Measurement of yield ratios for the isomeric pair 137m, gCe in the 141Pr(γ, x)137m, gCe reactions with bremsstrahlung end-point energies of 50-, 60-, and 70-MeV. (November 2020)

• Record Type: Journal Article
• Authors: Van Do, Nguyen; Luan, Nguyen Thanh; Xuan, Nguyen Thi; Khue, Pham Duc; Hien, Nguyen Thi; Kim, Guinyun; Kim, Kwangsoo; Shin, Sung-Gyun; Kye, Yong-uk; Cho, Moo-Hyun
• Is Part Of: Radiation physics and chemistry. Volume 176(2020:Nov.)
• Publication Date: 2020-11
• Subjects: Isomeric yield ratio -- 141Pr(γ, x)137m, gCe reaction -- Activation method -- γ-ray spectrometry -- Interference corrections; Radiation chemistry -- Periodicals; Radiometry -- Periodicals; Radiation -- Periodicals; Chimie sous rayonnement -- Périodiques; 539.2
• DOI: 10.1016/j.radphyschem.2020.109016
• Languages: English
• ISSNs: 0969-806X

Abstract

Abstract: We have measured the yield ratio of the high spin state to the low spin state of the isomeric pair 137m, g Ce produced in the 141 Pr(γ, x) 137m, g Ce reaction. The experiments were performed by irradiating three praseodymium foils with bremsstrahlung end-point energies of 50-, 60-, and 70-MeV. The induced activities of the 137m Ce and 137g Ce were measured by means of γ-ray spectroscopy. The γ-ray interference and the contributions of other radioisotopes to the measured activity of both the 137m Ce and 137g Ce were investigated and corrected. The obtained results are compared with the theoretical predictions using the computer code TALYS 1.8. The present results for the 141 Pr(γ, x) 137m, g Ce reaction were determined for the first time. Highlights: Measured the isomeric yield ratios for the 137m, g Ce produced in the 141 Pr(γ, x) reaction. Irradiated three 141 Pr foils with bremsstrahlung end-point energies of 50-, 60-, and 70-MeV. Compared with the theoretical predictions obtained from the TALYS 1.8.