Purification of Uranium Oxide (open access)

Purification of Uranium Oxide

None
Date: April 21, 1942
Creator: Hoffman, J.I.
Object Type: Report
System: The UNT Digital Library
Hanford Engineer Works, technical progress letter number 15, October 13 through October 19, 1944 (open access)

Hanford Engineer Works, technical progress letter number 15, October 13 through October 19, 1944

This report documents the progress made for the week in each of the following areas: fuel canning operations; reactor operations (100 area); instrumentation development; and fuel reprocessing (200 area). Detailed information is given for each of these areas. Problems encountered are also discussed.
Date: October 21, 1944
Creator: Bugbee, S. J.
Object Type: Report
System: The UNT Digital Library
THE USE OF SULFIDE CRUCIBLES FOR REMELTING AND REDUCTIONS (open access)

THE USE OF SULFIDE CRUCIBLES FOR REMELTING AND REDUCTIONS

None
Date: November 21, 1944
Creator: Brewer, L.; Bromley, L.A.; Lofgren, N.; Gillis, P. & Gwinn, W.
Object Type: Report
System: The UNT Digital Library
Technical Department report on Production Test No. 313-62-M: Effect of bar position on seating in the canning of heavy metal slugs (open access)

Technical Department report on Production Test No. 313-62-M: Effect of bar position on seating in the canning of heavy metal slugs

None
Date: March 21, 1945
Creator: Grills, R. C.
Object Type: Report
System: The UNT Digital Library
Pitchblende Processing Filtration Data. Engineering B Data Progress Report I for April 3-14, 1945 (open access)

Pitchblende Processing Filtration Data. Engineering B Data Progress Report I for April 3-14, 1945

None
Date: April 21, 1945
Creator: Miller, E.
Object Type: Report
System: The UNT Digital Library
300 Area: December 11 Through December 17 (open access)

300 Area: December 11 Through December 17

This report discusses the operation of the Hanford Reservation`s 300 Area for December 11 through December 17, 1945. They discuss: extrusion, canning, slug testing, a magnesium chloride flux, and the composition changes of a aluminium-silicon dip bath.
Date: December 21, 1945
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Treatment of Torbernite (open access)

Treatment of Torbernite

Production of black oxide from torbernite was studied on a laboratory scale from the standpoint of uranium extraction, reagent requirements, and removal of impurities. A small portion of the material was examined for its mineral constituents, using optical properties, X-ray diffraction patterns, and chemical analysis for identification. About 50% of the material was quartz; 30% green crystals of a copper-uranium phosphate; 10% of a black mineral, which was not identified, but which appeared to be an oxide mixture of nickel, cobalt, copper, and molybdenum; and small amounts of gibbsite, laterite and feldspar. There were no lower oxides of uranium in the sample.
Date: January 21, 1946
Creator: Brimm, E. O., Dr.
Object Type: Report
System: The UNT Digital Library
100 Areas: (For Technical Progress Letter No. 102), June 11--June 17 (open access)

100 Areas: (For Technical Progress Letter No. 102), June 11--June 17

Operation of the D and F Piles is reported. Other items reported are: general; water, corrosion and engineering (graphite expansion).
Date: June 21, 1946
Creator: Jordan, W. E.
Object Type: Report
System: The UNT Digital Library
Interim report No. 6 production test No. 106-52-P, graphite expansion: Gun barrel clearance (open access)

Interim report No. 6 production test No. 106-52-P, graphite expansion: Gun barrel clearance

The face to face expansion of the graphite packing of the pile reduces the gun barrel sum-clearance and if continued will strain the aluminum tubes with ultimate rupture of the Van Stone joints. The graphite expansion may be determined while an aluminum process tube is out of the unit. The distance from the graphite at the inner end of one gun barrel to the corresponding point at the opposite face is measured and compared to a similar measurement that was made during construction of the pile. The replacement of the two scored aluminum tubes at F Pile provided an opportunity to make these measurements. A corresponding measurements made during construction indicates an expansion of 28/32in. at Tube 2174-F and 23/32in. at 2284-F on November 5, 1946, after a total pile exposure of 132,896 MWD. Measurements of gun barrel sum-clearance and aluminum tube length before replacement indicated a graphite expansion of 25/32in. at Tube 2174-F and 24/32in. at 2284-F, which is in reasonable agreement with the above graphite measurements.
Date: January 21, 1947
Creator: Lewis, W. R. & Rohrbacher, R. A.
Object Type: Report
System: The UNT Digital Library
100 Areas Technical Activities Report - Engineering, April 1947 (open access)

100 Areas Technical Activities Report - Engineering, April 1947

This is the first of a series of monthly reports covering details of the work of the Engineering Group of the Pile Technology Section of the Technical Department. The monthly Slug Inspection Report is being discontinued as a separate document and is being incorporated in this group report. Included is work on corrosion and blistering; graphite expansion; and irradiation studies.
Date: May 21, 1947
Creator: Woods, W. K.
Object Type: Report
System: The UNT Digital Library
Nuclear Reactions of Arsenic with 190 Mev Deuterons (open access)

