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AN INVESTIGATION OF THE ISOTOPES OF AMERICIUM AND CURIUM

Description: Isotopes of americium and curium with mass numbers less than 242 have been produced by cyclotron bombardment techniques, and several of their nuclear properties have been investigated. The partial alpha half-lives of Am{sup 239}, Cm{sup 241}, and Cm{sup 240} and the partial half-life for spontaneous fission of Cm{sup 240} were measured. The alpha decay daughter of Cm{sup 238} was found and evidence for the discovery of Am{sup 237} (an {approx}1 hour electron capture activity) and Cm{sup 239} (a… more
Date: June 1, 1952
Creator: Higgins, Gary Hoyt.
Partner: UNT Libraries Government Documents Department
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The Nuclear Spins and Magnetic Moments of Certain Gold and Silver Isotopes

Description: An atomic-beam magnetic-resonance apparatus operating on the flop-in principle was used to measure the nuclear spins and hyperfine-structure separations of the /sup 2/S/sub 1/2, electronic ground state for several radioactive isotopes of silver and gold. The results of these experiments, together with calculated values of the nuclear magnetic-dipole moments, are given (auth)
Date: June 1, 1959
Creator: Ewbank, W. B.
Partner: UNT Libraries Government Documents Department
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High Energy (d,p) Reactions

Description: No Description Available.
Date: March 1, 1954
Creator: Slater, L. M.
Partner: UNT Libraries Government Documents Department
open access

Investigations on Cs$sup 137$

Description: No Description Available.
Date: September 1, 1953
Creator: Kinney, W. E.
Partner: UNT Libraries Government Documents Department
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Alpha-Decay Studies in the Heavy-Element Region

Description: Using primarily a 75-cm radius of curvature 60 deg symmetrical electromagnetic analyzer, a study of the complexity of the following alpha spectra was made: Es/sup 253/, Cf/sup 246/, Cm/sup 244/, Am/sup 243/, Pu/sup 236,242/, Pa/sup 231/ , Th/sup 227,230/, Ac/sup 225/, At/sup 209/ and Po/sup 206/. An investigation of the gamma rays associated with the following isotopes was also madei /sup 236/, and Pa/sup 231/. Decay schemes have been suggested for most of the isotopes included in this study. T… more
Date: July 1, 1956
Creator: Hummel, J. P.
Partner: UNT Libraries Government Documents Department
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Thermal Conductivity and Viscosity of Gas Mixtures

Description: Correlations based upon empirical modified equations derived from kinetic theory were developed for the thermal conductivity and viscosity of gas mixtures. The conductivity equation was compared to 226 binary mixture conductivities in temperatures from 0 to 774 deg C from the literature and this work. The average deviation is 2.1%. In correlating conductivity data of mixtures of polyatomic molecules, the energy transport is considered in two parts, i.e., one protion transferred by collision and… more
Date: April 1, 1958
Creator: Cheung, H.
Partner: UNT Libraries Government Documents Department
open access

Manipulator Cable With Constant Stress

Description: A manipulator or mechanical arm involves an upper and a lower arm, with a variable angle between them. Cables used to transmit motion and force from the upper to the lower arms pass over a pulley at the joint or elbow. A pulley, axiaily fixed with respect to the joint, imposes a change in length of the cable as the angle between the arms varies. Manipulation design requires a cable of constant length during this variation; this constant length may be achieved by guiding the center of the pulley… more
Date: November 1, 1959
Creator: Grimson, J. H.
Partner: UNT Libraries Government Documents Department
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