Direct observation of the phenomenology of a solid thermal explosion using time-resolved proton radiography.
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 100 micros. 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.
Smilowitz
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L
Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA.
Henson
B F
BF
Romero
J J
JJ
Asay
B W
BW
Schwartz
C L
CL
Saunders
A
A
Merrill
F E
FE
Morris
C L
CL
Kwiatkowski
K
K
Hogan
G
G
Nedrow
P
P
Murray
M M
MM
Thompson
T N
TN
McNeil
W
W
Rightley
P
P
Marr-Lyon
M
M