Fast rise-time, fiber optic pin

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A reliable, simple fast-rise-time diagnostic has been developed for measuring the breakout time of the detonation wave in a detonating high explosive. The intrinsic rise time of the signals generated is less than one nanosecond. The technique, called FAT (<i>F</i>iber <i>A</i>rrival <i>T</i>ime), consists of an optical fiber with one end coated with ~1500 Å Aluminum. The coated end is placed in intimate contact with the surface of the explosive. The detonation wave interacting with the Al surface causes a prompt flash of light which is recorded at the output end of the fiber. The active area of the FAT probe ... continued below

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126 Kilobytes

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Roeske, F May 12, 1998.

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Description

A reliable, simple fast-rise-time diagnostic has been developed for measuring the breakout time of the detonation wave in a detonating high explosive. The intrinsic rise time of the signals generated is less than one nanosecond. The technique, called FAT (<i>F</i>iber <i>A</i>rrival <i>T</i>ime), consists of an optical fiber with one end coated with ~1500 Å Aluminum. The coated end is placed in intimate contact with the surface of the explosive. The detonation wave interacting with the Al surface causes a prompt flash of light which is recorded at the output end of the fiber. The active area of the FAT probe end is 100 µm in diameter and centered to within ±10 µm also giving excellent spatial precision. When used in this mode, FAT overcomes difficulties of electronic and past fiber optic pins. When looking at a flyer plate arrival the time response appears to be a function of the metal plate velocity.

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126 Kilobytes

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  • 11th International Detonation Symposium, Snowmass Village, CO, August 30-September 4, 1998

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  • Other: DE00002404
  • Report No.: UCRL-JC-127796
  • Grant Number: W-7405-Eng-48
  • Office of Scientific & Technical Information Report Number: 2404
  • Archival Resource Key: ark:/67531/metadc664934

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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Creation Date

  • May 12, 1998

Added to The UNT Digital Library

  • June 29, 2015, 9:42 p.m.

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  • May 6, 2016, 9:55 p.m.

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Roeske, F. Fast rise-time, fiber optic pin, article, May 12, 1998; Livermore, California. (digital.library.unt.edu/ark:/67531/metadc664934/: accessed December 12, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.