title: Diagnostic system to measure spatial and temporal profiles of shock front using compact two-stage light-gas gun and line reflection method.
abstract: A diagnostic system has been developed to obtain spatial and temporal profiles of shock front. A two-stage light-gas gun is used to accelerate impactors in velocity range with 4-9 km/s. The system consists of the Faraday-type electromagnetic sensors to measure impactor velocity, optical system with high-speed streak camera to measure shock-wave velocities, and the delay trigger system with self-adjustable pre-event pulse generator. We describe the specifications and performance of this system and data-analysis technique on the tilt and distortion of the shock front. Finally, we obtained the Hugoniot data of copper for system demonstration.
authors.affiliation: Materials and Structures Laboratory, Tokyo Institute of Technology, 4259 Nagatsuta, Midori, Yokohama, Japan. yokoo@knlab.msl.titech.ac.jp
authors.forename: Manabu
authors.initials: M
authors.lastname: Yokoo
authors.forename: Nobuaki
authors.initials: N
authors.lastname: Kawai
authors.forename: Yoichiro
authors.initials: Y
authors.lastname: Hironaka
authors.forename: Kazutaka G
authors.initials: KG
authors.lastname: Nakamura
authors.forename: Ken-Ichi
authors.initials: K
authors.lastname: Kondo