@inproceedings{weko_83468_1, author = "Masayuki,Muramatsu and Shinji,Nomura(SHI) and Shuhei,Harisaki(Osaka Univ.) and Yushi,Kato(Osaka Univ.) and Yasushi,Abe(RIKEN) and Mihiro,Watanabe(Kochi Univ.) and Ken,Katagiri and Atsushi,Kitagawa", title = "Experiment of two frequency heating for production of multiply charged ion at compact ECR ion source.", booktitle = " The 19th International Conference on Ion Sources (ICIS2021)", year = "2021", volume = "", number = "", month = "sep" }