Measurement of the Pu-239(n,f)/U-235(n,f) Cross-Section Ratio with the NIFFTE fission Time Projection Chamber

The Pu-239(n,f )/U-235(n,f) cross-section ratio has been measured with the fission Time Projection Chamber (fissionTPC) from 100 keV to 100 MeV. The fissionTPC provides three-dimensional reconstruction of fission-fragment ionization profiles, allowing for a precise quantification of measurement unce...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Veröffentlicht in:	Nuclear data sheets 2021-12, Vol.178, p.1-40
Hauptverfasser:	Snyder, L., Anastasiou, M., Bowden, N. S., Bundgaard, J., Casperson, R. J., Cebra, D. A., Classen, T., Dongwi, D. H., Fotiades, N., Gearhart, J., Geppert-Kleinrath, Greife, U., Hagmann, C., Heffner, M., Hensle, D., Higgins, D., Isenhower, L. D., Kazkaz, K., Kemnitz, A., King, J., Klay, J. L., Latta, J., Leal-Cidoncha, E., Loveland, W., Magee, J. A., Manning, B., Mendenhall, M. P., Monterial, M., Mosby, S., Neudecker, D., Prokop, C., Sangiorgio, S., Schmitt, K. T., Seilhan, B., Tovesson, F., Towell, R. S., Walsh, N., Watson, T. S., Yao, L., Younes, W.
Format:	Artikel
Sprache:	eng
Schlagworte:	Physical Sciences Physics Physics, Nuclear Science & Technology
Online-Zugang:	Volltext
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	The Pu-239(n,f )/U-235(n,f) cross-section ratio has been measured with the fission Time Projection Chamber (fissionTPC) from 100 keV to 100 MeV. The fissionTPC provides three-dimensional reconstruction of fission-fragment ionization profiles, allowing for a precise quantification of measurement uncertainties. The measurement was performed at the Los Alamos Neutron Science Center which provides a pulsed white source of neutrons. The data are recommended to be used as a cross-section ratio shape. A discussion of the status of the absolute normalization and comparisons to ENDF evaluations and previous measurements is included.
ISSN:	0090-3752 1095-9904
DOI:	10.1016/j.nds.2021.11.001