THE EFFECT OF POSITRONIUM FORMATION IN POSITRON ALKALI-ATOM SCATTERING

被引：7

作者：

RAY, H ^{[1
]}

ADHIKARI, SK ^{[1
]}

GHOSH, AS ^{[1
]}

机构：

[1] UNIV ESTADUAL PAULISTA,INST FIS TEOR,BR-01405 SAO PAULO,BRAZIL

来源：

CHEMICAL PHYSICS LETTERS | 1994年 / 227卷 / 4-5期

关键词：

D O I：

10.1016/0009-2614(94)00846-9

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We study e+-Na, e+-K, and e+-Rb scattering using the close coupling approach in the static and coupled static expansion schemes. We calculate partial wave elastic scattering phase shifts and total elastic and Ps formation cross sections up to an incident positron energy of 100 eV. The effect of the positronium formation channel on the elastic channel is found to be strong in all cases up to an incident positron energy of 10 eV. We also make an estimate of the total cross section which exhibits a minimum as a function of energy at low energies.

引用

页码：429 / 435

页数：7

共 23 条

[1]

Adhikari S. K., 1991, DYNAMICAL COLLISION

[2] THE EFFECT OF POSITRONIUM FORMATION IN E(+)-LI AND E(+)-NA SCATTERING [J].

ADHIKARI, SK ;

GHOSH, AS ;

RAY, H .

CHEMICAL PHYSICS LETTERS, 1994, 222 (03) :302-308

[3] IONIZATION OF A LITHIUM ATOM BY POSITRON IMPACT [J].

BASU, M ;

GHOSH, AS .

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 1986, 19 (08) :1249-1251

[4] POSITRON-LITHIUM SCATTERING AT LOW AND INTERMEDIATE ENERGIES [J].

BASU, M ;

GHOSH, AS .

PHYSICAL REVIEW A, 1991, 43 (09) :4746-4750

[5] POSITRON HYDROGEN SCATTERING INCLUDING SHORT-RANGE AND LONG-RANGE CORRELATIONS [J].

BASU, M ;

MUKHERJEE, M ;

GHOSH, AS .

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 1989, 22 (13) :2195-2204

[6]

CLEMENTI E, 1974, ATOM DATA NUCL DATA, V14, P187

[7] FESHBACH RESONANCES IN POSITRON-HYDROGEN SCATTERING [J].

DRACHMAN, RJ .

PHYSICAL REVIEW A, 1975, 12 (01) :340-344

[8] POSITRON-HYDROGEN ELASTIC-SCATTERING WITH INCLUSION OF LONG-RANGE EFFECTS VIA A PSEUDOSTATE EXPANSION [J].

FON, WC ;

GALLAHER, DF .

JOURNAL OF PHYSICS PART B ATOMIC AND MOLECULAR PHYSICS, 1972, 5 (05) :943-&

[9] POSITRON ATOM AND POSITRON MOLECULE COLLISIONS [J].

GHOSH, AS ;

SIL, NC ;

MANDAL, P .

PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS, 1982, 87 (07) :313-406

[10] POSITRON-LITHIUM-ATOM COLLISIONS USING THE 2-STATE APPROXIMATION [J].

GUHA, S ;

GHOSH, AS .

PHYSICAL REVIEW A, 1981, 23 (02) :743-750

← 1 2 3 →