Experimental measurements of detonation velocity as a function of charge length for Composition B‐3 and PBX‐9404 are reported. Initation was by a 200‐mm‐diam baratol lens. A transient decay time of about 10 μsec was observed in Composition B‐3; no transient could be measured in PBX‐9404.

1.
A. W. Campbell and R. Engelke, in Sixth Symposium (International) on Detonation (Office of Naval Research, Washington, D.C., 1976), p. 642.
2.
J. B. Bdzil and W. C. Davis, Los Alamos Scientific Laboratory Report LA‐5926‐MS (1975).
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