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Energy dependent angular distribution of individual $\gamma$-rays in the $^{139}$La($n$, $\gamma$)$^{140}$La* reaction
- Source :
- Phys. Rev. C 104, 014601 (2021)
- Publication Year :
- 2021
-
Abstract
- Neutron energy-dependent angular distributions were observed for individual $\gamma$-rays from the 0.74 eV p-wave resonance of $^{139}$La+$n$ to several lower excited states of $^{140}$La. The $\gamma$-ray signals were analyzed in a two dimensional histogram of the $\gamma$-ray energy, measured with distributed germanium detectors, and neutron energy, determined with the time-of-flight of pulsed neutrons, to identify the neutron energy dependence of the angular distribution for each individual $\gamma$-rays. The angular distribution was also found for a photopeak accompanied with a faint p-wave resonance component in the neutron energy spectrum. Our results can be interpreted as interference between s- and p-wave amplitudes which may be used to study discrete symmetries of fundamental interactions.<br />Comment: 6 pages, 7 figures
- Subjects :
- Nuclear Experiment
Subjects
Details
- Database :
- arXiv
- Journal :
- Phys. Rev. C 104, 014601 (2021)
- Publication Type :
- Report
- Accession number :
- edsarx.2101.00262
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1103/PhysRevC.104.014601