Nuclear Resonance Fluorescence of 235U Measured with High-Resolution LaBr3(Ce) Scintillation Detectors

A nuclear resonance fluorescence (NRF) experiment was performed on a 235 U target with quasi-monochromatic $\gamma$-rays at the High Intensity $\gamma$-ray Source (HI$\gamma$S) facility using a 1733 keV resonant energy. A LaBr 3 (Ce) detector array consisting of eight cylindrical detectors, each wit...

Full description

Saved in:
Bibliographic Details
Published inJpn J Appl Phys Vol. 52; no. 10; pp. 106401 - 106401-4
Main Authors Omer, Mohamed, Negm, Hani, Zen, Heishun, Daito, Izuru, Kii, Toshiteru, Masuda, Kai, Ohgaki, Hideaki, Hajima, Ryoichi, Shizuma, Toshiyuki, Hayakawa, Takehito, Kikuzawa, Nobuhiro
Format Journal Article
LanguageEnglish
Published The Japan Society of Applied Physics 25.10.2013
Online AccessGet full text

Cover

More Information
Summary:A nuclear resonance fluorescence (NRF) experiment was performed on a 235 U target with quasi-monochromatic $\gamma$-rays at the High Intensity $\gamma$-ray Source (HI$\gamma$S) facility using a 1733 keV resonant energy. A LaBr 3 (Ce) detector array consisting of eight cylindrical detectors, each with a length of 7.62 cm and a diameter of 3.81 cm, was implemented in this measurement. Moreover, a high-purity germanium (HPGe) detector array consisting of four detectors, each of which has a relative efficiency of 60%, was used as the benchmark for the measurement taken using the LaBr 3 (Ce) detector array. The integrated cross section of the NRF level, measured with LaBr 3 (Ce) detectors, showed good agreement with the available data.
Bibliography:(Color online) Schematic diagram of the NRF experimental setup. (Color online) Beam profile as measured with the flux monitor. The red curve is a double Gaussian fitting to account for the Compton edge, while the dashed curve is the fitting for the incident beam, which the flux is calculated from. (Color online) NRF spectrum measured with the HPGe detectors. The red curve is a fitting to the NRF photo peak at 1733 keV. (Color online) (a) On-beam (blue) and off-beam (red) spectra measured with LaBr 3 (Ce) detector array. The inset shows a zoomed portion of the spectra around the NRF resonant energy. (b) On-beam spectrum after subtracting the off-beam spectrum. The red curve represents a fit of the NRF peak with the sum of Gaussian and linear functions.
ISSN:0021-4922
1347-4065
DOI:10.7567/JJAP.52.106401