Science and Public Policy: National Security 



113 



JOB NO. 2303 



17 HRS 



54MIN 



01 SEC 



06/11/63 

 PAGE NO. 1 14 



INITIAL DAY 325, 1962 PROTON CHANNEL PP3 

 FINAL DAY 334, 1962 

 N=LOG(OMNIDIR COUNT RATE) 



NMIN=0 NMAX = 6.0 



ENERGY RANGE OF 

 DETECTOR CHANNELS 

 40-80 MEV 



Figure 10. — Distribution of protons at energies from 

 40 to 80 Mev. 



rising inventory of new knowledge. For the sake of particular 

 emphasis and in a way not distant from our comments about 

 contributions to nuclear physics and engineering, the recent 

 studies by Matthias, Geballe and co-workers on the supercon- 

 ductivity of beta uranium may be noted. For some reasons, 

 uranium is one of the most heavily studied of all elements, hav- 

 ing been subjected to the most refined investigations of modern 

 physics, chemistry, metallurgy and solid state science. Matthias 

 and Geballe and associates, studying superconductivity, con- 

 firmed that pure uranium in the beta phase, a form stable 

 between 661 °C and 769°C, can be carried over to room tem- 

 perature by the addition of 1.75 atom percent of chromium or 

 platinum. The resulting solids were determined, in detail, to be 

 conventional superconductors with a Tc of the platinum sta- 



