Atomic Power Development Associates

We are indebted to many people who have been most cooperative and patient in discussing various aspects of the theory and data with us. These include especially Ott, Froelich, and Schmidt at Karlsruhe, Pitterle at Atomic Power Development Associates, Greebler and Hutchins at General Electric, Hummel and Hwang at Argonne, Graves at United Nuclear, and Ferziger at Stanford University. 

Cromwell and chairman of the Legal Committee of Atomic Power Development Associates, hoped that the industry s worry would be shared by Congress. He cautioned that private industry was unlikely ever to be able to underwrite the whole risk of atomic accidents, though he added that it should be able to carry a substantial amount of the load. ... 

Atomic Power Development Associates (APDA)—A nonprofit technical consortium organized by the Detroit Edison Company to design and conduct research on a commercial fast-breeder reactor. 

Atomic Power Development Associates, APDA-108, "Description of Developmental Fast Neutron Breeder Power Reactor Plant" (1 Sept. 1955), Advisory Committee on Reactor Safeguards (ACRS) File, AEC/NRC. 

One of the more profound manifestations of quantum mechanics is that this curve does not accurately describe reality. Instead, because the motions of electrons are correlated (more properly, the electronic wave functions are correlated), the two atoms simultaneously develop electrical moments that are oriented so as to be mutually attractive. The force associated with tills interaction is referred to variously as dispersion , the London force, or the attractive van der Waals force. In the absence of a permanent charge, the strongest such interaction is a dipole-dipole interaction, usually referred to as an induced dipole-induced dipole interaction, since the moments in question are not permanent. Such an interaction has an inverse sixtli power dependence on the distance between the two atoms. Thus, the potential energy becomes increasingly negative as the two noble gas atoms approach one another from infinity. 

Within the last few years, there has been a resurgence of interest in high-accuracy calculations of simple atomic and molecular systems. For helium, such calculations have reached an extraordinary degree of precision. These achievements are only partially based on the availability of increased computational power. We review the present state of developments for such accurate calculations, with an emphasis on variational methods. Because of the central place occupied by the helium atom and its ground state, much of the discussion centers on methods developed for helium. Some of these methods have also been applied to more complex systems, and calculations on such systems now approach or even surpass a level of precision once only associated with calculations on helium. Hence, other atoms and molecules amenable to high-precision methods are also discussed. 

Organisation CRIEPI (Central Research Institute of Electric Power Industry), Hitachi (Hitachi Ltd), Toshiba (Toshiba Corporation), FES (Fuji Electric Systems Co.), INC (Japan Nuclear Cycle Development Institute), JAERI (Japan Atomic Energy Research Institute), MFH (Mitsubishi Heavy Industries, Ltd), ARTEC (Advanced Reactor Technology Co.), TGC (Tokyo Gas Co.), NSA (Nuclear Systems Association), Tokyo Tech (Tokyo Institute of Technology). 

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