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Automatic Sample Changer

Description: Automatic sample changer developed to increase the number of samples that can be handled daily.
Date: January 3, 1957
Creator: Rankin, M. O.
Partner: UNT Libraries Government Documents Department

Production Test 231-10 Supplement B process evaluation-production of concentrated plutonium nitrate solution in Building 231: Transfer to and processing in Building 234-5. Final report

Description: All of the 231 Building final product was prepared for off-site shipment prior to the startup of the 234-5 Building. The evaporator (S-1) effluent, a solution approximately 10 molar in nitric acid with plutonium concentration of 275 grams/liter, was dried within the shipping container (sample can) to a solid cake. The purpose of this drying operation was to minimize personnel contamination and/or loss of product during shipment. The dried cake was redissolved in water before further purification steps could be performed. The procedures for testing the purification of AT solution as recommended by the development group (6) were presented in Production Test 231-10 Supplement B. Production Test 231-10 Supplement B was initiated to establish the procedures for the precipitation of Plutonium (III) Oxalate in Plant equipment from AT solutions. The current report is written to provide a history of: Work done and data collected during the test, and Conclusions and Recommendations obtained from studies of the data.
Date: October 3, 1951
Creator: Kerr, W.B.
Partner: UNT Libraries Government Documents Department

Production Test 234-5 plant process evaluation precipitation of plutonium IV oxalate

Description: The object of the work described in this report was to adapt the laboratory procedures for precipitating and hydrofluorinating plutonium (IV) oxalate to plant equipment on 160 and 350 gram scale. This adaptation was done by making minor process changes in concentration, digestion time, rate of chemical addition, etc.
Date: December 3, 1952
Creator: Kerr, W.B.
Partner: UNT Libraries Government Documents Department

Microbarograph Evaluation Report

Description: From introduction: This report describes the procedures used and the results obtained in evaluating the Wiancko type 3-PBM-2 microbarograph system.
Date: September 3, 1959
Partner: UNT Libraries Government Documents Department

Evidence for Subshell at Z = 96

Description: The evidence is decisive that major nuclear shells are completed at 82 protons and 126 neutrons (both represented by the nuclide Pb{sup 208}) and these, along with major shells at 82 neutrons and certain lower nucleon numbers (N or Z = 20, 28, 50), are well explained by the strong spin orbit coupling model of Mayer and Haxel, Jensen, and Suess. This model suggests the filling of quantum states at certain intermediate points, and there is an accumulating amount of evidence that such 'sub shells' are also discernible, for example, at Z = 58 and Z = 64. The evidence from alpha radioactivity, both (1) the effect of the nuclear radius shrinkage on the relationship between energy and half-life and (2) the discontinuities in the plots of energy vs. mass number at constant Z, gives a striking indication of the closing of major shells at Z = 82 and N = 126. Application of these sensitive criteria as tests for the much smaller 'subshell' effects in the regions Z > 82 and N > 126 leads to some evidence for such a subshell at Z = 96 (curium).
Date: September 3, 1953
Creator: Seaborg, Glenn T.
Partner: UNT Libraries Government Documents Department

Elastic Scattering of 190 MEV Deuterons by Protons

Description: The elastic differential scattering cross section of 190 MeV deuterons by protons has been measured from 15 degrees to 170 degrees in the center of mass system. The cross sections were obtained by subtracting the carbon counts from those received with a polyethylene target. Part I presents a description of the experiments. Results are shown in Table IV and Fig. 3. Part II compares these results with those expected from theory by making use of a method developed by Chew. A summary of this comparison is given in Table VII.
Date: June 3, 1953
Creator: Chamberlain, Owen & Stern, Martin O.
Partner: UNT Libraries Government Documents Department

STOPPING POWER AND ENERGY FOR ION PAIR PRODUCTION FOR 340 MEVPROTONS

Description: The relative stopping powers for 300 Mev protons of H, Li, Be, C, Al, Fe, Cu, Ag, Sn, W, Pb, and U have been measured. The results are shown in Table I. The energy spent per ion-pair production in the gases H{sub 2}, He, N{sub 2}, O{sub 2}, and A at 340 Mev proton energy has also been measured. The results are shown in Table II.
Date: August 3, 1950
Creator: Bakker, C.J. & Segre, E.
Partner: UNT Libraries Government Documents Department

