Title : 
Large Area Beryllium Proportional Counters
         
        
            Author : 
Tananbaum, H. ; Kellogg, E.M.
         
        
            Author_Institution : 
American Science & Engineering Cambridge, Massachusetts 02142
         
        
        
        
        
        
        
            Abstract : 
Proportional counters have been developed for use in satellite X-ray astronomy experiments. The counters are all beryllium with 2.5 mil (63.5 micron) windows, using epoxy seals. They are shown to have excellent long-term stability and resistance to environmental stress, except for 100% humidity.
         
        
            Keywords : 
Aluminum; Astronomy; Atmosphere; Counting circuits; Magnesium; Satellite broadcasting; Seals; Stress; X-ray detection; X-ray detectors;
         
        
        
            Journal_Title : 
Nuclear Science, IEEE Transactions on
         
        
        
        
        
            DOI : 
10.1109/TNS.1970.4325566