Measurement of isomeric yield ratios for Nb-93(gamma,4n)Nb-89m,Nb-g and Mo-nat(gamma,xn1p)Nb-95m,Nb-g reactions with 50-, 60-, and 70-MeV bremsstrahlung
SCIE
SCOPUS
- Title
- Measurement of isomeric yield ratios for Nb-93(gamma,4n)Nb-89m,Nb-g and Mo-nat(gamma,xn1p)Nb-95m,Nb-g reactions with 50-, 60-, and 70-MeV bremsstrahlung
- Authors
- Kim, KS; Rahman, MS; Lee, M; Kim, G; Pham, DK; Nguyen, VD; Cho, MH; Ko, IS; Namkung, W; Naik, H; Ro, TI
- Date Issued
- 2011-03
- Publisher
- SPRINGER
- Abstract
- We measured the isomeric yield ratios for the photonuclear reactions of Nb-93(gamma,4n)Nb-89m,Nb-g and Mo-nat(gamma,xnp)Nb-95m,Nb-g by using the activation method. The high-purity Nb-93 and Mo-nat metallic foils in disc shape were irradiated with uncollimated bremsstrahlung beams of 50-, 60-, and 70-MeV generated from an electron linear accelerator in Pohang Accelerator Laboratory. The induced activities in the irradiated foils were measured by the high-resolution gamma-ray spectrometry with a calibrated high-purity Germanium (HPGe) detector coupled to a PC-based 4 K multichannel analyzer. The reaction Nb-93(gamma,4n)Nb-89m,Nb-g was studied for the first time which has no comparable literature data. The result of Nb-95m,Nb-g isomeric pair was measured based on (gamma,p), (gamma,np), and (gamma,2np) reactions which is the first measurement at the intermediate energy region of 50-70-MeV with a Mo-nat target.
- Keywords
- Isomeric yield ratio; Photonuclear reaction; Nb-93(gamma,4n)Nb-89m,Nb-g; Mo-nat(gamma,xn1p)Nb-95m,Nb-g; Activation method; High-purity germanium detector; 50-, 60-, 70-MeV bremsstrahlung; CROSS-SECTION RATIOS; POHANG-NEUTRON-FACILITY; PHOTONUCLEAR REACTIONS; ACTIVATION TECHNIQUE; ENERGY-DEPENDENCE; MODEL; PAIR; CODE
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/24950
- DOI
- 10.1007/S10967-010-0839-3
- ISSN
- 0236-5731
- Article Type
- Article
- Citation
- JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY, vol. 287, no. 3, page. 869 - 877, 2011-03
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