On a peculiarity of low-energy ion scattering from a well-ordered bcc W(211) surface

被引：0
作者：
Markin, S. N. [1 ,2 ,4 ]
Ermolov, S. N. [1 ,2 ]
Sasaki, M. [1 ,3 ]
van Welzenis, R. G. [1 ]
Glebovsky, V. G. [1 ,2 ]
Brongersma, H. H. [1 ,5 ]
机构：
[1] Eindhoven Univ Technol, Dept Appl Phys, NL-5600 MB Eindhoven, Netherlands
[2] Russian Acad Sci, Inst Solid State Phys, Chernogolovka 142432, Russia
[3] Univ Tsukuba, Inst Appl Phys, Tsukuba, Ibaraki 3058573, Japan
[4] Johannes Kepler Univ Linz, Inst Expt Phys, A-4040 Linz, Austria
[5] Calipso BV, NL-5600 MB Eindhoven, Netherlands
来源：
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS | 2010年 / 268卷 / 15期
关键词：
Low-energy ion scattering (LEIS); Inelastic loss; Ion-solid interactions; Surface structure; Morphology; Roughness and topography; Tungsten; Low-index single crystal surfaces; CHARGE-EXCHANGE; SOLID-SURFACES; HE+; NE+; NEUTRALIZATION; DEPENDENCE; CRYSTAL; SIGNALS; STAR; CU;
D O I：
10.1016/j.nimb.2010.04.025
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
A peculiarity in the backscattering of keV He+ ions by a well-ordered high-purity W(2 1 1) surface is reported. Besides the normal elastic binary collision peak and the low-energy tail due to backscattering in deeper layers, an extra peak is observed for an inelastic loss of about 95 eV. This unusually large loss has a constant value over a wide range of primary energies (1.5-4.5 keV). An extra peculiarity is that the peak is only observed for the scattering in normal incidence towards the (2 1 1) plane. It is also not seen for polycrystalline W. The energy loss may be due to a quasi-double or -triple collisions of He particles with the row-trough structure of W(2 1 1) involving electronic excitation of both He and W atoms. Alternatively it may be due to a special channeling/dechanneling process for the incident ions. (C) 2010 Elsevier B.V. All rights reserved.
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收藏
页码：2433 / 2436
页数：4
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