| Autor: |
CO Cogburn, J. W. Rogers, G. P. Lamaze, FJ Wheeler, LM Hodgson, R. J. Gehrke, J. D. Baker, JG Williams, SC Apple, E. D. McGarry, F. J. Schima |
| Rok vydání: |
2008 |
| Předmět: |
|
| DOI: |
10.1520/stp10081s |
| Popis: |
The spectrum averaged cross sections of the /sup 93/Nb(n,n') /sup 93m/Nb reaction in two standard fission neutron spectra have been measured by the activation method. The two standard spectra were the /sup 252/Cf spontaneous fission neutron spectrum and the thermal neutron induced fission neutron spectrum of /sup 235/U. Effective free-field neutron fluences were established by neutron source strength calibration against the national standard Ra-Be source, fluence transfer from intermediate standard sources, and Monte Carlo scattering corrections. Activity measurements were performed by x-ray counting using a variety of Ge and Si(Li) spectrometers with sources prepared by deposition of niobium fluoride on analytical paper discs. 16 refs., 4 figs., 1 tab. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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