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Exotic nuclear structures and decays: new nuclear collective phenomena

Description: Studies of the properties of exotic nuclei have revealed a surprising richness and diversity in their shapes, structures, and decay modes far exceeding our understandings and expectations of even a decay ago. From studies of far-off-stability exotic nuclei have come evidence for the coexistence of different nuclear shapes in the same nucleus, new regions of unusually large deformation, new ground-state phase transitions from one shape to another, new magic numbers but now for deformed shapes, a… more
Date: January 1, 1986
Creator: Hamilton, J.H.
Partner: UNT Libraries Government Documents Department
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Summary remarks and future prospects for on-line nuclear orientation

Description: Results from various groups which use on-line low temperature nuclear orientation techniques are presented. Several nuclear parameters have been successfully studied: rotational levels, nuclear deformation, and decay modes. Future prospects include multiparameter analysis, relaxation and pre-orientation, new separators, and alpha decay studies. 33 refs., 5 figs. (WRF)
Date: January 1, 1984
Creator: Krane, K. S. & Hamilton, J. H.
Partner: UNT Libraries Government Documents Department
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Band structure in even-mass nuclei around A = 70. [Review]

Description: Studies of in-beam gamma rays from heavy-ion induced reactions were used to extensively explore the higher spin states of some of the even-mass nuclei around mass 70. This not only allowed observation of higher members of the ground-state band (up to spins of to 16), but also revealed a surprising variety of other bands. The various bands in such nuclei are reviewed, and some possible theoretical explanations are discussed. Five types of bands are considered. 32 references (JFP)
Date: January 1, 1978
Creator: Robinson, R. L. & Hamilton, J. H.
Partner: UNT Libraries Government Documents Department
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Parcperdue geopressure-geothermal project. Study a geopressured reservoir by drilling and producing a well in a limited geopressured water sand. Final technical report, September 28, 1979-December 31, 1983

Description: The behavior of geopressured reservoirs was investigated by drilling and producing a well in small, well defined, geopressured reservoir; and performing detailed pressure transient analysis together with geological, geophysical, chemical, and physical studies. The Dow-DOE L. R. Sweezy No. 1 well was drilled to a depth of 13,600 feet in Parcperdue field, just south of Lafayette, Louisiana, and began production in April, 1982. The production zone was a poorly consolidated sandstone which constant… more
Date: January 15, 1984
Creator: Hamilton, J.R. & Stanley, J.G. (eds.)
Partner: UNT Libraries Government Documents Department
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The medical applications of radioactive tracers

Description: This report provides a broad yet in depth overview of the use of radioactive materials as tracers in medicine and biology for the period of 1935--1947. Particular attention is paid to is of radio-sodium, radio-iodine, radio-iron, radio-phosphorus, radio-strontium, and fission products. The main thrust of this paper is human rather than animal work and focuses in work that has been published.
Date: December 31, 1947
Creator: Hamilton, J. G.
Partner: UNT Libraries Government Documents Department
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Technical progress report on the metabolic studies of plutonium for month of August 1945

Description: This monthly report briefly describes ongoing studies including urinary and fecal excretion of Plutonium 238 by human subjects and by rats, exploring way to facilitate the removal of Plutonium 238 from rat bone, the absorption of Plutonium 238 by barley plants, and use of inert iodine to block absorption of Iodine-131 in the rat.
Date: December 31, 1945
Creator: Hamilton, J.G.
Partner: UNT Libraries Government Documents Department
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Determining Original Inventory Amount of Radioactive Substances from Unmonitored Radionuclide Emissions

Description: The purpose of this document is to determine the air emissions inventory of the Savannah River Site. To satisfy regulatory requirements, a new equation has been developed to determine original inventory amounts from unmonitored radionuclide emissions.
Date: August 11, 1999
Creator: Hamilton, J.T.
Partner: UNT Libraries Government Documents Department
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Strength of Coriolis Coupling in actinide nuclei

