Approved for public release; distribution is unlimited / A five microsecond, 15 joule, pulsed C0₂ Laser was used to irradiate polished 2024
aluminum targets. The target voltage response (TVR) was measured with respect to the
incident laser radiation and showed a pulse width on the order of 30 nanoseconds. The
voltage was measured at values from 22 to 140 volts with resistances varying from one
ohm to two mega-ohms. The TVR was correlated to the emission and blow-off of
electrons from the target surface and the possible ignition of a Laser Supported
Detonation wave. The TVR, laser pulse, and flash associated with target surface
breakdown were time correlated and shown to happen within the first 170 nanoseconds
of the five microsecond laser pulse. Currents up to 500 amps were observed when the
resistance to ground was reduced to less than 1 ohm. Also, the magnitude of the TVR
was shown to be a function of background gas pressure. / http://archive.org/details/targetvoltageres00hark / Lieutenant, United States Navy
| Identifer | oai:union.ndltd.org:nps.edu/oai:calhoun.nps.edu:10945/23419 |
| Date | 12 1900 |
| Creators | Harkins, Richard M. |
| Contributors | Schwirzke, Fred R., Cooper, Alfred W.M., Naval Postgraduate School (U.S.), Physics |
| Publisher | Monterey, California. Naval Postgraduate School |
| Source Sets | Naval Postgraduate School |
| Language | en_US |
| Detected Language | English |
| Type | Thesis |
| Format | 65 p., application/pdf |
| Rights | This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States. |
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