Nuclear Reactions of Arsenic with 190 Mev Deuterons

Isotopes formed in the bombardment of {sub 33}As{sup 75} with 190 Mev deuterons range in atomic number up to 24 (or more) mass units lighter than As{sup 75}. Identification of these isotopes was based on chemical behavior and half-life determination. Relative yields have been calculated and show that 80% of the observed reactions produce isotopes within 8 mass units of As{sup 75}. Three new isotopes have been observed: 9.5 d. Se{sup 72} (K), 44 m, Se{sup 71} ({beta}{sup +}), and 52 m, As{sup 71} ({beta}{sup +}).
Date: January 21, 1948
Creator: Hopkins Jr, H.H. & Cunningham, B.B.
Object Type: Article
System: The UNT Digital Library
Studies with Colloids Containing Radioisotopes of Yttrium, Zirconium, Columbium, and Lanthanum: 1. The Chemical Principles and Methods Involved in Preparation of Colloids of Yttrium, Zirconium, Columbium, and Lanthanum (open access)

Studies with Colloids Containing Radioisotopes of Yttrium, Zirconium, Columbium, and Lanthanum: 1. The Chemical Principles and Methods Involved in Preparation of Colloids of Yttrium, Zirconium, Columbium, and Lanthanum

For a number of investigations, including fundamental studies of radiation effects on living tissues and therapeutic utilization of radioisotopes, it is valuable to have methods for the selective localization of radioisotopes in certain tissues. Finely dispersed anhydrous chromic phosphate has been found useful by Jones, Wrobel, and Lyons in selectively irradiating the liver and spleen with p{sup 32} beta particles. The present studies, reported in this and the following communication, are concerned with methods for controlled selective localization of colloids (incorporating radioisotopes) in the liver, spleen, or bone marrow, and with an analysis of some of the factors involved in the phenomenon of localization.
Date: April 21, 1948
Creator: Gofman, John W.
Object Type: Report
System: The UNT Digital Library
Studies with Colloids Containing Radioisotopes of Yttrium, Zirconium, Columbium and Lanthaum: 2. The Controlled Selective Localization of Radioisotopes of Yttrium, Zirconium, Columbium in the Bone Marrow, Liver and Spleen (open access)

Studies with Colloids Containing Radioisotopes of Yttrium, Zirconium, Columbium and Lanthaum: 2. The Controlled Selective Localization of Radioisotopes of Yttrium, Zirconium, Columbium in the Bone Marrow, Liver and Spleen

Several workers have shown that certain colloidally dispered materials are removed from the blood stream by the liver and spleen. Jones, Wrobel, and Lyons have utilized suspensions of anhydrous chromic phosphate for the selective irradiation of the liver and spleen with p{sup 32} beta particles. Gersh demonstrated that colloidal calcium phosphate is taken up by the liver and spleen. He stressed the failure of bone marrow phagocytes to take up this colloid in rats and dogs (though he referred to possible uptake in the marrow of rabbits under special conditions), and commented on the relative 'refractoriness' in general of the bono marrow as compared with liver and spleen with respect to the uptake of colloidal dyes from the blood stream. Some histological data indicate that 'Thorotrast' (a colloidal thorium dioxide preparation) is deposited in the bone marrow as well as in the liver and spleen, but no quantitative data as to the relative distribution are available. In the preceding communication the methods for the preparation of colloids incorporating radioisotopes of yttrium, columbium, and zirconium were given. The present studies are concerned with the localization of such colloids primarily in the bone marrow or primarily in the spleen and liver, with …
Date: April 21, 1948
Creator: Dobson, E.L.; Gofman, J.W.; Jones, H.B.; Kelly, Lola S. & Walker, L.
Object Type: Report
System: The UNT Digital Library
Meeting with NEPA Group at Lexington (open access)

Meeting with NEPA Group at Lexington

None
Date: June 21, 1948
Creator: Cooley, W. C.
Object Type: Report
System: The UNT Digital Library
METHODS FOR THE ANALYSIS OF BERYLLIUM CARBIDE (open access)

METHODS FOR THE ANALYSIS OF BERYLLIUM CARBIDE

Analytical methods are given for determining the composition and impurities of beryllium carbide. A summary of the experimental work leading to these procedures and supporting data are also presented. Analytical procedures for the determination of free and combined carbon, moisture, nitrogen, beryllium oxide, silica, iron, total beryllium, and beryllium metal are outlined. Diagrams of special apparatus used are included. (auth)
Date: March 21, 1949
Creator: Bridges, W.L.; Funston, E.S. & Reed, S.A.
Object Type: Report
System: The UNT Digital Library
The Path of Carbon in Photosynthesis VII Respiration andPhotosynthesis (open access)

