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Capacitor‐Discharge Initiation of a Detonator containing a vacuum‐deposited thin‐film chromium bridge
Author(s) -
Austing James L.,
Tulis Allen J.,
Hrdina Donald J.,
Joyce Richard P.,
Urbanski Edward,
Fyfe Donald W.,
Smith Robert D.,
Letendre Guy
Publication year - 1988
Publication title -
propellants, explosives, pyrotechnics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.56
H-Index - 65
eISSN - 1521-4087
pISSN - 0721-3115
DOI - 10.1002/prep.19880130502
Subject(s) - detonator , capacitor , materials science , chromium , thin film , energy (signal processing) , range (aeronautics) , energy density , electrical engineering , voltage , composite material , analytical chemistry (journal) , optoelectronics , physics , metallurgy , chemistry , explosive material , nanotechnology , engineering , engineering physics , organic chemistry , quantum mechanics , chromatography
An experimental program is described in which the capacitor‐discharge initiation characteristics of a detonator containing a vacuum‐deposited thin‐film chromium bridge were studied. The objective of the effort was to define the conditions that would result in overall function times of 10 μs or less. The threshold initiation energy of the detonator was in the range of 11.5 mJ–20.0 mJ. Consistent performance was obtained from a firing energy of 54 mJ, which was achieved by a 5‐μF capacitor charged to 147 V. Under these conditions, the average overall function time was 4.2 μs, with a standard deviation of 0.2 μs. Other tests showed that at higher capacitances and lower voltages the function time increased substantially and became more nonreproducible, even though the stored energy was considerably above the threshold value.