SENSITIVE AREA OF A BACK-SCATER-TYPE GAS FLOW DETECTOR FOR CONVERSION ELECTRON MÖSSBAUER SPECTROMETRY M. Inaba, K. Nomura and Y. Ujihira J. Phys. Colloques, 41 C1 (1980) C1-115-C1-116 DOI: 10.1051/jphyscol:1980122