| 摘要 |
Ion pump (10) has feedthrough (33) for electrical connection to anode post (32) within the pumping chamber. Opening (36) in the pumping chamber wall receives a portion of insulator (42). The insulator (42) has a flange (48) which is of larger diameter than the opening (36) so that sputtered cathode material cannot directly disposit on the outer and upper surfaces of the flange (48).
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