Neutron Induced Fission Fragment Angular Distributions, Anisotropy, and Linear Momentum Transfer Measured with the NIFFTE Fission Time Projection Chamber
| Autor: | Jonathan B. King, D. Higgins, T. R. Towell, Z. Q. Case, J. L. Klay, T. Classen, A. Kemnitz, C. L. Towell, D. L. Duke, L. Yao, E. Leal, E. Guardincerri, N. Fotiadis, M. Heffner, Samuele Sangiorgio, G. Oman, N. Walsh, L. Snyder, C. A. Hagmann, K. Kazkaz, M. P. Mendenhall, Christopher Prokop, V. Geppert-Kleinrath, K. J. Kiesling, Joseph Latta, T.S. Watson, Brett Manning, K. J. Brewster, Nathaniel Bowden, R. S. Towell, D. Hensle, M. Monterial, M. Lynch, J. A. Magee, B. Seilhan, J. T. Barker, J. S. Barrett, C. R. Hicks, Shea Mosby, W. Loveland, Walid Younes, Uwe Greife, J. Bundgaard, Robert Casperson, D. Cebra, Fredrik Tovesson, L. D. Isenhower, Kyle Schmitt, J. Gearhart |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Physics
Range (particle radiation) Time projection chamber 010308 nuclear & particles physics Fission Nuclear Theory FOS: Physical sciences Observable Tracking (particle physics) 01 natural sciences Nuclear physics Cross section (physics) 0103 physical sciences Physics::Atomic and Molecular Clusters Neutron Nuclear Experiment (nucl-ex) 010306 general physics Anisotropy Nuclear Experiment |
| DOI: | 10.48550/arxiv.2001.09381 |
| Popis: | The Neutron Induced Fission Fragment Tracking Experiment (NIFFTE) collaboration has performed measurements with a fission time projection chamber (fissionTPC) to study the fission process by reconstructing full three-dimensional tracks of fission fragments and other ionizing radiation. The amount of linear momentum imparted to the fissioning nucleus by the incident neutron can be inferred by measuring the opening angle between the fission fragments. Using this measured linear momentum, fission fragment angular distributions can be converted to the center-of-mass frame for anisotropy measurements. Angular anisotropy is an important experimental observable for understanding the quantum mechanical state of the fissioning nucleus and vital to determining detection efficiency for cross section measurements. Neutron linear momentum transfer to fissioning $^{235}$U, $^{238}$U, and $^{239}$Pu and fission fragment angular anisotropy of $^{235}$U and $^{238}$U as a function of neutron energies in the range 130 keV--250 MeV are presented. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|