1ST-ORDER APPROXIMATIONS FOR POSITRONIUM FORMATION IN ATOMIC-HYDROGEN

被引：28

作者：

MANDAL, P

GUHA, S

机构：

[1] Department of Theoretical Physics, Indian Association for the Cultivation of Science, Jadavpur, Calcutta

来源：

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS | 1979年 / 12卷 / 09期

关键词：

D O I：

10.1088/0022-3700/12/9/012

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A class of first-order approximations-the first Born approximation, the first-order exchange approximation and the modified Born approximation-are applied to study the rearrangement collision process: e++H(1s) to (e+e-)(1s)+H+. Numerical results for the differential and total cross sections are presented for the positron energy range 8.704-2000 eV. The differential cross section in the first Born approximation shows quite different features from that given by the other two cases. It is believed from a comparison of the results at 2000 eV that the high-energy dependence of the cross sections may not be determined by the first Born approximation.

引用

页码：1603 / 1611

页数：9

共 24 条

[1]

BASSEL RH, 1960, PHYS REV, V117, P747

[2] POSITRON-HYDROGEN SCATTERING USING AN INTEGRAL APPROACH [J].

BASU, D ;

BANERJI, G ;

GHOSH, AS .

PHYSICAL REVIEW A, 1976, 13 (04) :1381-1387

[3] FIRST-ORDER EXCHANGE APPROXIMATION [J].

BELL, KL ;

MOISEIWITSCH, BL .

PROCEEDINGS OF THE ROYAL SOCIETY OF LONDON SERIES A-MATHEMATICAL AND PHYSICAL SCIENCES, 1963, 276 (1364) :346-+

[4]

BRANDSEN BH, 1972, REP PROG PHYS, V185, P541

[5]

BRANDSEN BH, 1970, ATOMIC COLLISION THE, P264

[6]

Bransden B.H., 1965, ADV ATOMIC MOL PHYS, V1, P85

[7] POSITRONIUM FORMATION BY POSITRON IMPACT ON HYDROGEN [J].

BRANSDEN, BH ;

JUNDI, Z .

PROCEEDINGS OF THE PHYSICAL SOCIETY OF LONDON, 1967, 92 (578P) :880-&

[8] S-WAVE POSITRON SCATTERING BY HYDROGEN-ATOMS [J].

CHAN, YF ;

FRASER, PA .

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 1973, 6 (12) :2504-2515

[9] INELASTIC P-WAVE POSITRON-HYDROGEN SCATTERING [J].

CHAN, YF ;

MCEACHRAN, RP .

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 1976, 9 (16) :2869-2875

[10] POSITRONIUM FORMATION BY FAST POSITRONS IN ATOMIC HYDROGEN [J].

CHESHIRE, IM .

PROCEEDINGS OF THE PHYSICAL SOCIETY OF LONDON, 1964, 83 (5322) :227-&

← 1 2 3 →