A new data processing technique for Rayleigh-Taylor instability growth experiments
- Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang, Sichuan 621900 (China)
- Institute of Applied Physics and Computational Mathematics, Beijing 100094 (China)
Typical face-on experiments for Rayleigh-Taylor instability study involve the time-resolved radiography of an accelerated foil with line-of-sight of the radiography along the direction of motion. The usual method which derives perturbation amplitudes from the face-on images reverses the actual image transmission procedure, so the obtained results will have a large error in the case of large optical depth. In order to improve the accuracy of data processing, a new data processing technique has been developed to process the face-on images. This technique based on convolution theorem, refined solutions of optical depth can be achieved by solving equations. Furthermore, we discuss both techniques for image processing, including the influence of modulation transfer function of imaging system and the backlighter spatial profile. Besides, we use the two methods to the process the experimental results in Shenguang-II laser facility and the comparison shows that the new method effectively improve the accuracy of data processing.
- OSTI ID:
- 22611547
- Journal Information:
- AIP Advances, Vol. 6, Issue 6; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA); ISSN 2158-3226
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ACCURACY
AMPLITUDES
COMPARATIVE EVALUATIONS
DATA PROCESSING
DISTURBANCES
EQUATIONS
ERRORS
FOILS
IMAGE PROCESSING
IMAGES
LASER RADIATION
MODULATION
PERTURBATION THEORY
RAYLEIGH-TAYLOR INSTABILITY
TIME RESOLUTION
TRANSFER FUNCTIONS
TRANSMISSION