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Your search keyword '"Gooden, M. E."' showing total 2 results
Start Over Author "Gooden, M. E." Topic fission products
2 results on '"Gooden, M. E."'

1. Fission Product Yield Measurements from Neutron-Induced Fission of 235,238 U and 239Pu.

Author

Mitchell, A.J., Pavetich, S., Koll, D., Stoyer, M. A., Tonchev, A. P., Silano, J. A., Gooden, M. E., Wilhelmy, J. B., Tornow, W., Howell, C. R., Krishichayan, F., and Finch, S.

Subjects
FISSION products, NEUTRON beams, NEUTRON temperature, NUCLEAR physics, SELF-consistent field theory
Abstract

Fission product yields (FPY) are one of the most fundamental quantities that can be measured for a fissioning nucleus and are important for basic and applied nuclear physics. Recent measurements using mono-energetic and pulsed neutron beams generated using Triangle Universities Nuclear Laboratory's tandem accelerator and employing a dual fission chamber setup have produced self-consistent, high-precision data critical for testing fission models for the neutron-induced fission of 235,238U and 239Pu between neutron energies of 0.5 to 15.0 MeV. These data have elucidated a low-energy dependence of FPY for several fission products using irradiations of varying lengths and neutron energies. This paper will discuss new measurements just beginning utilizing a RApid Belt-driven Irradiated Target Transfer System (RABITTS) to measure shorterlived fission products and the time dependence of fission yields, expanding the measurements from cumulative towards independent fission yields. The uniqueness of these FPY data and the impact on the development of fission theory will be discussed. [ABSTRACT FROM AUTHOR]

Published
2020
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2. Exploratory study of fission product yields of neutron-induced fission of 235U, 238U, and 239Pu at 8.9 MeV.

Author

Bhatia, C., Fallin, B. F., Gooden, M. E., Howell, C. R., Kelley, J. H., Tornow, W., Arnold, C. W., Bond, E., Bredeweg, T. A., Fowler, M. M., Moody, W., Rundberg, R. S., Rusev, G. Y., Vieira, D. J., Wilhelmy, J. B., Becker, J. A., Macri, R., Ryan, C., Sheets, S. A., and Stoyer, M. A.

Subjects
*URANIUM isotopes, *PLUTONIUM isotopes, *FISSION products, *URANIUM 238, *ACTINIDE elements, *NEUTRON beams, *MONOENERGETIC radiation
Abstract

Using dual-fission chambers each loaded with a thick (200-400-mg/cm²) actinide target of 235,238U or 239Pu and two thin (~10-100-μg/cm²) reference foils of the same actinide, the cumulative yields of fission products ranging from 92Sr to 147Nd have been measured at En = 8.9MeV. The ²H(d,n)³He reaction provided the quasimonoenergetic neutron beam. The experimental setup and methods used to determine the fission product yield (FPY) are described, and results for typically eight high-yield fission products are presented. Our FPYs for 235U(n,f), 238U(n,f), and 239Pu(n,f) at 8.9 MeV are compared with the existing data below 8 MeV from Glendenin et al. [Phys. Rev. C 24, 2600 (1981)], Nagy et al. [Phys. Rev. C 17, 163 (1978)], Gindler et al. [Phys. Rev. C 27, 2058 (1983)], and those of Mac Innes et al. [Nucl. Data Sheets 112, 3135 (2011)] and Laurec et al. [Nucl. Data Sheets 111, 2965 (2010)] at 14.5 and 14.7 MeV, respectively. This comparison indicates a negative slope for the energy dependence of most fission product yields obtained from 235U and 239Pu, whereas for 238U the slope issue remains unsettled. [ABSTRACT FROM AUTHOR]

Published
2015
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