電磁衝撃波管におけるprecursor electron

抄録

For the origin of the precursor electron in the E-M shock tube, various hypotheses were proposed by many authors. But up to now there is no definite conclusion of its origin nor the informations of its density. Now we report the axial distribution of the precursor electron in a T-shaped shock tube which has been measured by using the automatic measuring apparatus of the microwave reflection coefficient.