Coherent excitation of the 41F state of helium by electron impact

被引：8

作者：

Cvejanovic, D ^{[1
]}

Crowe, A ^{[1
]}

机构：

[1] Univ Newcastle Upon Tyne, Dept Phys, Newcastle Upon Tyne NE1 7RU, Tyne & Wear, England

来源：

PHYSICAL REVIEW LETTERS | 1998年 / 80卷 / 14期

关键词：

D O I：

10.1103/PhysRevLett.80.3033

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The Stokes parameters P-1, P-2, P-3, and Pq have been measured in a scattered electron-polarized cascade photon correlation study of the 4(1)F state of helium excited by 29.6 eV electron impact. This is the first detailed experimental study of electron impact excitation leading to the transfer of three units of angular momentum. The data are expected to be influenced by the breakdown of LS coupling for L greater than or equal to 3 states, even in a simple system like helium, providing a further challenge for theory.

引用

页码：3033 / 3036

页数：4

共 25 条

[1] COLLISIONAL ALIGNMENT AND ORIENTATION OF ATOMIC OUTER SHELLS .1. DIRECT EXCITATION BY ELECTRON AND ATOM IMPACT [J].

ANDERSEN, N ;

GALLAGHER, JW ;

HERTEL, IV .

PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS, 1988, 165 (1-2) :1-188

[2] Collisional excitation of atomic D states [J].

Andersen, N ;

Bartschat, K .

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 1997, 30 (22) :5071-5097

[3]

Andersen N, 1996, ADV ATOM MOL OPT PHY, V36, P1, DOI 10.1016/S1049-250X(08)60207-4

[4] EXCITATION OF 31,3D AND 41,3F LEVELS OF HELIUM BY DIRECT ELECTRON IMPACT AND 41P-]41,3F COLLISIONAL TRANSFER [J].

ANDERSON, RJ ;

HUGHES, RH ;

NORTON, TG .

PHYSICAL REVIEW, 1969, 181 (01) :198-&

[5] Differential cross sections and electron-impact coherence parameters for electron scattering from helium atoms [J].

Bartschat, K ;

Hudson, ET ;

Scott, MP ;

Burke, PG ;

Burke, VM .

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 1996, 29 (13) :2875-2885

[6]

Bederson B., 1969, Comments on Atomic and Molecular Physics, V1, P65

[7]

Bederson B., 1969, Comments on Atomic and Molecular Physics, V1, P41

[8]

BRAY I, COMMUNICATION

[9]

CVEJANOVIC D, IN PRESS

[10] A COMPLETE POLARIZATION CORRELATION-ANALYSIS OF THE 3(1)D STATE OF HELIUM EXCITED BY ELECTRON-IMPACT [J].

DONNELLY, BP ;

MCLAUGHLIN, DT ;

CROWE, A .

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 1994, 27 (02) :319-328

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