Two-Exponential Decay of Acridine Orange
Abstract
In this work, we experimentally study the fluorescence decay of acridine orange at late times to test whether late-time power-law behaviour emerges — a feature expected to be very small but consistent with quantum mechanical and quantum field theoretical predictions. Using two distinct photon detectors, we find that the data are well described by the sum of two exponential functions with lifetimes τ1 = 1.7331 ± 0.001 ns and τ2 = 5.948 ± 0.012 ns, in agreement with values reported in the literature. Although no deviation from the exponential decay law is observed, this study serves as a reliable test of the experimental setup and enables a precise determination of the sample lifetimes.
Fields of Study & Subjects
Quantum Mechanics and Applications
Quantum optics and atomic interactions
Chemical and Physical Properties of Materials
Publication details
- Journal / source
- Acta Physica Polonica A
- Publisher
- Institute of Physics, Polish Academy of Sciences
- Volume
- 148
- Issue
- 6
- Pages
- S110–S110
- Publication date
- 14 January 2026