Shock pressure determination in detonator wires
High-resolution microstreak photographs were used to record shock waves from water-immersed, exploding detonator wires. Shock velocities were read directly from the photographs, and pressures were computer from known Hugoniot data. Wires were gold or aluminium, 35 /mu/m in diameter by 1 mm long. The field of the streak camera covered a spatial width of about 1 mm and a time interval of 200 to 500 ns with resolutions of about 5 /mu/m and 1 ns, respectively. Initial hand reduction of data, and the quadratic form of the Hugoniot, resulted in substantial data spread. Computer image analysis has reduced the spread, although questions of interpretation and accuracy remain. Observation included waves generated by melting of the wire and by rebound of the melt wave. Shockwave pressures of over 15 kbar were generated, predominantly by the rebound wave from the burst, which overtakes the initial burst wave. 4 refs., 3 figs.
- Research Organization:
- Lawrence Livermore National Lab., CA (USA)
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 5836366
- Report Number(s):
- UCRL-100687; CONF-890812-46; ON: DE89017756
- Country of Publication:
- United States
- Language:
- English
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