Four-dimensional (4D) tracking of high-temperature microparticles

Journal Article · Tue Nov 15 00:00:00 EST 2016 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.4955280· OSTI ID:22596634

Wang, Zhehui; Liu, Q.; Waganaar, W. ^[1]; Fontanese, J.; James, D.; Munsat, T. ^[2]

---

1. Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)
2. University of Colorado, Boulder, Colorado 80309 (United States)

High-speed tracking of hot and molten microparticles in motion provides rich information about burning plasmas in magnetic fusion. An exploding-wire apparatus is used to produce moving high-temperature metallic microparticles and to develop four-dimensional (4D) or time-resolved 3D particle tracking techniques. The pinhole camera model and algorithms developed for computer vision are used for scene calibration and 4D reconstructions. 3D positions and velocities are then derived for different microparticles. Velocity resolution approaches 0.1 m/s by using the local constant velocity approximation.

• OSTI ID: 22596634
• Journal Information: Review of Scientific Instruments, Vol. 87, Issue 11; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA); ISSN 0034-6748
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ALGORITHMS
APPROXIMATIONS
CALIBRATION
CAMERAS
COMPUTERS
EQUIPMENT
EXPLODING WIRES
FOUR-DIMENSIONAL CALCULATIONS
PARTICLES
PLASMA
TEMPERATURE RANGE 0400-1000 K
THREE-DIMENSIONAL CALCULATIONS
TIME RESOLUTION
VELOCITY