ELECTRON-SCATTERING IN HELIUM AT LOW ENERGIES - A 29-STATE R-MATRIX CALCULATION

被引:33
作者
SAWEY, PMJ
BERRINGTON, KA
BURKE, PG
KINGSTON, AE
机构
[1] Department of Applied Mathematics and Theoretical Physics, Queen’s University of Belfast
关键词
D O I
10.1088/0953-4075/23/23/014
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
A new low-energy 29-state R-matrix calculation including the n less-than-or-equal-to 5 states of neutral helium is reported. The 1(1)S-2(3,1)S transitions are re-examined and we show that the close-coupling expansion has converged for these transitions below the ionization threshold. In addition, collision strengths for transitions from the ground state to n = 4 states are presented for the first time.
引用
收藏
页码:4321 / 4329
页数:9
相关论文
共 15 条
[1]   ELECTRON-EXCITATION FROM THE 11S, 23S AND 21S STATES OF HELIUM - AN 11-STATE R-MATRIX CALCULATION [J].
BERRINGTON, KA ;
BURKE, PG ;
FREITAS, LCG ;
KINGSTON, AE .
JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 1985, 18 (20) :4135-4147
[2]   LOW-ENERGY SCATTERING OF ELECTRONS BY HELIUM-ATOMS [J].
BERRINGTON, KA ;
BURKE, PG ;
SINFAILAM, AL .
JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 1975, 8 (09) :1459-1473
[3]   NEW VERSION OF GENERAL PROGRAM TO CALCULATE ATOMIC CONTINUUM PROCESSES USING R-MATRIX METHOD [J].
BERRINGTON, KA ;
BURKE, PG ;
LEDOURNEUF, M ;
ROBB, WD ;
TAYLOR, KT ;
LAN, VK .
COMPUTER PHYSICS COMMUNICATIONS, 1978, 14 (5-6) :367-412
[4]   ELECTRON-EXCITATION IN HELIUM - INCLUDING THE N = 4 LEVELS IN AN R-MATRIX CALCULATION [J].
BERRINGTON, KA ;
KINGSTON, AE .
JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 1987, 20 (24) :6631-6640
[5]   TOTAL ELECTRON-IMPACT EXCITATION CROSS-SECTIONS OF HELIUM [J].
BRONGERSMA, HH ;
BACKX, C ;
KNOOP, FWE .
CHEMICAL PHYSICS LETTERS, 1972, 13 (01) :16-+
[6]   R-MATRIX THEORY OF ELECTRON-SCATTERING AT INTERMEDIATE ENERGIES [J].
BURKE, PG ;
NOBLE, CJ ;
SCOTT, P .
PROCEEDINGS OF THE ROYAL SOCIETY OF LONDON SERIES A-MATHEMATICAL AND PHYSICAL SCIENCES, 1987, 410 (1839) :289-310
[7]   AN 11-STATE ELECTRON HELIUM SCATTERING CALCULATION [J].
FREITAS, LCG ;
BERRINGTON, KA ;
BURKE, PG ;
HIBBERT, A ;
KINGSTON, AE ;
SINFAILAM, AL .
JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 1984, 17 (09) :L303-L309
[8]   CIV3 - GENERAL PROGRAM TO CALCULATE CONFIGURATION INTERACTION WAVE-FUNCTIONS AND ELECTRIC-DIPOLE OSCILLATOR-STRENGTHS [J].
HIBBERT, A .
COMPUTER PHYSICS COMMUNICATIONS, 1975, 9 (03) :141-172
[9]   NEAR-THRESHOLD EXCITATION OF HE 23S BY ELECTRON-IMPACT [J].
JOHNSTON, AR ;
BURROW, PD .
JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 1983, 16 (04) :613-628
[10]  
Martin W. C., 1973, Journal of Physical and Chemical Reference Data, V2, P257, DOI 10.1063/1.3253119