The Path of Carbon in Photosynthesis VII Respiration andPhotosynthesis

The relationship of respiration to photosynthesis in barley seedling leaves and the algae, Chlorella and Scenedesmus, has been investigated using radioactive carbon dioxide and the techniques of paper chromatography and radioautography. The plants are allowed to photosynthesize normally for thirty seconds in c{sup 14}O{sub 2} after which they are allowed to respire in air or helium in the light or dark. Respiration of photosynthetic intermediates as evidenced by the appearance of labeled glutomic, isocitric, fumaric and succinic acids is slower in the light than in the dark. Labeled glycolic acid is observed in barley and algae. It disappears rapidly in the dark and is maintained and increased in quantity in the light in C0{sub 2}-free air.
Date: July 21, 1949
Creator: Benson, A. A. & Calvin, M.
Object Type: Report
System: The UNT Digital Library
Half-Life for Double Beta-Decay (open access)

Half-Life for Double Beta-Decay

Fireman(1) has reported the results of a rather difficult beta-particle coincidence counting experiment in which the decay of Sn{sup 124} by the simultaneous emission of two negative beta-particles, with a half-life between 0.4 x 10{sup 16} years and 0.9 x 10{sup 16} years, seems to have been observed. This note reports the results obtained from a different and somewhat simpler method of looking for the phenomenon of simultaneous emission of two beta-particles. These results are negative so far and show that this process is considerably less probable in the case chosen by us than in that reported by Fireman. The method consists of looking in uranium samples for 90-year Pu{sup 238} which would come from U{sup 238} by the double beta-particle mechanism since Np{sup 238} is heavier than U{sup 238}, which in turn is substantially heavier than Pu{sup 238}, in the isobaric triplet {sub 92}U{sup 238}-{sub 93}Np{sup 238}-{sub 94}Pu{sup 238}. This chemical method of investigation is particularly applicable to this isobaric triplet because there appears to be no other mechanisms to account for the Pu{sup 238} should it be found. The energetics of the situation are summarized in the following diagram, where the disintegration energies are derived from sources which …
Date: October 21, 1949
Creator: Levine, C. A.; Ghiorso, A. & Seaborg, G. T.
Object Type: Report
System: The UNT Digital Library
100 Areas technical activities report -- Physics, October 1949 (open access)

100 Areas technical activities report -- Physics, October 1949

This report contains brief summaries of activities at the Hanford production reactors for the month of Oct. The activities for the Pile Physics Group are: (1) H Area start-up; (2) outlet temperature recording systems; (3) reactivity balance for each pile for this period. Activities for the Experimental Physics Group are: (1) graphite testing; (2) 305 testing -- P-slug standardization and graphite standards; (3) shielding. Also status is given on critical mass project.
Date: November 21, 1949
Creator: Gast, P. F.
Object Type: Report
System: The UNT Digital Library
Zirconium analysis (open access)

Zirconium analysis

Recent attempts to displace fixed plutonium from the body by zirconium therapy have made an analytical method for the determination of zirconium in urine salts advisable. Standard chemical analytical methods for zirconium in rock were not adaptable to urine salts. The poor results obtained from these standard methods necessitated the development of a modified analytical procedure. The results of this work are reported herein.
Date: February 21, 1950
Creator: Thorburn, R. C.
Object Type: Report
System: The UNT Digital Library
Attenuation of Gamma Radiation by High Density Lead Glass Compared With Steel (open access)

Attenuation of Gamma Radiation by High Density Lead Glass Compared With Steel

None
Date: March 21, 1950
Creator: Wheeler, R. G.
Object Type: Report
System: The UNT Digital Library
HOMOGENEOUS REACTOR EXPERIMENT REPORT FOR THE QUARTER ENDING FEBRUARY 28, 1950 (open access)

HOMOGENEOUS REACTOR EXPERIMENT REPORT FOR THE QUARTER ENDING FEBRUARY 28, 1950

None
Date: April 21, 1950
Creator: Winters, C.E. ed.
Object Type: Report
System: The UNT Digital Library
The Relative Thermal Conductivities of Liquid Lithium, Sodium, and Eutectic NaK, and the Specific Heat of Liquid Lithium (open access)

The Relative Thermal Conductivities of Liquid Lithium, Sodium, and Eutectic NaK, and the Specific Heat of Liquid Lithium

None
Date: April 21, 1950
Creator: Yaggee, F.L. & Untermyer, S.
Object Type: Report
System: The UNT Digital Library
DETECTION OF POSITIVE $pi$ MESONS BY $pi$$sup +$ DECAY (open access)

DETECTION OF POSITIVE $pi$ MESONS BY $pi$$sup +$ DECAY

None
Date: December 21, 1950
Creator: Jakobson, M.; Schulz, A. & Steinberger, J.
Object Type: Report
System: The UNT Digital Library
Health - Physics Monthly Information Report. February 1-28, 1951 (open access)

Health - Physics Monthly Information Report. February 1-28, 1951

None
Date: March 21, 1951
Creator: Boozer, A. H.
Object Type: Report
System: The UNT Digital Library