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Proceedings Paper

Quartz gauge and ballistic pendulum measurements of the mechanical impulse imparted to a target by a laser pulse
Author(s): Jean-Yves David; J. C. Wettling; Patrick Combis; G. Nierat; M. Rostaing
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Paper Abstract

A laser impact striking a target with a sufficient irradiance generateg a thermo-shock. It is possible to measure the amplitude of this shock as a function of time with a quartz gauge . The integration of this pressure signal gives a first estimate of the mechanical impulse imparted to the target. It is also possible to achieve this by measuring the speed of the gravity centre of a ballistic pendulum. The momentum amount of the mobile set m?v? is a first approximation of the mechanical impulse. However,for more accurate measurement it is necessary to take into account the moment of inertia and the position of the gravity centre with respect to the rotation axis.

Paper Details

Date Published: 1 February 1991
PDF: 4 pages
Proc. SPIE 1397, 8th Intl Symp on Gas Flow and Chemical Lasers, (1 February 1991); doi: 10.1117/12.25960
Show Author Affiliations
Jean-Yves David, Ctr. d'Etudes de Limeil-Valenton (France)
J. C. Wettling, Ctr. d'Etudes de Limeil-Valenton (France)
Patrick Combis, Ctr. d'Etudes de Limeil-Valenton (France)
G. Nierat, Ctr. d'Etudes de Limeil-Valenton (France)
M. Rostaing, Ctr. d'Etudes de Limeil-Valenton (France)


Published in SPIE Proceedings Vol. 1397:
8th Intl Symp on Gas Flow and Chemical Lasers

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