@article{oai:nipr.repo.nii.ac.jp:00001280,
 author = {Nakamura, Junji},
 journal = {Memoirs of National Institute of Polar Research. Special issue},
 month = {Sep},
 note = {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.},
 pages = {278--287},
 title = {Development of the barium shaped charge technique in Japan},
 volume = {22},
 year = {1982}
}