STUDY OF MOLECULAR EFFECTS IN BEAM-FOIL SPECTROSCOPY

被引：20

作者：

ANDRESEN, B ^{[1
]}

HULTBERG, S ^{[1
]}

JELENKOVIC, B ^{[1
]}

LILJEBY, L ^{[1
]}

MANNERVIK, S ^{[1
]}

VEJE, E ^{[1
]}

机构：

[1] RES INST PHYS,S-10405 STOCKHOLM,SWEDEN

来源：

PHYSICA SCRIPTA | 1979年 / 19卷 / 04期

关键词：

D O I：

10.1088/0031-8949/19/4/007

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Relative populations of ns + nd levels in hydrogen as functions of the principal quantum number n have been measured with beams of H+, H2+, and H3+impinging on thin carbon foils at 25 keV/amu and 100 keV/amu. Enhancements of 20% and 45% for dimer and trimer clusters are observed uniformly for all levels. A possible explanation in terms of screening of the Coulomb repulsion between the protons inside the foil, thus reducing the effective thickness of the foil, is given. All relative populations closely follow an nppower law with p = - 4.0 and - 3.7 at 25 keV/amu and 100 keV/amu, respectively, in perfect analogy with atomic collision experiments. O+/O2+-foil excitations at 100 keV and 155 keV show a similar moleculareffect, but in reverse with a larger mean charge produced by the dimer. © 1979 IOP Publishing Ltd.

引用

页码：335 / 338

页数：4

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