Threshold ionization laws for electron-hydrogen scattering and their dominant region of configuration space

被引：14

作者：

Bartlett, PL ^{[1
]}

Stelbovics, AT ^{[1
]}

Bray, I ^{[1
]}

机构：

[1] Murdoch Univ, Ctr Atom Mol & Surface Phys, Perth, WA 6150, Australia

来源：

PHYSICAL REVIEW A | 2003年 / 68卷 / 03期

关键词：

D O I：

10.1103/PhysRevA.68.030701

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A fully quantal calculation of the S-1 three-body wave function is performed for the Wannier model of electron-hydrogen scattering in the near-ionization threshold region using an exterior complex scaling method. The region of configuration space of the wave function that provides the dominant contribution to the total ionization cross section is demonstrated to be r(1)approximate tor(2) in accord with the argument of Rau [Phys. Rev. A 4, 207 (1971)], but only in the so-called Coulomb zone. The work confirms to a high precision (E1.128+/-0.004) the Wannier threshold law for the total ionization cross section, which is strictly valid only at the threshold. A threshold law for the S-3 total ionization cross section is determined to be E3.37+/-0.02, in agreement with the semiclassical calculations of Peterkop [J. Phys. B 16, L587 (1983)].

引用

页数：4

共 22 条

[1] Electron-impact ionization of atomic hydrogen [J].

Baertschy, M. ;

Rescigno, T.N. ;

Isaacs, W.A. ;

Li, X. ;

McCurdy, C.W. .

2001, American Inst of Physics, Woodbury (63)

[2] Accurate amplitudes for electron-impact ionization [J].

Baertschy, M., 2001, American Institute of Physics Inc. (64)

[3] QUANTAL THRESHOLD IONIZATION [J].

CROTHERS, DSF .

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 1986, 19 (04) :463-483

[4]

Jones S, 2002, PHYS REV A, V66, DOI 10.1103/PhysRevA.66.032717

[5] Complete numerical solution of electron-hydrogen model collision problem above the ionization threshold [J].

Jones, S ;

Stelbovics, AT .

PHYSICAL REVIEW LETTERS, 2000, 84 (09) :1878-1881

[6] Ab initio study of interelectronic correlations in electron-impact ionization of hydrogen [J].

Kato, D ;

Watanabe, S .

PHYSICAL REVIEW A, 1997, 56 (05) :3687-3700

[7] Fully quantal treatment of the ionization threshold law: e+H with frozen angular degrees of freedom [J].

Kato, D ;

Watanabe, S .

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 1996, 29 (22) :L779-L785

[8] Hyperspherical theory of three-particle fragmentation and Wannier's threshold law [J].

Macek, JH ;

Ovchinnikov, SY .

PHYSICAL REVIEW A, 1996, 54 (01) :544-560

[9] Practical calculation of amplitudes for electron-impact ionization [J].

McCurdy, C. William ;

Horner, Daniel A. ;

Rescigno, Thomas N. .

Physical Review A - Atomic, Molecular, and Optical Physics, 2001, 63 (02) :022711-022711

[10] IONIZATION OF H(1S) NEAR THRESHOLD [J].

MCGOWAN, JW ;

CLARKE, EM .

PHYSICAL REVIEW, 1968, 167 (01) :43-&

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