Fast fluorescence decay of naphthalene induced by Ar ion irradiation
Abstract
A single photon counting system was constructed for a time resolved fluorescence measurement with pulsed heavy ions from the AVF cyclotron in Takasaki Ion Accelerators for Advanced Radiation Application (TIARA). Fluorescence spectra and decay of naphthalene in poly(vinyl butylal) (PVB) film were observed from the irradiation with Ar ions. Though fluorescence spectra were assigned to the first singlet excited state of naphthalene, the decay with Ar ion irradiation were faster than that excited by UV light. This faster decay results from quenching by the transient species produced. The relative initial concentration of the excited state of naphthalene to that of the radicals increases with increasing energy deposited along the incident ion's trajectory.
- Publication:
-
Nuclear Instruments and Methods in Physics Research B
- Pub Date:
- February 1997
- DOI:
- 10.1016/S0168-583X(97)00422-9
- Bibcode:
- 1997NIMPB.132..135T