The use of a lead slowing-down spectrometer (LSDS) is considered as a possible option for nondestructive assay of fissile material of used nuclear fuel. The primary objective is to quantify fissile isotopes, particularly 239Pu and 235U, via a direct measurement distinguishing them through their characteristic fission spectra in the LSDS. In this paper, we present several assay measurements perf...

The gamma field accompanying neutrons may, in certain circumstances, play an important role in the analysis of neutron dosimetry and even in the interpretation of radiation induced steel embrittlement. At the figh Flux Isotope Reactor pressure vessel the gamma-induced reactions dominate the responses of ' W p and 238u dosimeters, and9Be helium accumulation fluence monitors. The gamma induced at...

The future NFS installation will produce high intensity neutron beams from hundreds of keV up to 40MeV. Taking advantage of this facility, data of particular interest for the nuclear community in view of the development of the fast reactor technology will be measured. The development of an experimental setup called FALSTAFF for a full characterization of actinide fission fragments has been unde...

Cross sections and fission yields can be correlated, depending on the selection of integral experimental data. To support this statement, work presents use isotopic compositions (both for actinides products) from a sample irradiated in reactor, to construct correlations between various cross yields. This study is therefore complementing previous analysis demonstrating that different types nucle...

in the present research, we want to simulate the fission process of the excited nucleus 207at produced in fusion reaction 19f+188os in the framework of the modified statistical model with considering the effects of projection of spin about the symmetry axis, k, and temperature. in our simulation, we calculate the fission cross section and anisotropy of the fission fragment angular distribution ...

Recent developments in the nuclear data libraries used by the ORIGEN-S isotope generation and depletion code have enabled the extension of the code to accurately predict the delayed energy release rates from nuclear decay (decay heat) at very short cooling times of interest to reactor accident analysis. Historically this time domain has required integral methods, such as the ANS5.1 decay heat s...

A significant fraction of the UKPADD-2 decay-data library has been incorporated into version 2 of the Joint Evaluated File (JEF-2.2, OECD/NEA Data Bank). Subsequent reviews of JEF-2.2 have highlighted the need for further developments in the recommended data for fission and fusion applications. For example, UKAEA staff involved in fusion studies identified 80 nuclides for which improvements in ...

The RACE Project, which is being conducted within the U.S. Department of Energy’s Advanced Fuel Cycle Initiative (AFCI), is a series of accelerator-driven subcritical systems (ADSS) experiments. These ADSS experiments are being conducted with a compact, transportable subcritical assembly at the Idaho State University’s Idaho Accelerator Center (ISU-IAC) in 2004 and with TRIGA reactors at the Un...

Nuclear power plants are intense sources of antineutrinos. Their energy spectrum and emitted flux depend on the composition of the nuclear fuel and on the thermal power of the reactor. These properties led to potential applications of neutrino physics: they could be used to non intrusively monitor a nuclear reactor. To this purpose, a better knowledge of the antineutrino energy spectra arising ...