MEASUREMENT OF H- DENSITY IN A PLASMA BY PHOTODETACHMENT M. Bacal, G. W. Hamilton, A. M. Bruneteau, H. J. Doucet et J. TailletJ. Phys. Colloques, 40 C7 (1979) C7-791-C7-792DOI: https://doi.org/10.1051/jphyscol:19797381