8-Hydroxyquinoline Colorimetric Method for the Determination of Microgram Quantities of Uranium (open access)

8-Hydroxyquinoline Colorimetric Method for the Determination of Microgram Quantities of Uranium

None
Date: November 19, 1947
Creator: Lee, D. A. & Woodard, R. W.
Object Type: Report
System: The UNT Digital Library
N-17, A Delayed Neutron Emitter (open access)

N-17, A Delayed Neutron Emitter

The decay scheme of a 4.2 second neutron emitter has been investigated in detail. Chemical and physical evidence shows that it is N{sup 17}, which emits beta rays to a broad excited state of O{sup 17}, which then breaks up into a neutron plus O{sup 16}. The energy spectrum of the neutrons is determined by measuring the energies of the O{sup 16} recoils in a proportional counter. The neutrons have a most probable energy of 0.9 Mev, a 'half width' of less than .5 Mev, and an upper limit of about 2 Mev. {beta}-recoil coincidences are observed, as predicted by the Bohr-Wheeler theory, and the {beta}-ray energy is measured by absorption. The beta rays in coincidence with neutrons have an upper limit of 3.7 {+-} 0.2 Mev. Beta-rays directly to the ground stat of O{sup 17} are not observed because of high background effects, but should have an energy of 8.7 Mev. Some evidence is presented to show that energy is conserved in the {beta}-n transition through the broad excited state in O{sup 17}.
Date: November 5, 1948
Creator: Alvarez, L. W.
Object Type: Report
System: The UNT Digital Library
A 48-Channel Pulse Height Analyzer for Alpha Energy Measurements (open access)

A 48-Channel Pulse Height Analyzer for Alpha Energy Measurements

Investigation report of new artificial heavy nuclides conducted at the laboratory.
Date: October 1, 1948
Creator: Ghiorso, A.; Jaffey, A. H.; Robinson, H. P. & Weissbourd, B.
Object Type: Report
System: The UNT Digital Library
100-300 Area program meeting of May 7, 1946 (open access)

100-300 Area program meeting of May 7, 1946

None
Date: May 7, 1946
Creator: Kidder, C. P.
Object Type: Report
System: The UNT Digital Library
100 Area monthly reports for 1947 (open access)

100 Area monthly reports for 1947

Activities concerned with the 100 area at the Hanford plant for the period of January, 1947, are described. A chronology of pile events, tube corrosion, and scrams are included.
Date: January 1947
Creator: unknown
Object Type: Report
System: The UNT Digital Library
100 Area Water Study (open access)

100 Area Water Study

This paper gives a cost breakdown of all the water facilities in the 100-F area for the month of January, 1948. Also given is the cost of chlorine for addition to the process water system along with where it is added and in what amounts. Lastly, the average figure for the hardness for the Columbia River water at Hanford.
Date: September 23, 1948
Creator: Beekman, S. W.
Object Type: Report
System: The UNT Digital Library
100 Areas: April 9--April 15 (open access)

100 Areas: April 9--April 15

Reported are: physics (B Pile, D Pile, F Pile, general physics); and water, corrosion, and engineering (process water control and pressure drop studies, purging studies, corrosion, graphite expansion, downcomer -- B Area).
Date: April 19, 1946
Creator: Jordan, W. E.
Object Type: Report
System: The UNT Digital Library
100 Areas: April 16--April 22 (open access)

100 Areas: April 16--April 22

Reported are: physics (B pile, D pile, F pile, general physics); and water, corrosion and engineering (process water control and pressure drop studies, purging studies, removal of process tube B-3671).
Date: April 26, 1946
Creator: Jordan, W. E.
Object Type: Report
System: The UNT Digital Library
100 Areas, February 5--February 11 (open access)

100 Areas, February 5--February 11

This report gives the weekly status for the B, D, and F piles. Also given is the reactivity status at the end of the week for each pile. Process water control and pressure drop studies are discussed. Finally a brief discussion is given of the graphite expansion problem.
Date: February 15, 1946
Creator: Jordan, W. E.
Object Type: Report
System: The UNT Digital Library
100 Areas: (For technical progress letter No. 95), April 23--29 (open access)

100 Areas: (For technical progress letter No. 95), April 23--29

Reported are: physics (B Pile, D Pile, F Pile, general physics); and water, corrosion and engineering (process water control and pressure drop studies, corrosion, graphite expansion).
Date: May 3, 1946
Creator: Jordan, W. E.
Object Type: Report
System: The UNT Digital Library
100 Areas: (For Technical Progress Letter No. 96), April 30--May 6 (open access)

100 Areas: (For Technical Progress Letter No. 96), April 30--May 6

None
Date: May 10, 1946
Creator: Jordan, W. E.
Object Type: Report
System: The UNT Digital Library
100 Areas: (For Technical Progress Letter No. 97), May 7--13 (open access)

