ANOMALOUS MAGNETIC QUENCHING OF ORTHO-POSITRONIUM IN A SOLUTION OF NITROBENZENE IN ISOOCTANE

被引：8

作者：

KOBAYASHI, Y ^{[1
]}

ZHANG, Q ^{[1
]}

MAHMOOD, T ^{[1
]}

SHEN, SY ^{[1
]}

JEAN, YC ^{[1
]}

机构：

[1] UNIV MISSOURI,DEPT CHEM,KANSAS CITY,MO 64110

来源：

CHEMICAL PHYSICS LETTERS | 1992年 / 197卷 / 1-2期

关键词：

D O I：

10.1016/0009-2614(92)86036-H

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：

The magnetic quenching of ortho-positronium (o-Ps) has been studied for a 0.1 M solution of nitrobenzene in isooctane (2,2,4-trimethylpentane). Static magnetic fields up to 6.2 kG were applied to the solution and the lifetime of the m = 0 state of o-Ps was determined as a function of the field strength at 2, 24 and 50-degrees-C. It was found that the lifetime is decreased to a much greater extent than is expected from the quadratic Zeeman effect, as in the reported case of nitrobenzene in n-hexane. It is suggested that particular bound states formed during the attachment-detachment of o-Ps on nitrobenzene in a solution with a low surface tension may be responsible for the anomalous effect.

引用

页码：141 / 144

页数：4

共 16 条

[1] FORMATION AND STABILITY OF A COMPLEX OF POSITRONIUM WITH NITROBENZENE FROM THE STUDY OF THE MAGNETIC-FIELD EFFECTS [J].