| Summary: | P(論文) Generation of an artificial barium luminescent cloud is a useful technique to investigate configurations of magnetic field lines or electric fields in the upper atmosphere. To make such a plasma cloud of several thousands of kilometers long along a magnetic field line, it is necessary to initiate a well-collimated barium jet with an initial velocity of 8-12km/s by using a shaped charge. This report explains a series of developments of the barium shaped charge techniques, such as molding of barium liners, prohibition of rust on the metallic barium, production of a plane detonation wave and a ground test of a barium ion jet. departmental bulletin paper
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