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Updated: Jun 17, 2026

Measurement of Ultrafast Vibrational Coherences in Polyatomic Radical Cations with Strong-Field Adiabatic Ionization
Published on: August 6, 2018
A time-resolving spectrograph for free-flight ballistic range application
1AC Electronics Defense Research Laboratories,General Motors Corporation, Santa Barbara, California 93017, USA.
Abstract:
Time-resolved spectra for some hypervelocity spheres and cones in a free-flight ballistic range are obtained using a large aperture, slitless spectrograph in conjunction with an image converter camera. For nonablating spheres, only emission from the shock cap can be observed with the present instrument. For ablating models at elevated speeds and range pressures, band systems for such molecular species as C(2), CH, and CN for some objects containing hydrocarbons and Cu(2), CuF, CuO, BeO, and AlO for metallic models have been observed in the near wake region of the flow. The feasibility of using a high gain image intensifier for the study of far wake emission is discussed.
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