Yield Ratios of Isomeric Pairs \(^{196m,g}\)Au, \(^{186m,g}\)Ir, and \(^{183m,g}\)Os in the \(^{197}\)Au\((\gamma,xnyp)\) Reactions with 2.5 GeV Bremsstrahlung

Nguyen Van Do; Dinh Trong Tran; Tien Thanh Kim; Duc Khue Pham; Hee-Seok Lee; Guinyun Kim

doi:10.15625/0868-3166/17379

Author affiliations

Authors

Nguyen Van Do
Tran Dinh Trong Institute of Physics, Vietnam Academy of Science and Technology,10 Dao Tan, Hanoi, Vietnam
Kim Tien Thanh Institute of Physics, Vietnam Academy of Science and Technology,10 Dao Tan, Hanoi, Vietnam
Pham Duc Khue Institute for Nuclear Science and Technology, VINATOM, 179 Hoang Quoc Viet, Hanoi, Vietnam
Hee-Seok Lee Pohang Accelerator Laboratory, Pohang University of Science and Technology, Pohang 790-784, Republic of Korea
Guinyun Kim Department of Physics, Kyungpook National University, Daegu 702-701, Republic of Korea

DOI:

https://doi.org/10.15625/0868-3166/17379

Keywords:

isomeric yield ratio, 197Au(\(\gamma\);xnyp), 196m;gAu, 186m;gIr, 183m;gOs, 2.5 GeV bremsstrahlung, activation method

Abstract

The yield ratios of high to low spin states of the ^196m,gAu, ^186m,gIr, and ^183m,gOs isomeric pairs produced by ¹⁹⁷Au(γ,xnyp) reactions with a bremsstrahlung end-point energy of 2.5 GeV have been measured. Measurements were performed by the activation method in combination with off-line γ-ray spectrometry. The induced activity of the studied radionuclides was derived from the photo-peak area of the selected γ-ray after making the necessary corrections. The isomeric yield ratios obtained in this work are the first measurement. The relationships between the yield ratios of studied isomeric pairs with the value of high spin states, the spin difference between the high spin states and the target nucleus, and the number of nucleons emitted from the target nucleus are discussed.

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