CPC Main Group G21K 5/00 Irradiation devices (discharge tubes for irradiating H01J37/00) 4 direct subcodes Child Classifications Navigate with arrow keys, Enter to open G21K 5/02 having no beam-forming means G21K 5/04 with beam-forming means G21K 5/08 Holders for targets or for other objects to be irradiated G21K 5/10 with provision for relative movement of beam source and object to be irradiated