Fast Imaging
Advanced Diagnostics Navigation
- Atomic and molecular species, positive and negative ions
- Laser-Induced Fluorescence (LIF) and Two-Photon Absorption LIF (TALIF)
- Characterization of plasma, chemical composition and dynamic behavior
- Electron velocity distribution function, gas flow velocity and temperature
- Electric field and space potential
- Nanoparticle Diagnostics
- Surface Diagnostics
Fast Imaging
Diagnostics for evolution of short processes on time-scale of below ns (i.e. ionization wave propagation)
Diagnostics for bulk plasma fluctuations at rate of 500 frames per second
Spectral imaging 2-D distribution of specific species
![](https://pcrf.princeton.edu/wp-content/uploads/sites/772/2020/08/libds.png)
Imaging diagnostics will be utilized to monitor the dynamic behavior of the plasma, including entire system and selected species. For the latter, fitting the camera with a narrow bandpass optical filter allows monitoring the spatial and temporal evolution of certain atomic molecular and atomic species (see spectral imaging example below).
![](https://pcrf.princeton.edu/wp-content/uploads/sites/772/2020/08/un-2.png)
PPPL lab is equipped with nanosecond ICCD cameras, capable working with minimal exposure of 2-3 ns (Andor iStar and PiMax 3) and with a camera (4Picos) having a minimal exposure of 200 ps. These cameras are suitable for capturing the evolution of short and low-light processes in plasmas.
![](https://pcrf.princeton.edu/wp-content/uploads/sites/772/2020/08/un.jpg)
Times on each image are given with respect to laser shot (captured with PiMax3)
PPPL lab is also equipped with a fast-framing Phantom V7.3 camera, capable of operating at 500k frames per second rate, with minimal exposure of 1 μs. The fast framing camera is suitable for tracking bulk movement of plasma, oscillations and striations formation in the plasmas, especially the non-repetitive behaviors.
![](https://pcrf.princeton.edu/wp-content/uploads/sites/772/2020/08/tag-1.jpg)
![](https://pcrf.princeton.edu/wp-content/uploads/sites/772/2020/08/PPPL-LOGO-W-BALL-TRANSPARENT_1945_681.png)