Spectroscopic study of cylindrically converging shock waves

Hideo Matsuo, Kenji Ebihara, Yuji Ohya, Hiroaki Sanematsu

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

Cylindrically converging shock waves have been produced by detonating 20-cm-diam explosive shells in atmospheric air. Shadowgraphs were taken to monitor the production of waves. A spectroscopic measurement of temperature was made using a monochromator combined with a photomultiplier. The spectral radiant energy was compared with the blackbody function (Planck's law). The dependence of temperature upon the initiation energy (the chemical energy of explosives) was also investigated. It was shown that temperature was approximately proportional to the square root of the initiation energy. The attained temperatures ranged from 13 000-34 000 K depending on the initiation energy. These are 3500-9500 K lower than those estimated from shock propagation speeds. The implosion pulse duration (the half-value width) of 2.0-2.5 μs was observed. A possibility of the further increase of temperature as well as some problems was suggested.

Original languageEnglish
Pages (from-to)2487-2491
Number of pages5
JournalJournal of Applied Physics
Volume58
Issue number7
DOIs
Publication statusPublished - Dec 1 1985

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shock waves
temperature
shadowgraph photography
chemical energy
implosions
monochromators
energy
pulse duration
shock
propagation
air
radiation

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

Matsuo, H., Ebihara, K., Ohya, Y., & Sanematsu, H. (1985). Spectroscopic study of cylindrically converging shock waves. Journal of Applied Physics, 58(7), 2487-2491. https://doi.org/10.1063/1.335925

Spectroscopic study of cylindrically converging shock waves. / Matsuo, Hideo; Ebihara, Kenji; Ohya, Yuji; Sanematsu, Hiroaki.

In: Journal of Applied Physics, Vol. 58, No. 7, 01.12.1985, p. 2487-2491.

Research output: Contribution to journalArticle

Matsuo, H, Ebihara, K, Ohya, Y & Sanematsu, H 1985, 'Spectroscopic study of cylindrically converging shock waves', Journal of Applied Physics, vol. 58, no. 7, pp. 2487-2491. https://doi.org/10.1063/1.335925
Matsuo, Hideo ; Ebihara, Kenji ; Ohya, Yuji ; Sanematsu, Hiroaki. / Spectroscopic study of cylindrically converging shock waves. In: Journal of Applied Physics. 1985 ; Vol. 58, No. 7. pp. 2487-2491.
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