Description: Coriolis Coupling V/sub cor/ plays an important role in deformed nuclei. V/sub cor/ is proportional to h/sup 2//J(j (j + 1) -..cap omega.. (..cap omega.. + 1))/sup 1/2/ and therefore is particularly significant in the nuclei with large j and low ..cap omega.. Nilsson levels close to Fermi surface: n(i/sub 13/2/) in A = 150 to 170 rare-earth nuclei and p(i/sub 13/2/) and n(j/sub 15/2/) in A greater than or equal to 224 actinide nuclei. Because of larger j (n(j/sub 15/2/) versus n(i/sub 13/2/)) a… more
Date: January 1, 1982
Creator: Peker, L. K.; Rasmussen, J. O. & Hamilton, J. H.
Partner: UNT Libraries Government Documents Department
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Collective motions and band structures in A = 60 to 80, even--even nuclei. [Review]

Description: Evidence for and the theoretical understanding of the richness of the collective band structures as illustrated by at least seven bands seen in levels of /sup 68/Ge, /sup 74/Se are reviewed. The experimental data on even-even nuclei in the A = 60 to 80 region have now revealed a wide variety of collective bands with different structures. The even parity yrast cascades alone are seen to involve multiple collective structures. In addition to the ground-state bands, strong evidence is presented fo… more
Date: January 1, 1978
Creator: Hamilton, J. H.; Robinson, R. L. & Ramayya, A. V.
Partner: UNT Libraries Government Documents Department
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Initiation of a Nuclear Research Program at Fisk University in Cooperation with the Nuclear Physics Group at Vanderbilt University, August 15, 1997 - January 14, 2000

Description: Carrying a spirit of a long history of cooperation in physics education and research between Fisk University and Vanderbilt University, the Nuclear Research Program in the Department of Physics at Fisk University was proposed in 1996 in cooperation with the Nuclear Physics Group at Vanderbilt University. An initial NRP program was commissioned in 1997 with the financial support from DOE. The program offers a great opportunity for students and faculty at Fisk University to directly access experi… more
Date: October 1, 2002
Creator: Collins, W.E. & Hamilton, J.H.
Partner: UNT Libraries Government Documents Department
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Microfluidic Applications of Soft Lithography

Description: The soft lithography fabrication technique was applied to three microfluidic devices. The method was used to create an original micropump design and retrofit to existing designs for a DNA manipulation device and a counter biological warfare sample preparation device. Each device presented unique and original challenges to the soft lithography application. AI1 design constraints of the retrofit devices were satisfied using PDMS devices created through variation of soft lithography methods. The m… more
Date: April 10, 2001
Creator: Rose, K A; Krulevitch, P & Hamilton, J
Partner: UNT Libraries Government Documents Department
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Neutron multiplicities in spontaneous fission and nuclear structure studies

Description: New insights into the fission process can be gained by better quantitative knowledge of how the energy released in fission is distributed between the kinetic energy of the two fragments, the excitation energy of the two fragments and the number of neutrons emitted. Studies of prompt gamma-rays emitted in spontaneous fission (SF) with large arrays of Compton suppressed Ge detector arrays are providing new quantitative answers to longstanding questions concerning fission as well as new insights i… more
Date: December 31, 1993
Creator: Hamilton, J. H.; Kormicki, J. & Lu, Q.
Partner: UNT Libraries Government Documents Department
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A low power, tight seal, polyimide electrostatic microvalve

Description: An electrostatically-actuated polyimide microvalve is developed with sub-micron gaps between the electrodes to provide high force with low power consumption (< 1 mW). Built-in residual stress results in a curled bimorph cantilever which allows for a n-Licroactuator with large displacement. This microactuator is used to open and close a fluid path hole etched in silicon for a microvalve. The microactuator can be actuated with 25V for a displacement of 200 {mu}m. The cantilever actuator is mainly… more
Date: April 17, 1996
Creator: Lee, A.P.; Hamilton, J. & Trevino, J.
Partner: UNT Libraries Government Documents Department
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Localization of Cerium-144 in the Skeletal Tissues of Fetal Rats

