Exterior complex scaling method applied to doubly excited states of helium

被引：43

作者：

Elander, N ^{[1
]}

Yarevsky, E ^{[1
]}

机构：

[1] Univ Stockholm, Dept Phys, S-11385 Stockholm, Sweden

来源：

PHYSICAL REVIEW A | 1998年 / 57卷 / 04期

关键词：

D O I：

10.1103/PhysRevA.57.3119

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We propose a technique which is suitable for calculations of resonant energies of three-body systems. It is based on a smooth exterior complex scaling procedure and the three-dimensional finite-element method. Accuracy dependencies on an exterior radius and on a curvature of the rotated path are examined. S-wave resonances of helium are calculated with an accuracy better than 10(-5) a.u.

引用

页码：3119 / 3122

页数：4

共 21 条

[1] Finite-element calculations for the three-body Coulomb problem with two equal masses [J].

Ackermann, J ;

Shertzer, J .

PHYSICAL REVIEW A, 1996, 54 (01) :365-371

[2] Finite-element calculations of the antiprotonic helium atom including relativistic and QED corrections [J].

Elander, N ;

Yarevsky, E .

PHYSICAL REVIEW A, 1997, 56 (03) :1855-1864

[3]

HELFFER B, 1989, LECT NOTES PHYSICS, V325, P23609

[4] THE METHOD OF COMPLEX COORDINATE ROTATION AND ITS APPLICATIONS TO ATOMIC COLLISION PROCESSES [J].

HO, YK .

PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS, 1983, 99 (01) :1-68

[5] DOUBLY EXCITED 1SE RESONANCE STATES OF HELIUM-ATOMS BELOW THE N HYDROGENIC THRESHOLDS WITH N-LESS-THAN-OR-EQUAL-TO-6 [J].

HO, YK .

PHYSICAL REVIEW A, 1986, 34 (05) :4402-4404

[6] DELTA'-POTENTIAL ARISING IN EXTERIOR COMPLEX SCALING [J].

KURASOV, PB ;

SCRINZI, A ;

ELANDER, N .

PHYSICAL REVIEW A, 1994, 49 (06) :5095-5097

[7] SIEGERT QUANTIZATION, COMPLEX ROTATION, AND MOLECULAR RESONANCES [J].

LEFEBVRE, R .

JOURNAL OF PHYSICAL CHEMISTRY, 1984, 88 (21) :4839-4844

[8] CALCULATION OF DOUBLY-EXCITED STATES OF HELIUM WITH A FINITE DISCRETE SPECTRUM [J].

LINDROTH, E .

PHYSICAL REVIEW A, 1994, 49 (06) :4473-4480

[9] Approach to electron-impact ionization that avoids the three-body Coulomb asymptotic form [J].

McCurdy, CW ;

Rescigno, TN ;

Byrum, D .

PHYSICAL REVIEW A, 1997, 56 (03) :1958-1969

[10] SOLVING THE TIME-DEPENDENT SCHRODINGER-EQUATION USING COMPLEX-COORDINATE CONTOURS [J].

MCCURDY, CW ;

STROUD, CK ;

WISINSKI, MK .

PHYSICAL REVIEW A, 1991, 43 (11) :5980-5990

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