Office of Scientific & Technical Information Technical Reports - 90 Matching Results

Search Results

Results: 1 - 24 next
open access

Calorimetry research progress report, March 1--31,, 1948

Description: Sixty-eight samples were assayed. The 5 calorimeters of type 30 were finished. Calorimeter 36, whose construction has been started, is an improved version of 30. A system of switches has been devised. A simple, fast, insensitive calorimeter for measuring high activity samples is being tested. The calculations on the half-life of postum were checked.
Date: December 31, 1948
Creator: Eichelberger, J.F.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

The changes in the blood of humans chronically exposed to low level gamma radiation

Description: Ten individuals received an average of 0.211 roentgens of gamma radiation per week for a 77 period week (December 1946-June 1948) for a total average dose of 16.21 roentgens. During this period these 10 men carried out an experiment involving materials which emit gamma radiation and were monitored by daily film badges. The radiation delivered during a week was received in a five day work week and usually they received approximately one-half of their weekly dosage during one of the five days. A … more
Date: December 31, 1948
Creator: Knowlton, N.P. Jr.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Classified information required by operators and others exposed to radiation hazards

Description: Information required by operators exposed to radiation hazards is discussed. All areas of the plant are subjected to radiation hazards similar to those in the radium industry. Personnel in these areas are required to wear pencil meters and special badges that are evidently not solely for identification. They are required to submit to medical examinations more stringent and frequent than usual. They are required to wear heavy gloves in one location, thin gloves in another, disposable hats or rub… more
Date: August 31, 1944
Creator: Parker, H. M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Control Section progress report, April 1--30, 1948

Description: From the Assay group, information is given for production concerning routine assaying, calorimetry, and neutron detection, unit 5, and future plans. The Micro-Assay group reports on production, development, research, units 5 & 6, and future plans. The Inventory group gives a report on production relating to alpha and DM slides, development of hoods,poppy counters and safe barriers, research, and future plans. Control Section Administration also reports on production of neutron counters, develop… more
Date: December 31, 1948
Creator: Rembold, E.A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Corrosion of Tuballoy-Molybdenum Alloys by Water

Description: The primary purpose of the corrosion work was to find a tuballoy alloy which would be sufficiently corrosion resistant to be useful for canned slugs even if some of the can were to leak. The secondary purpose was to obtain general corrosion data on tuballoy alloys.
Date: May 31, 1945
Creator: Hopkins, J.M.; Nelson, F. & Binger, W.W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Electrodeposition progress report, October 1--31, 1948

Description: The general points being considered in the construction of equipment for the production of High Level Postum Gauzes were mentioned in the last progress report. A more detailed discussion of the progress to date will be made here. The development work of plating postum out of hydrofluoric acid has proceeded to the point where it is desired to make some runs plating out quantities of postum from 10--250 units per gauze. The following points have been considered in a report for limited distributio… more
Date: December 31, 1948
Creator: Orban, E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Electrodeposition progress report, September 1--30, 1948

Description: Two difficulties which have been encountered in the attempts to prepare hydrofluoric acid solutions by precipitation and resolution are (1) dissolution of postum out of the solid precipitate leaving behind a solid bismuth compound and (2) the plastics used for a reaction vessel. Plastics tried have not held up under the combined effects of hydrofluoric acid, moderate heat, and alpha bombardment and the overall yield of the method is rather low. The plastics problem may be solved by the use of `… more
Date: December 31, 1948
Creator: Orban, E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Electrodeposition research progress report, August 1--31, 1948

Description: Studies to test the conversion of production solutions to postum (polonium 210) solutions of hydrofluoric acid involving compressed teflon are documented. Several experiments to assess the effect on production plating yields are described including varying time between rinses, current density, and use of detergents. Varying the time between rinses showed no correlation with the neutron counts on the finished gauzes.
Date: December 31, 1948
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Electrodeposition research progress report, July 1--31, 1948

