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ENERGY TRANSFER BETWEEN CHARGED PARTICLES BY COULOMB COLLISIONS

Description: The theory of energy transfer between charged particles in a fully ionized gas is reviewed, and calculations are made of the rate at which energy is transferred from electrons at a temperature T to cooler ions. The interaction between ion and electron is assumed to be of the Debye form (Ze/r) exp (-r/ lambda ), where lambda is the Debye shielding length. It is suggested that future improvements of the theory of Coulomb interaclions in ionized gases are likely to be made in two ways: through employing an effective potential derived on the basis of quantum statistics for the electrons and through improvements in the two-body approximation to the many-body problem. (auth)
Date: May 12, 1958
Creator: Kidder, R.E.

DEVELOPMENT OF A FAST-RELEASE ELECTRO-MAGNET FOR POOL-TYPE RESEARCH REACTORS

Description: Experimental data and observations of the design parameters and physical configurations which lead to faster-release cylindrical flat-faced electromagnets are given. Detailed drawings and operating characteristics are presented for an electromagnet suited to the requirements of a pool-type research reactor using either gravity drop or additional accelerating force. This electromagnet embodies the experimentally developed techniques for attaining fast release. (auth)
Date: February 14, 1958
Creator: Michelson, C.

Experimental resistivity electrode emplacement for the Hawaii geothermal project

Description: Sandia Laboratories expertise in Earth-penetrating projectiles has been applied to problems of geothermal resource research. Field trials of an experimental terradynamics electrode for resistivity surveys have been carried out in cooperation with the Hawaii Institute of Geophysics, and the design of an instrumented magma penetrometer begun. (auth)
Date: April 1, 1974
Creator: Brandvold, G.E.

Behavior of ultrasonic tagged chinook salmon and steelhead trout migrating past Hanford thermal discharges (1967)

Description: Ultrasonic tagged, adult chinook salmon and steelhead trout were tracked in the Columbia River in 1967 during upstream migration past cooling water discharges from nuclear reactors. All fish migrated near shorelines, showing preference for the river bank opposite reactors. Clear responses to local temperaature differences were exhibited by few fish, these responses being to small shoreline seepages rather than to main centerchannel outfalls. (auth)
Date: July 1, 1973
Creator: Coutant, C.C.

THERMAL STRESS ANALYSIS OF CYLINDRICAL SHELLS

Description: BS>Part I of this report describes the analysis of a cylindrical shell subjected to a temperature variation in the axial direction. This part is divided into two sections. Section 1 gives the formulas and the procedure for their application. ln Section 2, the derivations of the cylindrical shell formulas are given. A cylindrical shell subjected to a linear temperature variation through the thickness is considered in Part II. Part III cortains some sample problems which require the metheds of Parts I and II for their solutions. Although this pert demonstrates the use of the formulas derived, a fanniliarity with (1) is a prerequisite to an understanding of the material presented. (auth)
Date: March 26, 1959
Creator: Witt, F.J.

SOME STUDIES OF WATER, STYROFOAM AND PLEXIGLAS REFLECTORS

Description: The reflecting properties of water, Styrofoam, and plexiglas were stadied in critical experiments with 6-in.-thick slabs of aqueous solutions of U0/ sub 2/F/sub 2/ enriched to 93% in U/sub 235/ It was found that Styrofoam is significantly less effective than water as a neutron refiector, since the height of a slab with an effectively infinite Styrofoam reflector (except on top) was reduced by only about 20% from that of the unreflected slab, while the height of a slab with an effectively irfinite water reflector was reduced by more than a fuctor of 3. The effects of placing water, Styrofoam, and plexiglas between two- slab assemblies, both unreflected and waterreflected, were also investigated. (auth)
Date: October 1, 1958
Creator: Fox, J.K. & Gilley, L.W.