| 摘要 |
Provided is an ion generating apparatus. The ion generating apparatus includes opposed electrodes connected to a high-frequency power supply, and hence, even in a case where a cathode filament is broken, hydride gas can be ionized to generate hydrogen ion. Thus, a fluorine compound deposited in a source housing is reduced in vacuum, and gas containing fluorine generated due to the above-mentioned reduction reaction is discharged with a vacuum pump.
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