Description: The cell used in production plating has a platinum anode and a platinum cathode. The potential at which the platinum cathode rests is not independent of the current, bat varies with it. In order to separate postum from other cations by electroplating out of solution, it is necessary to establish the plating potential at a value which will allow complete plating of postum, but will preclude the deposition of as many other cations as possible. This potential has been found to be about 0.00 v. to … more
Date: December 31, 1948
Creator: Orban, E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Electrodeposition research progress report, March 1--31, 1948

Description: Plating of Postum out of Nitric Acid and Hydrofluoric Acid Solutions -- W. Abel and W. Raiff. Postum was plated out of 1.5 normal nitric acid and 1.0 normal hydrofluoric acid under similar conditions. The hydrofluoric acid plate was better appearing, and had a much higher curie density. However, neutron counts in these runs were quite similar. Neutron Counts -- W. Abel and W. Raiff. A study of the change of neutron counts over a period of time was started. Conversion of Active Hydrofluoric Acid… more
Date: December 31, 1948
Creator: Orban, E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Electronics progress report, April 1--30, 1949

Description: Prospectus` of Band Pass Amplifiers for Proportional Counters and Instrumentation for the Study of the Electrodeposition Potential of Radioactive Elements have been submitted for review and approval. An error was found in calculations for the band pass amplifier discussed in Group 9 of the Electronics Progress Report,MLM-306, March 1--31, 1949, on the Cathode-Follower Probe. New calculations have been made and a band pass filter constructed to match the new values. Work on the cathode-follower … more
Date: December 31, 1949
Creator: Heyd, J. W. & Ohmart, P. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Electronics progress report, August 1--31, 1948

Description: Various studies centering on problems and their solutions encountered in electroplating production at Mound Laboratory. Some studies described include construction of the Scaler-Multiplier EL-229, operation of a methane-flow proportional counter, life-time decreases of production half-cells, and use of vibrating reed electrometer.
Date: December 31, 1948
Creator: Heyd, J.W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Electronics progress report, December 1--31, 1948

Description: Equipment and supplies are being packed for moving to Mound Laboratory. Work was started on the development of a cathode-follower circuit to match a B-wall tube to its connecting cable. The final report and maintenance manual for the scaler-multiplier are almost finished. The 10 millivolt Speedomax recorder used by Group 3 in the study of electrodeposition potentials has been replaced with a 150 millivolt Speedomax, utilizing two recording points for simultaneous recording of radioactive deposi… more
Date: December 31, 1948
Creator: Heyd, J. W. & Ohmart, P. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Electronics progress report, January 1--31, 1949

Description: Considerable study has been given to the problem of a cathode-follower coupling circuit for matching a B-wall tube to a properly terminated coaxial cable. A matched circuit makes it possible to obtain faster counting rates independent of practical cable lengths. A breadboard circuit has been built and first results indicate that a two millivolt signal at the input of the cathode-follower will operate the Model 162 Instrument Development Laboratory Scaling Unit when adjusted for maximum gain. Th… more
Date: January 31, 1949
Creator: Heyd, J.W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Electronics progress report, March 1--31, 1949

Description: With the completion of tests of the prototype cathode-follower, it was decided to produce three more models. These have been constructed and pass the same pulse as that of the prototype. Drawings are being made of these units. By the time these units had been completed, the amplifier of the scaler was modified so that its frequency response was essentially flat up to 4.5 megacycles. Using this amplifier and the cathode-follower, a study of the pulse shapes was made and four different pulse shap… more
Date: December 31, 1949
Creator: Heyd, J. W. & Ohmart, P. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Electronics progress report, October 1--31, 1948

Description: Upon completion of preliminary tests on the satisfactory operation of the Vibrating Reed Electrometer as a sensitive indication of alpha activity at the cathode of a plating cell, attention was directed toward the study of the detection of activity at the anode of the cell. Group 3 anticipates a lengthy study of cathodic and anodic deposition potentials of radioactive elements in solution. With the standard Research Plating Control, cathodic studies could be accomplished with relative ease, but… more
Date: December 31, 1948
Creator: Heyd, J. W. & Ohmart, P. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
Back to Top of Screen