Relativistic effects on the H- resonances converging to the H(n = 2) threshold

被引:26
作者
Lindroth, E [1 ]
Burgers, A [1 ]
Brandefelt, N [1 ]
机构
[1] Univ Stockholm, Dept Atom Phys, S-10405 Stockholm, Sweden
来源
PHYSICAL REVIEW A | 1998年 / 57卷 / 02期
关键词
D O I
10.1103/PhysRevA.57.R685
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
The series of H- resonances of P-1(o) symmetry predicted to converge exponentially to all thresholds has been investigated below the H(n=2) threshold. It is shown that the series will be terminated already after the third resonance when the relativistic and radiative splitting of the H(n=2) states is considered. Resonance parameters of this third resonance have been calculated with highly correlated wave functions. The resonance is predicted to be situated 19 mu eV below H(2p(1/2)) with a width of 0.06 mu eV. Accurate resonance parameters are also given for the first two resonances and the photoabsorption cross section is calculated for the threshold region.
引用
收藏
页码:R685 / R688
页数:4
相关论文
共 15 条
[1]   Positions and isotope shifts of the H-(P-1(0)) dipole resonances below the H(n=2) threshold [J].
Andersen, HH ;
Balling, P ;
Kristensen, P ;
Pedersen, UV ;
Aseyev, SA ;
Petrunin, VV ;
Andersen, T .
PHYSICAL REVIEW LETTERS, 1997, 79 (24) :4770-4773
[2]   Vacuum ultraviolet spectroscopy of H- in a heavy ion storage ring: The region near the H(n=2) threshold [J].
Balling, P ;
Kristensen, P ;
Andersen, HH ;
Pedersen, UV ;
Petrunin, VV ;
Praestegaard, L ;
Haugen, HK ;
Andersen, T .
PHYSICAL REVIEW LETTERS, 1996, 77 (14) :2905-2908
[3]   HIGHLY DOUBLY-EXCITED S-STATES OF THE HELIUM ATOM [J].
BURGERS, A ;
WINTGEN, D ;
ROST, JM .
JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 1995, 28 (15) :3163-3183
[4]   Doubly excited resonant states in H- below the n=2 hydrogen threshold [J].
Chen, MK .
JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 1997, 30 (07) :1669-1676
[6]   INFLUENCE OF CLOSE COUPLING ON THRESHOLD BEHAVIOUR OF CROSS SECTIONS OF ELECTRON-HYDROGEN SCATTERING [J].
GAILITIS, M ;
DAMBURG, R .
PROCEEDINGS OF THE PHYSICAL SOCIETY OF LONDON, 1963, 82 (526) :192-&
[7]   COMPARISON OF DOUBLY-EXCITED HELIUM ENERGY-LEVELS, ISOELECTRONIC SERIES, AUTOIONIZATION LIFETIMES, AND GROUP-THEORETICAL CONFIGURATION-MIXING PREDICTIONS WITH LARGE-CONFIGURATION-INTERACTION CALCULATIONS AND EXPERIMENTAL SPECTRA [J].
HERRICK, DR ;
SINANOGLU, O .
PHYSICAL REVIEW A, 1975, 11 (01) :97-110
[8]   THE LAMB SHIFT IN HYDROGEN-LIKE ATOMS, 1 LESS-THAN-OR-EQUAL-TO Z LESS-THAN-OR-EQUAL-TO 110 [J].
JOHNSON, WR ;
SOFF, G .
ATOMIC DATA AND NUCLEAR DATA TABLES, 1985, 33 (03) :405-446
[9]   CLASSIFICATION AND SUPERMULTIPLET STRUCTURE OF DOUBLY EXCITED-STATES [J].
LIN, CD .
PHYSICAL REVIEW A, 1984, 29 (03) :1019-1033
[10]   PHOTODETACHMENT OF H- AND LI- [J].
LINDROTH, E .
PHYSICAL REVIEW A, 1995, 52 (04) :2737-2749