Share Email Print
cover

Proceedings Paper

Optical probing of rapid velocity change of miniature object
Author(s): Hongliang He; Tsunehiro Kobayashi; T. Sekine
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

Ablative acceleration properties of laser-driven foil plates (Al, 10 and 18 micrometer-thick and 1 to approximately 2 mm in diameter) have been studied experimentally at laser irradiance from 30 to 400 GW/cm2. Push-pull type VISAR (Velocity Interferometer System for Any Reflector) was utilized for the measurement, but an optical recording system was developed to provide sub-nanosecond time resolution. For the 18 micrometer- thick Al foil irradiated at 360 GW/cm2, ablative accelerations up to terminal velocity of about 10 km/s within 30 ns has been determined with a velocity uncertainty of approximately 2%. The acceleration rate detected in the experiments is (0.2 to approximately 0.6)X 1012 m/s2, which is about 1011 times of the acceleration by the gravity.

Paper Details

Date Published: 17 April 2001
PDF: 4 pages
Proc. SPIE 4183, 24th International Congress on High-Speed Photography and Photonics, (17 April 2001); doi: 10.1117/12.424314
Show Author Affiliations
Hongliang He, National Institute for Research in Inorganic Materials (Japan)
Tsunehiro Kobayashi, National Institute for Research in Inorganic Materials (Japan)
T. Sekine, National Institute for Research in Inorganic Materials (Japan)


Published in SPIE Proceedings Vol. 4183:
24th International Congress on High-Speed Photography and Photonics
Kazuyoshi Takayama; Tsutomo Saito; Harald Kleine; Eugene V. Timofeev, Editor(s)

© SPIE. Terms of Use
Back to Top