Positron lifetime measurements were performed on eight different amino acids, τ1, τ2 and I2 values were observed at around 0.35 nsec, 0.7-1.2 nsec and 20-30%, respectively. The long-lived component seems to be produced by positronium states trapped in the crystalline lattice or by positronium atoms bound to molecules.
ASJC Scopus subject areas
- Physics and Astronomy(all)
- Physical and Theoretical Chemistry