orientation-dependent retarding force experienced by a slow homonuclear linear trimer moving at arbitrary alignment with the direction of its flight in a three-dimensional degenerate electron gas of metallic densities. We apply a standard multiple-scattering method for elastic scattering of independent electrons off a three-center system in a screening environment. These centers are modeled by short-range auxiliary potentials and thus they are characterized by an effective s-type phase shift eta. Within this framework for the orientation-dependent retarding force, the interplay of wave interference and multiple scattering is analyzed in a comparative manner for a realistic set of the input parameters. By allowing a restricted variation in the polar angle between the linear multicenter orientation and its velocity direction, a reasonable agreement with data obtained by a slow carbon trimer is established.

引用

页数：4

共 19 条

[11] CONSTRUCTION OF TIGHT-BINDING-LIKE POTENTIALS ON THE BASIS OF DENSITY-FUNCTIONAL THEORY - APPLICATION TO CARBON [J].

POREZAG, D ;

FRAUENHEIM, T ;

KOHLER, T ;

SEIFERT, G ;

KASCHNER, R .

PHYSICAL REVIEW B, 1995, 51 (19) :12947-12957

[12] ATOMS EMBEDDED IN AN ELECTRON-GAS - PHASE-SHIFTS AND CROSS-SECTIONS [J].

PUSKA, MJ ;

NIEMINEN, RM .

PHYSICAL REVIEW B, 1983, 27 (10) :6121-6128

[13] Signature of plasmon excitations in the stopping ratio of fast hydrogen clusters [J].

Shubeita, S. M. ;

Sortica, M. A. ;

Grande, P. L. ;

Dias, J. F. ;

Arista, N. R. .

PHYSICAL REVIEW B, 2008, 77 (11)

[14] Molecule and cluster bombardment: Energy loss, trajectories, and collision cascades [J].

Sigmund, P ;

Bitensky, IS ;

Jensen, J .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 1996, 112 (1-4) :1-11

[15] Eigenchannel method for nonrelativistic scattering from zero-range potentials [J].

Szmytkowski, R ;

Gruchowski, M .

PHYSICAL REVIEW A, 2004, 70 (06) :062719-1

[16] Energy loss of slow carbon cluster ions in thin carbon foils [J].

Takahashi, Yasuyuki ;

Hattori, Toshiyuki ;

Hayashizaki, Noriyosu .

PHYSICAL REVIEW A, 2007, 75 (01)

[17] ORIENTATION EFFECTS IN THE STOPPING OF SLOW DIMERS IN AN ELECTRON-GAS [J].

URBASSEK, HM ;

DROGE, V ;

NIEMINEN, RM .

JOURNAL OF PHYSICS-CONDENSED MATTER, 1993, 5 (19) :3289-3302

[18] Experimental energy loss of slow H+ and H2+ in channeling conditions -: art. no. 064901 [J].

Valdés, JE ;

Parra, C ;

Díaz-Valdés, J ;

Denton, CD ;

Agurto, C ;

Ortega, F ;

Arista, NR ;

Vargas, P .

PHYSICAL REVIEW A, 2003, 68 (06)

[19] Small carbon clusters: Spectroscopy, structure, and energetics [J].

Van Orden, A ;

Saykally, RJ .

CHEMICAL REVIEWS, 1998, 98 (06) :2313-2357

← 1 2 →