eeeSes Seay ancl oniaian' its energy os sy or in re- | Panb deri = aw. ear: 221942, cortran attention waa given to the possibilty of utilising the high temperatures expsated in the fission bomb ("4~bonb*} _to *ignite® heavy hydrogen isetepes. ‘During the years phich folexplared extensively esearily limited by the deusads af the s-bomb project. |The proeent H-bomb project {fs a 'centimmtion ani an expansion of the work © done in the past, aiming at a demenstration that it is pr is not feasible, and at preparation for productionshould that| later be my be possiile to attainouchconditionsWywe ef6 Roired fer gn W-bosb. heavy hydrogen isotopes, deuteriim and tritiom, in rapid funion re- . actions, is well known. Some of the basimeasurenents[c \ these reactions were made more than fifteen years ago. .The mnuf of {ritiua in quantity requires seutrens in quantity. _ nis require- ment competes for avallabis neutrens with the fissic e mtericl production requirenents. The deuterium, however, can be extracted with sou effort from naturel sguross. oo , erous references to the great energy released from an H-bormb. It has been stated that it might be = thousand tines greater than that of a fission bomb. The *eritica) size” effects wbip h primarily limit the energy release from A-boubsdo not ap ply to H-bomba, There are of couse practical Matta to the «nergy release achievable or desirable in en E-bamb. - blast effect would be increased many times over that of an A-bomb. It might be possible, far instance, to constructan B-bosb whoas blast damge in a circle of ten uiles radius would be cor UN CLASSeae