Eur. Phys. J. AP 8, 189-194 (1999)
https://doi.org/10.1051/epjap:1999246

Ultra-fast optical pyrometry for the measurement of detonating explosive temperature

¹ DGA/Centre d'Etudes de Gramat, 46500 Gramat, France
² ENSMA/Laboratoire de Combustion et Détonique, 86960 Futuroscope, France

Corresponding authors: crouzetb@aol.com bauding@cegramat.fr

Received: 10 February 1999
Revised: 26 July 1999
Accepted: 13 September 1999
Published online: 15 September 1999

Abstract

This paper describes a multiwavelength optical pyrometer designed to measure, with a 3 ns rise-time, the evolution of a fast varying temperature as can be encountered in the detonation products of an explosive. By measuring six luminance temperatures within the visible and near infra-red spectra, this apparatus allows to determine a true surface temperature over the range 1500 to 6000 K. It has been used for studies of detonation in nitromethane, a transparent liquid explosive.