| Autor: |
ZHANG, Q., KOBAYASHI, Y., HELLMUTH, E. W., JEAN, Y. C., ZHANG, Q., KOBAYASHI, Y., HELLMUTH, E. W., JEAN, Y. C. |
| Zdroj: |
Journal de Physique IV - Proceedings; December 1993, Vol. 3 Issue: 1 pC4-105-C4-111, 1054108p |
| Abstrakt: |
The magnetic quenching of ortho-positronium (o-Ps) has been studied for the solutions of nitrobenzene in n- and iso-octane (2, 2, 4-trimethylpentane). Static magnetic fields up to 20 kG were applied to the solutions and the lifetime of the m = 0 state of o-Ps was determined as a function of the field strength at 24, 50, and 77°C. The observed lifetime of o-Ps substantially deviates from the quadratic Zeeman effect in iso-octane solutions (0.1 and 0.2 M) in the range of several kG at 24 and 50°C. A small deviation appears at 24°C and 50°C but disappears at 77°C in n-octane solution (0.3 M). It is suggested that particular bound states formed during the attachment-detachment of o-Ps on nitrobenzene in a solution with a certain range of surface tension may be responsible for the deviation from the quadratic Zeeman effect. |
| Databáze: |
Supplemental Index |
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