Explosive Flashbomb Luminosity Factors

Metadata

Publisher: SMPTE — White Plains, NY, USA
Doc Type: Journal Article
Content Type: Original Research
Volume: 71, No. 12, pp. 920–925
Abstract: A brief and exploratory experimental study of explosive flashbombs used framing cameras at 240,000 and 1,020,000 frames/sec. All experiments used atmospheric pressure gas and 8 by 8-in. pads 2-in. thick of composition B 3 explosive. No important differences in the luminosity of xenon and argon were noted when the two gases were enclosed in separate aluminized plastic bags with acrylic resin windows, shocked by separate explosive pads. Sodium salicylate did not fluoresce sufficiently to augment an argon flashbomb's visible light output. As windows on argon flashbombs, vinylidene chloride and cellophane strips and tape became absorptive while glass and acrylic resin sometimes became frosted, depending on undetermined conditions. A faint precursor luminosity was observed ahead of the main luminous front in an argon flashbomb. It had an initial velocity of 13 mm/usec, decreasing in 10 μ;sec to 7 mm/μ;sec. The main luminous front was studied using color film of ASA speed 25 in high-speed cameras at 240,000 frames/sec with aperture f/21, exposure time 0.8 μ;sec, and a filter of neutral density 1.5. Diffusely illuminated white paper was recorded with the same framing rate, exposure time, f-number and no filter, using color film of ASA speed 160.
Publication Date: 1962-12-01
DOI: 10.5594/J09311
ISSN: Print: 0361-4573
Link: https://doi.org/10.5594/J09311
Author(s): David C. OakleyLawrence Radiation Laboratory, University of California, Livermore, Calif.
Howard G. HansonPhysics Department, University of Minnesota at Duluth, Duluth, Minn.
Copyright: © 1962 Society of Motion Picture and Television Engineers, Inc.

Bibliographic Reference(s)

Explosive Argon Flashlamp [Active]
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10. Roth W. Gloersen P. , “Shock tube study of luminosity in xenon,” J. Chem. Phys. , 29 : 820 – 824 , Oct. 1958 . EXTERNAL
11. Gloersen P. , “Some unexpected results of shock heating xenon,” Phys. Fluids , 3 : 857 – 870 . Nov. 1960 . EXTERNAL
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4. Pressman Z. , “High-intensity explosive light sources,” Proc. 5th International Congress on High-Speed Photography, Society of Motion Picture and Television Engineers , pp. 56 – 60 ( 1962 ). EXTERNAL
5. Krokowski E. , “On the question of the fluorescent yield of sodium salicylate in the U.V. and x-ray region,” Naturwissenschaften , 45 : 509 – 510 , Nov. 1958 . EXTERNAL
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David C. Oakley and Howard G. Hanson; Explosive Flashbomb Luminosity Factors, Journal of the SMPTE ( Volume: 71, Issue: 12, December 1962); SMPTE, 1962. Available at https://doi.org/10.5594/J09311

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David C. Oakley and Howard G. Hanson; Explosive Flashbomb Luminosity Factors, Journal of the SMPTE ( Volume: 71, Issue: 12, December 1962); SMPTE, 1962. Available at https://doi.org/10.5594/J09311

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David C. Oakley and Howard G. Hanson; Explosive Flashbomb Luminosity Factors, Journal of the SMPTE ( Volume: 71, Issue: 12, December 1962); SMPTE, 1962. Available at https://doi.org/10.5594/J09311

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<span class="citation">David C. Oakley and Howard G. Hanson; <cite>Explosive Flashbomb Luminosity Factors</cite>, Journal of the SMPTE ( Volume: 71, Issue: 12, December 1962); SMPTE, 1962. Available at <a href="https://doi.org/10.5594/J09311" target="_blank" rel="noopener">https://doi.org/10.5594/J09311</a></span>

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David C. Oakley and Howard G. Hanson; Explosive Flashbomb Luminosity Factors, Journal of the SMPTE ( Volume: 71, Issue: 12, December 1962); SMPTE, 1962
doi: 10.5594/J09311
url: https://doi.org/10.5594/J09311

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<li>
David C. Oakley and Howard G. Hanson; <cite id="bib-10-5594-j09311">Explosive Flashbomb Luminosity Factors</cite>, Journal of the SMPTE ( Volume: 71, Issue: 12, December 1962); SMPTE, 1962
<span class="doi">10.5594/J09311</span>
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