open access

https://hdl.handle.net/2115/57482

Sensitivity and uncertainty analysis for reactor stable period induced by positive reactivity using one-point adjoint kinetics equation

英語

decay constant

2013-12-01

Taylor & francis ltd

Journal of nuclear science and technology

50(12)

1150-1160

In order to better predict the kinetic behavior of a nuclear fission reactor, improvement of delayed neutron parameters is essential. Since it is required to establish a path from the microscopic nuclear data to the macroscopic delayed neutron parameters for the improvement, the present paper identifies important nuclear data for reactor kinetics. Sensitivities of the reactor stable period, which describes reactor kinetic behavior, to microscopic nuclear data such as independent fission yields, decay constants and decay branching ratios are calculated efficiently by using the adjoint kinetics equation. Furthermore, nuclide-wise and nuclear data-wise uncertainties of the reactor stable period are quantified using the variance data given in the nuclear data file, and the nuclear data that require further improvement are identified.The results obtained through the present study are quite helpful, and can be a driving force for further nuclear physics studies.

学術雑誌論文

Accepted Manuscript

This is an Author's Accepted Manuscript of an article published in Journal of Nuclear Science and Technology (Published in Dec.2013), available online at: http://www.tandfonline.com/doi/pdf/10.1080/00223131.2013.838332.

0022-3131