From: dietz@dls.net   
      
   Marshall Perrin wrote:   
      
   > Conditions which would allow the CNO cycle to proceed for fusion power are   
   > thus almost certainly orders of magnitude harder to achieve than   
   proton-proton reactions.   
      
   That is not at all clear.  Manmade CNO would probably be *pycno*nuclear, not   
   thermonuclear.  Compress hydrogen + heavy elements to very high density, but   
   keep it cold so electron screening is more effective.  Under those conditions,   
   fusion on C/N/O would be faster than p+p.   
      
   There have been projections that H + D fusion can be made to go in cold   
   (< 1000 K) hydrogen at 20 g/cm^3.  It may be feasible to reach these conditions   
   used precompressed solid hydrogen that is further compressed by dozens   
   of weak shocks.   
      
   	Paul   
      
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