Mimo, A., Nakano, H., Wimmer, C., Wünderlich, D., Fantz, U., & Tsumori, K. (2019). Cavity Ring-Down Spectroscopy system for the determination of negative hydrogen ion density at the ELISE test facility. Talk presented at 18th International Conference on Ion Sources (ICIS 2019). Lanzhou. 2019-09-01 - 2019-09-06.