| 摘要 |
The present invention relates to a cavity ionization chamber comprising a graphene electrode which includes an ionization chamber wall comprising a chamber; a high voltage electrode which is located in an inner surface of the chamber; and a collection electrode which is located in the center region of the chamber. The high voltage electrode is made of graphene. A level of radiation which enters the chamber according to the metal thickness of the high voltage electrode is reduced and few ions are generated by using the high voltage electrode of the cavity ionization chamber as graphene. Thereby, it is hard to measure low energy radiation. The efficiency of measuring radiation is improved by manufacturing a graphene electrode which has an ultra-thin film property and superconductivity. |
