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Supplemental Technical Report on an Improved Process for the Manufacture of High Purity Calcium, Period Covered November 10, 1948 to January 31, 1949

Description: Abstract. Experimental work was carried out to improve material conversion efficiency and to reduce handling costs inherent in the present process for production of high purity calcium. Charges up to 54 pounds were handled successfully in the equipment available. Material losses were reduced and more complete removal of alkali and alkaline earth metals was effected by controlled pressures of inert gas and by melting under positive pressure of Argon.
Date: January 31, 1949
Creator: Brown, H. & Woodberry, P.
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Method of Operation of the Permeameter

Description: In H measurements, the measured flux-linkage change represents twice the value of H to be plotted. In B measurements the bucking coil links flux equal to the air-flux in the B-measuring coils. The measured flux change therefore corresponds to twice the flux of intrinsic magnetization in the sample.
Date: January 21, 1949
Creator: Richardson, R. E.
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Events of importance for week ending January 26, 1949

Description: Redox operations and waste metal recovery are reported. Construction in the 100-H, 100-DR, P-10 area pile areas and in the 234-5, 241-BY waste storage, and redox areas, process areas and Richland village are described. Visitor information is given. And construction progress at Schenectady is reported.
Date: January 28, 1949
Creator: Schlemmer, F. C.
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Analytical Services - Pile Area Laboratories

Description: This is a report on Analytical Services of the Pile Area Laboratories at Hanford. Pertinent facts are listed regarding the analytical services currently provided by the Analytical Section in the pile areas. The work of the Analytical Section in the pile areas may be classified into five categories as follows: Analysis of pile process water, analysis of power plant (boiler) waters, analysis of drinking water, analysis of columbia (non-process) and Yakima River water, and preparation of reagents … more
Date: January 28, 1949
Creator: Curtis, R. E.
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P Division monthly report, December 1948

Description: This progress report discusses activities at the P Division for the month of December 1948. All piles operated at 275 megawatts throughout the month except for the outages listed under Area activities in this report. An unscheduled power outage occurred in the 300 Area on December 2. No difficulties were encountered except for the lost operating time. A total of 103 tons of metal was discharged from the piles during the month. Operating schedules in the 300 Area were reduced from a six-day week… more
Date: January 14, 1949
Creator: Lee, Edward P.
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Nitrogen 12

Description: N{sup 12} is shown to have a half life of 12.5 {+-} 1 milliseconds, and a positron upper limit of 16.6 {+-} 0.2 Mev. It is produced by the reaction C{sup 12}(p,n)N{sup 12}, and has a threshold proton energy of 20.0 Mev. This indicates that N{sup 12} is within about 200 Kev of being unstable against proton emission. The mass of N{sup 12} is 12.0228 {+-} 0.00015, and the beta transition is allowed.
Date: January 19, 1949
Creator: Alvarez, Luis W.
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Progress Report No. 69. Dec. 15, 1948 to Jan. 15, 1949

Description: This is the progress report for the University of California, Radiation Laboratory for December 15, 1948-January 15, 1949. It discusses the following: (1) Bevatron; (2) 184-inch Cyclotron Program; (3) 60-inch Cyclotron Program; (4) Synchrotron Operation; (5) Linear Accelerator and Van de Graaff Operation; (6) Experimental Physics; (7) Theoretical Physics, (8) Isotope Separation; (9) Chemistry Departments; (10) Medical Physics; and (11) Health Physics and Chemistry.
Date: January 30, 1949
Creator: Authors, Various
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Sonic decontamination

Description: The supersonic method of cleaning glassware is an outgrowth of the fact that it has been heretofore impossible to manually clean ground glass and quartz joints because the activity became lodged in the small pores of the ground surfaces. It has been theorized that the nature of the forces binding polonium to the glass is similar to that of the chemical bond but are less intense. The problem then becomes one of finding a force greater than this binding energy, capable of freeing the activity fro… more
Date: January 25, 1949
Creator: Brodbeck, R. M. & Schommer, G. R.
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Summary report on measurement and control of radioactive particulate contamination for Engineering Division, Atomic Energy Commission

Description: The purpose of this report is to review the characteristics of particulate contamination which set it apart from the other phases of the radiation control program and make it necessary to apply to it different concepts, analytical procedures, and control measures. The program is treated as one in the appraisal and control of dusts and fumes. The fact that the material is radioactive introduces certain new details, but this does not make the problem basically different from others in the field o… more
Date: January 1, 1949
Creator: Hatch, T.F.
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Radioactive decontamination of metals by electropolishing

Description: Prior to April 1948 the generally accepted method of reducing the radioactive contamination of metal tools and laboratory apparatus was a series of rinses in aqua regia or various other concentrated acids. This method proved unsatisfactory for three reasons. (A) It was not a dependable method of removing activity. (B) It had a delecterious effect on tools in that it caused serious pitting, which resulted in weakened parts, and exposed a bare metal that was subject to very rapid corrosion. (C) T… more
Date: January 25, 1949
Creator: Brodbeck, R. M. & Schommer, G. R.
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