Description: The developing fetal skeleton of the rat was used to study the microscopic localization of the rare earth Ce/sup 144/ in bone. Nineteen-day-old rat fetuses were injected with Ce/sup 144/ in isotonic sodium citrate via the umbilical vein. They were sacrificed one-haif hour after the injection by immersion in 80% alcohol fixative. The fetuses were embedded in paraffin and sectioned at 10 to 12 mu . Semiserial sections were treated with periodic acid- Schiff stain for mucopolysaccharides, and by t… more
Date: October 18, 1957
Creator: Asling, C. W.; Johnston, M. E.; Durbin, P. W. & Hamilton, J. G.
Partner: UNT Libraries Government Documents Department
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Summary of Research on Experimental Refractory Bodies of High-Melting Nitrides, Carbides, and Uranium Dioxide

Description: First 31 pages of a quarterly report discussing the progress made on research projects during the period from October 1950 to December 1950. This section of the report discusses progress on studies of the metabolic properties of various elements.
Date: February 27, 1951
Creator: Chiotti, P. & Hamilton, J. G.
Partner: UNT Libraries Government Documents Department
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Smart interfacial bonding alloys

Description: The goal of this LDRD was to explore the use of the newly discovered strain-stabilized 2-D interfacial alloys as smart interface bonding alloys (SIBA). These materials will be used as templates for the heteroepitaxial growth of metallic thin films. SIBA are formed by two metallic components which mix at an interface to relieve strain and prevent dislocations from forming in subsequent thin film growth. The composition of the SIBA is determined locally by the amount of strain, and therefore can … more
Date: April 1, 1999
Creator: Hwang, R. Q.; Hamilton, J. C. & Houston, J. E.
Partner: UNT Libraries Government Documents Department
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Insights into nuclear structure and the fission process from spontaneous fission

Description: The {gamma}-rays emitted following spontaneous and induced fission are rich sources of information about the structure of neutron-rich nuclei and about the fission process itself. The study of spontaneous fissioning isotopes with large Ge detector arrays are providing a wealth of such information as seen, for example, in recent reports. In this paper we present some of our most recent results on nuclear structure studies and conclusions on the fission process itself. In our work, we have employ… more
Date: December 31, 1993
Creator: Hamilton, J.H.; Butler-Moore, K. & Ramayya, A.V.
Partner: UNT Libraries Government Documents Department
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The Metabolism of Thorium, Protoactinium, and Neptunium in the Rat

Description: From abstract: "The distribution of carrier-free thorium, protoactinium and neptunium in the rat following intramuscular and oral administration has been studied. Oral adsorption for all three is negligible. Following parenteral administration, the skeleton is the organ showing the highest degree of prolonged and selective localization."
Date: August 23, 1946
Creator: Lans, H.; Scott, E. G.; Crowley, J. & Hamilton, J. G.
Partner: UNT Libraries Government Documents Department
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Subnanosecond lifetime measurements of excited states in nuclei far from stability

Description: A system was developed to measure the lifetimes of nuclear states in the range of 0.05 to 1 nanosecond in nuclei far from stability. A Gerholm magnetic lens was placed on-line with the UNISOR mass separator to observe conversion electrons in coincidence with ..gamma.. rays detected in a plastic scintillator. With this system, the half-life of the 522 keV, O/sup +/ level in /sup 186/Hg was measured to be 155 +- 70 picoseconds. Improvements in this system should make possible on-line measurements… more
Date: January 1, 1979
Creator: Nettles, W. G.; Ramayya, A. V.; Hamilton, J. H.; Avignone, F. T. III & Carter, H. K.
Partner: UNT Libraries Government Documents Department
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