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Proceedings Paper

Investigation on momentum coupling coefficient for a parabolic shell
Author(s): Rongqing Tan; Yijun Zheng; Changjun Ke; Kuohai Zhang; Donglei Wang; Chongyi Wan; Shiming Liu; Jin Wu
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Paper Abstract

Momentum coupling coefficients of TEA CO2 laser pulses for a parabolic aluminum shell were investigated. Momentum coupling coefficients were measured with a pendulum in a chamber, the energy of the incident laser pulse was varied from 8.3J to 50.9J, and the gas pressure in the chamber was changed from 100 kPa to 20 kPa in our experiments. Experimental data were analyzed thoroughly. It was found that the coupling coefficients under the air pressure of 100kPa decreased very slowly from 242 N/MW to 170 N/MW for the incident energy from 50.9J to 15.1J but decreased sharply for the energy between 15.1 J to 13.8 J. And it was different for the air pressure below 100 kPa. Indoor free flight of our parabolic shell was also analyzed, coupling coefficients and some other parameters were deduced from the experimental data.

Paper Details

Date Published: 12 May 2008
PDF: 6 pages
Proc. SPIE 7005, High-Power Laser Ablation VII, 70052R (12 May 2008); doi: 10.1117/12.785898
Show Author Affiliations
Rongqing Tan, Institute of Electronics (China)
Yijun Zheng, Institute of Electronics (China)
Changjun Ke, Institute of Electronics (China)
Kuohai Zhang, Institute of Electronics (China)
Donglei Wang, Institute of Electronics (China)
Chongyi Wan, Institute of Electronics (China)
Shiming Liu, Institute of Electronics (China)
Jin Wu, Institute of Electronics (China)

Published in SPIE Proceedings Vol. 7005:
High-Power Laser Ablation VII
Claude R. Phipps, Editor(s)

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