ae Questions were asked about development of the hollow implosion and about external initiation. The hollow implosion idea has not been rejected, but Los Alamos has been too busy to devote a well-organized 2Fes vas te Eo Ba Rag ceegt og taht pana ten SSSPB program to it. | — , The thermonuclear program was discussed informally. The meeting continued in session through lunch with scattered disThermo- nuclear Program cussions, At 1:25 p.m. Dr. Bradbury continued his presentation. ; . There was considerable discussion about what scale and character would be appropriate for the thermonuclear program. Dr. Libby amphasized a view that this effort should be stepped up and many hundreds of. people be . attracted as soon as possible into a large-scale experimental program. General assent to this proposal was lacking, largely because of the apparent sterility of any major purely experimental approach and the conviction that the most efficient present use of available talent would be to emphasize theoretical analysis. The need for weapons systems analysis, for both the thermonuclear. and fission weapons, was brought out. This appears to be the kind of problem on which institutions outside. Los Alamos could make valuable contributions. The Los Alamos discussions concluded with an expression of thanks py Dr. Oppenheimer to Dr. Bradbury for his excellent report. ( £

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