Related Experiment Video
Updated: May 27, 2026

Quantitative Atomic-Site Analysis of Functional Dopants/Point Defects in Crystalline Materials by Electron-Channeling-Enhanced Microanalysis
Published on: May 10, 2021
Radiative and nonradiative decay rates in chromium-related centers in nanodiamonds
1School of Physics, The University of Melbourne, Parkville, VIC 3010, Australia. sacas@unimelb.edu.au
Abstract:
We address for the first time the measurement of nonradiative decay rates in Cr-related centers in nanodiamonds. Compared to our previous quantum efficiency measurement of Cr centers created in bulk diamond, separate measurements of radiative and nonradiative decay rates in grown nanodiamonds prove more challenging due to size dependence effects. We demonstrate in this Letter that, using defocused dipole imaging and collection efficiency calculation via finite-difference time-domain (FDTD), a quantum efficiency up to 0.9 can be inferred to Cr-related centers showing a 2-level system photon statistics.
Related Concept Videos
Nuclear Stability
To hold positively charged protons together in the...
Types of Radioactivity
Alpha (α) decay is the emission of an α particle from the nucleus. For example, polonium-210 undergoes α decay:
Radioactive Decay and Radiometric Dating
Deactivation Processes: Jablonski Diagram
Radioactivity and Nuclear Equations
A nuclide of an element has a specific number of protons and...
Nuclear Transmutation

