Micellar effects on positronium lifetime in aqueous SDS solutions

Szabolcs Vass, Z. Kajcsos, Béla Molnár, László Marczis, Christophoros Stergiopoulos

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Positron lifetime measurements have been performed in aqueous SDS (sodium dodecyl sulphate) solutions. The lifetime distributions measured by fast-slow coincidence technique have been found to be influenced by surfactant concentration, which varied in the range of 1.25 × 10-3 -3.2 × 10-1 mol/dm3(i.e. 2.27 × 10-5 -5.82 × 10-3 mole fractions). The lifetime of the long living component connected to positronium formation and decay increases with increasing surfactant concentration. Lifetime data suggest that a direct positronium-micelle electron-exchange reaction leading to pick-off annihilation is contra-indicated.

Original languageEnglish
Pages (from-to)285-288
Number of pages4
JournalNuclear Instruments and Methods In Physics Research
Volume199
Issue number1-2
DOIs
Publication statusPublished - Aug 1 1982

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Sodium dodecyl sulfate
Surface active agents
Positrons
Micelles
Electrons

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Micellar effects on positronium lifetime in aqueous SDS solutions. / Vass, Szabolcs; Kajcsos, Z.; Molnár, Béla; Marczis, László; Stergiopoulos, Christophoros.

In: Nuclear Instruments and Methods In Physics Research, Vol. 199, No. 1-2, 01.08.1982, p. 285-288.

Research output: Contribution to journalArticle

Vass, Szabolcs ; Kajcsos, Z. ; Molnár, Béla ; Marczis, László ; Stergiopoulos, Christophoros. / Micellar effects on positronium lifetime in aqueous SDS solutions. In: Nuclear Instruments and Methods In Physics Research. 1982 ; Vol. 199, No. 1-2. pp. 285-288.
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