Maintenance Studies for an LMFR and LMFRE

Description: From foreword: This report concerns remote monitoring of LMFRE facilities.
Date: January 3, 1958
Creator: Frankfort, J. H. & Miller, Philip
Partner: UNT Libraries Government Documents Department

Nuclear Superheat Meeting: September 1959

Description: From introduction: The Commission's underlying objective of this program is to conduct sufficient engineering and development work to determine the most feasible and economical methods of producing nuclear super-heated steam from a boiling water reactor.
Date: November 3, 1959
Partner: UNT Libraries Government Documents Department

Carbon Dioxide Fixation by Green Plants

Description: Since the end of the war when the long-lived isotope of carbon, C{sup 14} became available a new tool has been applied in the study of photosynthesis. Because of the interest evoked by the tracer method, research in all areas of photosynthesis has expanded. There have been reviews on various aspects of photosynthesis such as the primary photochemical reaction, quantum efficiency products, and comparative biochemistry, many discussions of which were included in the monograph of The American Society of Plant Physiologists, ''Photosynthesis in Plants''.
Date: January 3, 1950
Creator: Benson, A.A. & Calvin, M.
Partner: UNT Libraries Government Documents Department

Some Thermodynamic Properties of Freon-114

Description: Introduction: The thermodynamic properties of Freon-114 presented herein supplement those of Volume I and encompass a range of temperature above the critical to 400 F &176 F.
Date: September 3, 1959
Creator: Van Wie, N. H. & Ebel, Robert A.
Partner: UNT Libraries Government Documents Department

Purity data on Redox start-up material through the 231 and 234-5 Buildings

Description: Redox effluent for production was first processed in the 231 Building on February 4, 1952. Samples of process streams were taken after each purification step to evaluate the adequacy of purification processes in,the 231 and 234-5 Buildings and to provide close control of this material. Data regarding pile residence histories, radiation surveys of ``Sample Cans``, reduction yields, C/Q values, and product purity after purification steps were accumulated and are presented in this report to establish preliminary data which may be used to evaluate future process changes.
Date: October 3, 1952
Creator: Collins, P.E.
Partner: UNT Libraries Government Documents Department

100 Areas technical activities report - physics, July 1951

Description: This is the monthly 100 areas technical activities report for the physics group for the month of July 1951. This group was concerned with pile related studies. Work discussed includes neutron attenuation measurements in pile shielding test facilities, studies of physical properties of shielding materials (concrete), work on a xenon generator and separation facility, further development and shielding work for a neutron spectrometer, continued work on a magnetic spectrometer, and counting equipment. Studies of neutron fluxes from exponential piles, and criticality studies are also discussed.
Date: August 3, 1951
Partner: UNT Libraries Government Documents Department

Feasibility survey: Krypton removal at Hanford

Description: Fission-production of krypton-85 in natural uranium piles is substantial and in direct proportion to plutonium production. The known chemical and nuclear properties of krypton are such as to permit its determination in air samples taken at considerable distance from its force and to allow correlation of such measurements with plutonium production.
Date: July 3, 1950
Creator: Greager, O.H.
Partner: UNT Libraries Government Documents Department

Nuclear Safety in Manufacturing Plants

Description: From Introduction: "In the following pages are summarized the factors which influence neutron economy and which, therefore, are important in nuclear safety."
Date: November 3, 1959
Creator: McLaughlin, James E.
Partner: UNT Libraries Government Documents Department

Ignition delays of alkyl thiophosphites with white and red fuming nitric acids within temperature range 80 to -105 F

Description: Ignition delays of alkyl thiophosphites were obtained in a modified open-cup apparatus and a small-scale rocket engine apparatus. At -40 F, mixed alkyl thiophosphites gave short delays with white fuming nitric acid containing 2 percent water and red fuming nitric acids of widely varying compositions. At -40 F and higher, triethyl trithiophosphite blended with as much as 40 percent n-heptane gave satisfactory self-igniting properties at temperatures as low as -76 F.
Date: February 3, 1953
Creator: Miller, Riley O & Ladanyi, Dezso J
Partner: UNT Libraries Government Documents Department