Journal of Radioanalytical and Nuclear Chemistry

, Volume 300, Issue 3, pp 1121–1130 | Cite as

Independent isomeric yield ratios of 95m,gNb in the natMo(γ, pxn) and natZr(p, xn) reactions

  • Haladhara Naik
  • Guinyun Kim
  • Kwangsoo Kim
  • Muhammad Zaman
  • Sung-Chul Yang
  • Muhammad Sahid
  • Manwoo Lee
  • Sung-Gyun Shin
  • Ashok Goswami
  • Moo-Hyun Cho
Article
First Online:
Received:

Abstract

The independent isomeric yield ratios of 95m,gNb from the natMo(γ, pxn) reactions with bremsstrahlung end-point energies of 45, 50, 55, 60, and 70 MeV were determined by an activation and an off-line γ-ray spectrometric technique at the Pohang accelerator laboratory (PAL), Korea. The isomeric yield ratios of 95m,gNb from the natZr(p, xn) reactions were also determined in eight different proton energies within 19.4–44.7 MeV by a stacked-foil activation and an off-line γ-ray spectrometric technique using the MC-50 cyclotron of Korea Institute of Radiological and Medical Sciences (KIRAMS), Korea. The measured isomeric yield ratios of 95m,gNb from the present work and the literature data in the natMo(γ, pxn) and natZr(p, xn) reactions were compared with the similar literature data in the natMo(p, αxn) reactions. It was found that the isomeric yield ratio of 95m,gNb increases with projectile energy, which indicate the effect of excitation energy. However, at the same excitation energy, the isomeric yield ratios of 95m,gNb in the natZr(p, xn) and natMo(p, αxn) reactions are higher than those in the natMo(γ, pxn) reaction, which indicates the role of input angular momentum. The isomeric yield ratios of 95m,gNb in the natMo(γ, pxn), natZr(p, xn), and natMo(p, αxn) reactions were also calculated using computer code TALYS 1.4. The calculated isomeric yield ratios of 95m,gNb from three reactions increase with excitation energy. However, in all the three reactions, the calculated values are significantly higher than the experimental data.

Keywords

Isomeric yield ratio natMo(γ, pxn)95m,gNb reaction natZr(p, xn)95m,gNb reaction, Excitation energy Input angular momentum, Eγ = 45–70 MeV Ep = 19.4–44.7 MeV 
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Notes

Acknowledgments

The authors are thankful to the staff of electron linac at Pohang Accelerator Laboratory (PAL) and the MC-50 Cyclotron Laboratory in the Korea Institute of Radiological and Medical Sciences (KIRAMS), Korea for the excellent operation and their support to carry out the experiments. This research partly was supported by the National Research Foundation of Korea (NRF) through a grant provided by the Korean Ministry of Science, ICT and Future Planning (MSIP) (NRF-2013R1A2A2A01067340) and by the Institutional Activity Program of Korea Atomic Energy Research Institute.

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Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2014

Authors and Affiliations

  • Haladhara Naik
    • 1
  • Guinyun Kim
    • 2
  • Kwangsoo Kim
    • 2
  • Muhammad Zaman
    • 2
  • Sung-Chul Yang
    • 2
  • Muhammad Sahid
    • 2
  • Manwoo Lee
    • 3
  • Sung-Gyun Shin
    • 4
  • Ashok Goswami
    • 1
  • Moo-Hyun Cho
    • 4
  1. 1.Radiochemistry DivisionBhabha Atomic Research CentreMumbaiIndia
  2. 2.Department of PhysicsKyungpook National UniversityDaeguRepublic of Korea
  3. 3.Research CenterDongnam Institute of Radiological and Medical SciencesBusanRepublic of Korea
  4. 4.Division of Advanced Nuclear EngineeringPohang University of Science and TechnologyPohangRepublic of Korea

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