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A high intensity positron beam at the Brookhaven reactor

Description: We describe a high intensity, low energy positron beam utilizing high specific activity /sup 64/Cu sources (870 Ci/g) produced in a reactor with high thermal neutron flux. Fast-to-slow moderation can be performed in a self moderation mode or with a transmission moderator. Slow positron rates up to 1.6 x 10/sup 8/ e/sup +//s with a half life of 12.8 h are calculated. Up to 1.0 x 10/sup 8/ e/sup +//s have been observed. New developments including a Ne moderator and an on-line isotope separation p… more
Date: January 1, 1987
Creator: Weber, M.; Lynn, K. G.; Roellig, L. O.; Mills, A. P., Jr. & Moodenbaugh, A. R.
Partner: UNT Libraries Government Documents Department
open access

Isotope and Nuclear Chemistry Division annual report FY 1986, October 1985-September 1986

Description: This report describes progress in the major research and development programs carried out in FY 1986 by the Isotope and Nuclear Chemistry Division. The report includes articles on radiochemical diagnostics and weapons tests; weapons radiochemical diagnostics research and development; other unclassified weapons research; stable and radioactive isotope production and separation; chemical biology and nuclear medicine; element and isotope transport and fixation; actinide and transition metal chemis… more
Date: June 1, 1987
Creator: Heiken, J.H. (ed.)
Partner: UNT Libraries Government Documents Department
open access

The design of an isotope separation system for JET

Description: Cryogenic distillation is planned as one of the processes to be used for isotope separation at JET. Three possible configurations of columns for this service are presented and discussed. The ability to easily control a system of columns must weigh heavily in the final selection of a process for construction. 5 refs., 6 figs., 6 tabs.
Date: October 1, 1987
Creator: Sherman, R.H.
Partner: UNT Libraries Government Documents Department
open access

Design and component specifications for high average power laser optical systems

Description: Laser imaging and transport systems are considered in the regime where laser-induced damage and/or thermal distortion have significant design implications. System design and component specifications are discussed and quantified in terms of the net system transport efficiency and phase budget. Optical substrate materials, figure, surface roughness, coatings, and sizing are considered in the context of visible and near-ir optical systems that have been developed at Lawrence Livermore National Lab… more
Date: January 1, 1987
Creator: O'Neil, R. W.; Sawicki, R. H.; Johnson, S. A. & Sweatt, W. C.
Partner: UNT Libraries Government Documents Department
open access

An overview of copper-laser development for isotope separation

Description: We have developed a copper-laser pumped dye-laser system that addresses all of the requirements for atomic vapor laser isotope separation. The requirement for high average power for the laser system has led to the development of copper-laser chains with injection-locked oscillators and multihundred-watt amplifiers. By continuously operating the Laser Demonstration Facility, we gain valuable data for further upgrade and optimization.
Date: March 13, 1987
Creator: Warner, B.E.
Partner: UNT Libraries Government Documents Department
open access

Gadolinium-153 production at the Oak Ridge National Laboratory

Description: Gadolinium-153 production at the Oak Ridge National Laboratory (ORNL) involves the neutron irradiation of natural europium oxide (47.8% /sup 151/Eu, 52.2% /sup 153/Eu). This target material undergoes a series of neutron captures and radioactive decays to produce the desired /sup 153/Gd product. Several undesirable europium isotopes (/sup 152/Eu, /sup 154/Eu, and /sup 156/Eu) are also produced during this irradiation process. Recent technical advances and other improvements in the radiochemical … more
Date: January 1, 1987
Creator: Ramey, D. W.
Partner: UNT Libraries Government Documents Department
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