Electromagnetic Research Division Quarterly Progress Report, Part I for Period Ending June 30, 1952 (open access)

Electromagnetic Research Division Quarterly Progress Report, Part I for Period Ending June 30, 1952

From abstract: "On the 86-inch cyclotron a 41-kw beam has been calorimetered at a net ion loading efficiency of 40%; the average proton current was 1.85 ma at 22.5 Mev. Practical specific yields have been determined for (p,2n) reactions on zinc and bismuth. The investigation of products of proton-induced fission of uranium has been continued and new techniques are being used in measuring angular distribution of reaction products. The 63-inch heavy particle cyclotron is now in operation; N+++ particles have been accelerated to ~25 Mev. In preliminary tests, induced activities have been detected in carbon, nitrogen, and oxygen targets. A hot-cathode ion source is ready for test operation. The 22-inch cyclotron is being used in an investigation of the problems associated with the use of rf and dc electrodes for the acceleration of protons from the ion source into the dees. Radiation-induced corrosion in Inconel tubing containing #21 eutectic (ANP) has been produced by proton irradiation in the 86-inch cylclotron; it is shown that the corrosion was not due to thermal effects. Approximately 150 grams of highly purified U 238 (< 5 ppm U 235) have been prepared, and two grams of thorium 230 (ionium) has been enriched to 90.6%."
Date: November 14, 1952
Creator: Livingston, Robert S. & Howard, F. T.
System: The UNT Digital Library
A Survey of Calutron Charge Materials for Stable Isotopes Separations (open access)

A Survey of Calutron Charge Materials for Stable Isotopes Separations

Report discussing calutron charge materials that can be used for the stable separation of isotopes.
Date: November 14, 1951
Creator: Keim, C. P.
System: The UNT Digital Library
A Talk on NMR Applied to Polymer Research Given at the Eastern Analytical Symposium - November 14, 1962 (open access)

A Talk on NMR Applied to Polymer Research Given at the Eastern Analytical Symposium - November 14, 1962

The nature and types of internal molecular and thermal motions that polymer chains and polymer segments undergo have a great bearing on the physical behavior of polymeric solids. A relatively new tool is now available that permits us to observe and study internal thermally-induced motions directly at the atomic or molecular level rather than from macroscopic observations. this tool is nuclear magnetic resonance spectroscopy. This talk discusses (1) the nature of nuclear magnetic resonance, (2) NMR line shapes and the influence of temperature, (3) NMR line widths and second moments as a function of temperature, and (4) lists six general conclusions.
Date: November 14, 1962
Creator: Sauer, John A.
System: The UNT Digital Library
Metallurgical Laboratory, Chemical Research - Radiation Chemistry, Report for the Month Ending October 31, 1944 (open access)

Metallurgical Laboratory, Chemical Research - Radiation Chemistry, Report for the Month Ending October 31, 1944

Technical report with short reports on (1) Effect of radiation on organic compounds; (2) Effect of radiation on separation processes; (3) Effect of radiation on water and aqueous systems; and (4) Effect of neutrons on graphite.
Date: November 14, 1944
Creator: Hogness, T. R. (Thorfin Rusten), 1894- & Burton, Milton, 1902-
System: The UNT Digital Library