Positronium impact excitation of hydrogen molecule to B1Σu+ and b3Σu+ states

被引：30

作者：

Biswas, PK ^{[1
]}

Adhikari, SK ^{[1
]}

机构：

[1] Univ Estadual Paulista, Inst Fis Teor, BR-01405900 Sao Paulo, Brazil

来源：

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS | 1998年 / 31卷 / 07期

关键词：

D O I：

10.1088/0953-4075/31/7/005

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Calculation for the electronic excitation of the ground state of H-2 to B (1) Sigma(u)(+) and b(3) Sigma(u)(+) states by positronium- (Ps) atom impact has been carried out using the first Born approximation considering discrete Ps excitations up to n = 6 and Ps ionization in the final state. To include the effect of electron exchange, we propose an alternative approximation scheme in the light of the Rudge approach, which takes into account the composite nature of the Ps-atom projectile.

引用

页码：L315 / L320

页数：6

共 23 条

[1] ELECTRONIC EXCITATION OF THE B3-SIGMA-U+ STATE OF H-2 USING THE R-MATRIX METHOD [J].

BALUJA, KL ;

NOBLE, CJ ;

TENNYSON, J .

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 1985, 18 (24) :L851-L855

[2] Excitation and ionisation of the positronium atom in positronium-hydrogen molecule scattering [J].

Biswas, PK ;

Ghosh, AS .

PHYSICS LETTERS A, 1996, 223 (03) :173-178

[3] POSITRON IMPACT PHENOMENA [J].

CHARLTON, M ;

LARICCHIA, G .

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 1990, 23 (07) :1045-1078

[4]

Charlton M., 1991, Comments on Atomic and Molecular Physics, V26, P253

[5] APPLICATION OF CLOSE-COUPLING METHOD TO EXCITATION OF ELECTRONIC STATES AND DISSOCIATION OF H-2 BY ELECTRON-IMPACT [J].

CHUNG, S ;

LIN, CC .

PHYSICAL REVIEW A, 1978, 17 (06) :1874-1891

[6] ELASTIC AND VIBRATIONAL-EXCITATION CROSS-SECTIONS IN THE PS-H2 SCATTERING - A PERTURBATIVE APPROACH [J].

COMI, M ;

PROSPERI, GM ;

ZECCA, A .

NUOVO CIMENTO DELLA SOCIETA ITALIANA DI FISICA D-CONDENSED MATTER ATOMIC MOLECULAR AND CHEMICAL PHYSICS FLUIDS PLASMAS BIOPHYSICS, 1983, 2 (05) :1347-1375

[7] THE INTERACTION OF POSITRONS AND POSITRONIUM WITH SMALL ATOMS [J].

DRACHMAN, RJ .

CANADIAN JOURNAL OF PHYSICS, 1982, 60 (04) :494-502

[8] DISTORTED-WAVE-APPROXIMATION CROSS-SECTIONS FOR EXCITATION OF THE B 3-SIGMA-U+ AND B 1-SIGMA-U+ STATES OF H-2 BY LOW-ENERGY-ELECTRON IMPACT [J].

FLIFLET, AW ;

MCKOY, V .

PHYSICAL REVIEW A, 1980, 21 (06) :1863-1875

[9] Ps beam production and scattering from gaseous targets [J].

Garner, AJ ;

Laricchia, G ;

Ozen, A .

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 1996, 29 (23) :5961-5968

[10] ELECTRON-IMPACT EXCITATION OF H2 (D2) - RESONANCE PHENOMENA ASSOCIATED WITH THE X2-SIGMA-U+ AND B2-SIGMA-G+ STATES OF H2- IN THE 10EV REGION [J].

HALL, RI ;

ANDRIC, L .

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 1984, 17 (18) :3815-3825

← 1 2 3 →