| 摘要 |
<p>PROBLEM TO BE SOLVED: To suppress discharge starting from a positive electrode by adjusting the asymmetry of an electric field in the positive and negative electrodes, without changing the electrode constitution for compaction of a radiation generating tube itself, in a radiation generator.SOLUTION: An insulating outer cylindrical tube 7 is arranged on the outside of a radiation generating tube 1, the outer cylindrical tube 7 is constituted of outer cylindrical tubes 7a, 7b having different dielectric constants, and the dielectric constant of the outer cylindrical tube 7a is adjusted to be larger than that of the outer cylindrical tube 7b.</p> |
