@inproceedings{Ito:2025PZ, author = "Ito, Hiroshi", title = "{Measurement of the emissivity of surface alpha particles based on the gaseous μTPC with optics in a low radioactive background}", doi = "10.22323/1.501.0495", booktitle = "Proceedings of 39th International Cosmic Ray Conference {\textemdash} PoS(ICRC2025)", year = 2025, volume = "501", pages = "495" }