Early time spectroscopic measurements during high-explosive detonation breakout into air

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Abstract

Explosive breakout of PBX-9407 into air is examined using time-resolved optical spectroscopy over a period of several microseconds. Emission is monitored over the 250-700 nm range, and several atomic and molecular species are observed including atomic calcium, and copper, as well as OH and CN. Several lines and bands remain unidentified. Fits to Ca and OH spectra suggest that early time temperatures exceed 13,000 K behind the air shock and that temperature decay is fairly rapid over the first 10μs.Considering the proposed shock structure of the blast wave, it is likely that these temperatures are confined to a narrow region behind the blast wave, but nevertheless generate emission signatures that dominate the spectra at early times.

Original languageEnglish (US)
Pages (from-to)131-138
Number of pages8
JournalShock Waves
Volume23
Issue number2
DOIs
StatePublished - Mar 1 2013

Keywords

  • Blast wave
  • Detonation
  • Emission spectroscopy

ASJC Scopus subject areas

  • Mechanical Engineering
  • Physics and Astronomy(all)

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