100 Areas: (For Technical Progress Letter No. 97), May 7--13

Physics information for the D and F piles is presented. Thermal conductivity, reactivity, and irradiation levels are included. Concerning the cooling systems: process water control, pressure drip studies, purging studies, corrosion, and gun barrel clearance of expanded graphite are discussed. (GHH)
Date: May 17, 1946
Creator: Jordan, W. E.
Object Type: Report
System: The UNT Digital Library
100 Areas: (For technical progress letter No. 98), May 14--May 20 (open access)

100 Areas: (For technical progress letter No. 98), May 14--May 20

This technical progress report details 100 Area activities for the time period of May 14 through May 20, 1946.
Date: May 24, 1946
Creator: Jordan, W. E.
Object Type: Report
System: The UNT Digital Library
100 Areas: (For technical progress letter No. 99), May 21--May 27 (open access)

100 Areas: (For technical progress letter No. 99), May 21--May 27

This report details 100 Area reactor operation for the time period of May 21 through May 27, 1946.
Date: May 31, 1946
Creator: Jordan, W. E.
Object Type: Report
System: The UNT Digital Library
100 Areas: (For Technical Progress Letter No. 101), June 4--10 (open access)

100 Areas: (For Technical Progress Letter No. 101), June 4--10

None
Date: June 14, 1946
Creator: Jordan, W. E.
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
100 Areas: (For technical progress letter No. 104), June 25--July 1 (open access)

100 Areas: (For technical progress letter No. 104), June 25--July 1

None
Date: July 5, 1946
Creator: Jordan, W. E.
Object Type: Report
System: The UNT Digital Library
100 Areas: (For Technical Progress Letter No. 107), July 16--22 (open access)

100 Areas: (For Technical Progress Letter No. 107), July 16--22

This technical progress report details 100 Area activities for the time period of July 16 through July 22, 1946.
Date: July 26, 1946
Creator: Jordan, W. E.
Object Type: Report
System: The UNT Digital Library
100 Areas: (For Technical Progress Letter No. 109), July 30--August 5 (open access)

100 Areas: (For Technical Progress Letter No. 109), July 30--August 5

None
Date: August 9, 1946
Creator: Jordan, W. E.
Object Type: Report
System: The UNT Digital Library
100 Areas: (For technical progress letter No. 110), August 6--August 12 (open access)

100 Areas: (For technical progress letter No. 110), August 6--August 12

This report details 100 Area reactor operation for the time period of August 6 through August 12, 1946.
Date: August 16, 1946
Creator: Jordan, W. E.
Object Type: Report
System: The UNT Digital Library
100 Areas: (For technical progress letter No. 111), August 13--August 19 (open access)

100 Areas: (For technical progress letter No. 111), August 13--August 19

This technical progress report details 100 Area activities for the time period of August 13 through August 19, 1946.
Date: August 23, 1946
Creator: Jordan, W. E.
Object Type: Report
System: The UNT Digital Library
100 Areas, January 1 through January 7, 1946 (open access)

100 Areas, January 1 through January 7, 1946

During this period the B Pile operated at its assigned power level of 25 MW below rated level, except for 10 hours on January 5. The operating level of the D Pile remained at 25 MW below rating. The rate gain in excess reactivity during equilibrium operation has been about 1.8 inhours/day. On January 1, the power level of the F Pile was dropped to 25 MW below rating from its previous rated level. Rod A was in a favorable position to make a determination of the reactivity coefficients at the time. The data does indicate an upper limit of {minus}0.21 ih/MW for the metal coefficient. An overall coefficient of 0.20 ih/MW was obtained. The unit was shut down on January 3 for discharge of 129 tubes of metal. A summary of the present reactivity states of the B, D, and F Piles are given. Iron content of process water for the three piles is also given.
Date: January 11, 1946
Creator: Jordan, W. E.
Object Type: Report
System: The UNT Digital Library
100 Areas, January 15 through January 21 (open access)

100 Areas, January 15 through January 21

This report gives the weekly progress for the B, D, and F piles. The report also gives a brief discussion of the following activities: process water control and pressure drop studies; purging of D, B, and F piles; slug corrosion studies; tube corrosion studies; thimble corrosion studies; and graphite expansion studies.
Date: January 25, 1946
Creator: Jordan, W. E.
Object Type: Report
System: The UNT Digital Library
100 Areas, January 29 through February 4, 1946 (open access)

100 Areas, January 29 through February 4, 1946

The B Pile operated 25 MW below rated power level without interruption during the week. The D Pile was shut down on January 29. During the shutdown 103 tubes were discharged. The shut down lasted for 15 hours. During operation after the shut down power was reduced to meet graphite temperature restrictions. The F Pile was run steadily throughout the week at 25 MW below rated level. Iron content in the process water averaged 0.015, 0.011 and 0.010 ppm at B, D, and F Areas, respectively. Examination of the slugs discharged from four corrosion tubes at F has been completed. A summary of conditions found in the vertical and horizontal aluminium thimbles at D and F during a recent inspection are given. Results are given on the graphite expansion problem.
Date: February 8, 1946
Creator: Jordan, W. E.
Object Type: Report
System: The UNT Digital Library