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Direct Observation of the Phenomenology of a Solid Thermal Explosion Using Time-Resolved Proton Radiography

L. Smilowitz, B. F. Henson, J. J. Romero, B. W. Asay, C. L. Schwartz, A. Saunders, F. E. Merrill, C. L. Morris, K. Kwiatkowski, G. Hogan, P. Nedrow, M. M. Murray, T. N. Thompson, W. McNeil, P. Rightley, and M. Marr-Lyon (pRad Collaboration)
Phys. Rev. Lett. 100, 228301 – Published 4 June 2008
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Abstract

We present a new phenomenology for burn propagation inside a thermal explosion based on dynamic radiography. Radiographic images were obtained of an aluminum cased solid cylindrical sample of a plastic bonded formulation of octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine. The phenomenology observed is ignition followed by cracking in the solid accompanied by the propagation of a radially symmetric front of increasing proton transmission. This is followed by a further increase in transmission through the sample, ending after approximately 100μs. We show that these processes are consistent with the propagation of a convective burn front followed by consumption of the remaining solid by conductive particle burning.

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  • Received 1 October 2007

DOI:https://doi.org/10.1103/PhysRevLett.100.228301

©2008 American Physical Society

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See Also

Thermal Explosions on Film

Michelangelo D'Agostino
Phys. Rev. Focus 21, 19 (2008)

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Vol. 100, Iss. 22 — 6 June 2008

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