Interference effects in electron emission from H2 by 3 and 5 MeV H+ impact

被引：41

作者：

Hossain, S ^{[1
]}

Alnaser, AS

Landers, AL

Pole, DJ

Knutson, H

Robison, A

Stamper, B

Stolterfoht, N

Tanis, JA

机构：

[1] Western Michigan Univ, Dept Phys, Kalamazoo, MI 49008 USA

[2] Johns Hopkins Univ, Baltimore, MD 21218 USA

[3] Kalamazoo Area Math & Sci Ctr, Kalamazoo, MI 49001 USA

[4] Hahn Meitner Inst Berlin GmbH, D-14109 Berlin, Germany

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS | 2003年 / 205卷

关键词：

interference effects; ionization; ion-atom and ion-molecule interactions;

D O I：

10.1016/S0168-583X(02)01933-X

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

Interference effects are expected to occur when electrons are emitted coherently within a multi-center molecular field. This phenomenon is analogous to Young's two-slit experiment. The present work focuses on ionization of H,, a molecule composed of two indistinguishable centers, by 3 and 5 MeV H+ impact. A parallel-plate electron spectrometer was used to investigate electron emission in the range similar to3-250 eV at observation angles of 30degrees, 45degrees, 90degrees, 135degrees and 150degrees with respect to the incident beam. To help identify interference effects, experimental cross-sections were normalized to CDW-EIS calculations for electron emission from two independent H atoms. A sinusoidal-like variation was observed in the normalized electron emission yield for electron energies less than similar to250 eV in general agreement with model calculations. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：484 / 487

页数：4

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