Determination of Eta by Comparison of for U233and Pu239with for U235in a Flux Trap Critical Assembly
- 1 March 1962
- journal article
- research article
- Published by Taylor & Francis in Nuclear Science and Engineering
- Vol. 12 (3) , 359-363
- https://doi.org/10.13182/nse62-a28086
Abstract
The values of eta for U233 and eta for Pu239 have been determined by a reactivity coefficient measurement. An aqueous solution of each isotope was introduced axially into a critical cylindrical annular flux trap reactor, and the resulting reactivity change was measured by period determinations. From these data the ratios and were obtained. Using recently measured values of eta for U235 and the absorption cross sections in this ratio, the thermal values of 2.317 ± 0.040 for eta of U233 and 2.032 ± 0.053 for eta of Pu239 are obtained. Correction to a neutron velocity of 2200 meters/sec by using the appropriate g-factor gives a value of 2.317 ± 0.040 for eta of U233 and 2.082 ± 0.054 for eta of Pu239.Keywords
This publication has 4 references indexed in Scilit:
- Determination of Eta by Comparison of for U233and Pu239with for U235in a Flux Trap Critical AssemblyNuclear Science and Engineering, 1962
- Manganese Bath Measurements ofηof U233and U235Nuclear Science and Engineering, 1960
- RESONANCE ABSORPTION OF NEUTRONS IN NUCLEAR REACTORS. (thesis)Published by Office of Scientific and Technical Information (OSTI) ,1959
- Zur Methodik der NeutronensondenThe European Physical Journal A, 1943