Physical Research Program: Hearings Before the Subcommittee on Research and Development of the Joint Committee on Atomic Energy, Congress of the United States, Eighty-fifth Congress, Second Session, on Physical Research Program as it Relates to the Field of Atomic Energy ... |
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Page 531 - SUBCOMMITTEE ON RESEARCH AND DEVELOPMENT OF THE JOINT COMMITTEE ON ATOMIC ENERGY...
Page 746 - California Colorado Connecticut Delaware District of Columbia Florida Georgia Illinois Indiana Iowa Kansas Kentucky Louisiana...
Page 331 - Program, hearings before the Subcommittee on Research and Development of the Joint Committee on Atomic Energy, February 1, 1958, p.
Page 746 - NEW HAMPSHIRE NEW JERSEY NEW MEXICO NEW YORK NORTH CAROLINA OHIO OKLAHOMA OREGON PENNSYLVANIA RHODE ISLAND SOUTH CAROLINA SOUTH DAKOTA TENNESSEE TEXAS UTAH VERMONT VIRGINIA WASHINGTON WEST VIRGINIA WISCONSIN WYOMING W.
Page 326 - CHAPTER 1 Introduction While some aspects of the interaction of various nuclear radiations with solids have been studied for many years, the very active interest in radiation effects in solids at the present time is largely the result of wartime research on nuclear reactor development. EP Wigner recognized in the latter part of 1942 that energetic neutrons and fission fragments, born in the fission process, would have the ability to displace atoms from their equilibrium positions. He reasoned that...
Page 505 - The high temperatures achieved in Zeta, and the relatively long duration for which the hot gas has been isolated from the tube walls, are the most important experimental results obtained so far. Whilst a much longer time (perhaps several seconds) is required for a useful power output, there appears to be no fundamental reason why these longer times, together with much higher temperatures, cannot be achieved. "There are, however...
Page 464 - As I stated on December 18, and as is borne out in the scientific papers released today, both we and the British have succeeded in producing and maintaining quite high temperatures in a plasma of light nuclei, and the containment of such a plasma for brief but nevertheless appreciable lengths of time. But today's reports make it clear that much longer containment must be obtained and much higher temperatures reached. "Two main conditions are necessary for the attainment of power producing thermonuclear...
Page 326 - Vacant lattice sites may be created by collisions of energetic particles with the atoms in a solid lattice. The energy transferred in these collisions is usually sufficient for the recoiling atom to create further vacant lattice sites by subsequent collisions. Thus, for each primary collision, a cascade of collisions resulting in vacancies is initiated.
Page 326 - ... further vacant lattice sites by subsequent collisions. Thus, for each primary collision, a cascade of collisions resulting in vacancies is initiated. (6) Interstitial atoms. The atoms that are displaced from their equilibrium positions in the lattice will stop in an interstitial, or nonequilibrium, position, provided they do not recombine immediately with a nearby vacancy. (c) Impurity atoms. Impurity atoms are formed under neutron bombardment by transmutation. A special case of this is the introduction...
Page 327 - Thus, each collision results in a displaced atom and the end of the trail is believed to be a region containing of the order of one to ten thousand atoms in which local melting and turbulent flow have occurred during a very short interval.