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The Nuclear Spin Of Neodymium-141 (open access)

The Nuclear Spin Of Neodymium-141

The spin of neodymium-141 was measured by the method of atomic beams and found to be 3/2. A lower limit placed on the hyperfine separation of the states with total angular momentum [formula] by second-order perturbation theory shows [formula]. A prerequisite for the determination of the nuclear spin from hyperfine-structure measurements is the knowledge of the electronic structure. The ground-state configuration of neodymium is known and the value is used throughout this work.
Date: July 3, 1961
Creator: Alpert, Seymour S.; Budick, Burton; Lipworth, Edgar & Marrus, Richard
Object Type: Report
System: The UNT Digital Library
The Separation of Uranium From Thorium: The Oxalic Acid Leach (open access)

The Separation of Uranium From Thorium: The Oxalic Acid Leach

From Abstract: "The use of the oxalic acid method for the separation of uranium from mixed thorium-uranium peroxides has been investigated, and appears to be the most satisfactory of the obvious methods of separation. One oxalic acid leach removes nearly all of the uranium from the thorium with approximately one mg Th/L remaining in the uranium solution phase."
Date: July 3, 1946
Creator: Christopherson, E. W.; Grady, H. R.; Woodard, R. W. & Larson, C. E.
Object Type: Report
System: The UNT Digital Library
Examination of Factors Affecting the Quality of Vacuum Induction-Melted Uranium (open access)

Examination of Factors Affecting the Quality of Vacuum Induction-Melted Uranium

The following report examines primarily water and air factors that affect the quality of vacuum induction-melted uranium, yet follows experiments with other factors such as graphite and zirconium crucibles under dry and wet conditions, usage of hydrogen, oxygen, CO and other subject admitted to determine pressure-time relationships and residual gas compositions, as well as a study of water-gas reaction within the furnace.
Date: July 3, 1958
Creator: Endebrock, Roy W.; Foster, Ellis L. & Dickerson, Ronald F.
Object Type: Report
System: The UNT Digital Library
Examination of Factors Affecting the Quality of Vacuum Induction-Melted Uranium (open access)

Examination of Factors Affecting the Quality of Vacuum Induction-Melted Uranium

The following report examines primarily water and air factors that affect the quality of vacuum induction-melted uranium, yet follows experiments with other factors such as graphite and zirconium crucibles under dry and wet conditions, usage of hydrogen, oxygen, CO and other subject admitted to determine pressure-time relationships and residual gas compositions, as well as a study of water-gas reaction within the furnace.
Date: July 3, 1958
Creator: Endebrock, Roy W.; Foster, Ellis L. & Dickerson, Ronald F.
Object Type: Report
System: The UNT Digital Library
Radiation Level in the Stator Region of the HRT Fuel Circulation Pump (open access)

Radiation Level in the Stator Region of the HRT Fuel Circulation Pump

The gamma dose rate in the motor region of the HRT fuel circulation pump was measured with the pump scroll full of radioactive solution. Extrapolation of the data to the solution activity expected in the pump under normal operation gives a dose rate well below that which would result in excessive gas production in the stator can within the life of the pump. The above dose rate does not include the effects of fast neutrons from the fuel solution or of the general cell radiation level in the vicinity of the pump. It appears that the possibility of gas production in the stator from the cell background radiation is sufficiently great to warrant the installation of a shield around the outside of the motor end of the fuel circulating pump.
Date: July 3, 1957
Creator: Engel, J. R.
Object Type: Report
System: The UNT Digital Library
Mass Systematics Involving Low-Lying Excited States (open access)

Mass Systematics Involving Low-Lying Excited States

Technical report. From Abstract : "A step phenomenon in the nuclidic mass excess surface associated with magic numbers N, Z = 8 and 20 is shown to exist, whereas only breaks occur at higher magic numbers. Excited states are included which reveals possible smooth trends within Shell-Model subshells."
Date: July 3, 1963
Creator: Everling, F.
Object Type: Report
System: The UNT Digital Library
Alpha-Decay Studies in the Heavy Element Region (open access)

Alpha-Decay Studies in the Heavy Element Region

Thesis describing a research conducted to extend observations on nuclear energy levels and how they effect the nucleus itself, and an investigation on the gamma rays associated for the even-even isotopes and to obtain additional data for the oddmass neclei in the hope that more regularities will become apparent for that class of nuclides.
Date: July 3, 1956
Creator: Hummel, John Philip
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Contributions to the Water Problem (open access)

Contributions to the Water Problem

Technical report describing the investigation of the short-lived activities produced in oxygen compounds by irradiation with pile neutrons. The most prominent of these activities in cooling water is a beta and gamma emitting activity of about 8 second half-life. Because of its production by epicadmium neutrons it was believed to be the 8 second N16 produced in the pile by n,p on O16. The identification has been accomplished and it is established that the 8 second activity is N16. Part 2 of the report deals with the determination of the recoil range of the Al28 atoms formed by pile n,p reaction on Al27.
Date: July 3, 1944
Creator: Novey, Theodore B.
Object Type: Report
System: The UNT Digital Library
High-Frequency Pulse Generator (open access)

High-Frequency Pulse Generator

Introduction: "The purpose of this work was to develop a high-frequency pulse generator that could be used in conducting research on high-rate trigger pairs and scaler circuits. The need for an instrument of this type arose because there was no parallel commercial instrument having this type arose because there was no parallel commercial instrument having a pulse recurrence frequency over approximately 200,000 pulses per second."
Date: July 3, 1947
Creator: Ohmart, Philip E.
Object Type: Report
System: The UNT Digital Library