https://doi.org/10.1140/epja/i2016-16047-8
Regular Article - Experimental Physics
Measurement of isomeric ratios for 89g,mZr, 91g,mMo, and 97g,mNb in the bremsstrahlung end-point energies of 16 and 45-70 MeV
1
Radiochemistry Division, Bhabha Atomic Research Centre, 400085, Mumbai, India
2
Department of Physics, Kyungpook National University, 41566, Daegu, Republic of Korea
3
Institute of Radiation Physics, 01328, Dresden, Germany
4
Nuclear Data Center, Korea Atomic Energy Research Institute, 34057, Dajeon, Republic of Korea
5
Division of Advanced Nuclear Engineering, Pohang University of Science and Technology, 37673, Pohang, Republic of Korea
* e-mail: gnkim@knu.ac.kr
Received:
2
October
2015
Revised:
28
December
2015
Accepted:
20
January
2016
Published online:
11
March
2016
The independent isomeric yield ratios of 89g,mZr from the natZr(,xn) reactions and those of 91g, mMo and 97g,mNb from the natMo(
,x) reactions with the bremsstrahlung end-point energy of 45-70 MeV were determined by an off-line
-ray spectrometric technique using the 100 MeV electron linac at the Pohang Accelerator Laboratory, Korea. The isomeric yield ratios of 89g,mZr and 97g,mNb from the natZr(
, xn) and natMo(
,x) reactions at the bremsstrahlung end-point energy of 16MeV were also determined by the same technique using the 20MeV electron linac at Helmholtz-Zentrum Dresden-Rossendorf, Germany. The measured isomeric yield ratios of 89g,mZr, 91g,mMo, and 97g,mNb were compared with literature data to examine the role of the Giant Dipole Resonance (GDR). The isomeric yield ratios of the 89g,mZr, 91g,mMo, and 97g,mNb from the above reactions were also calculated by using the computer code TALYS 1.6 and compared with the experimental data to examine the validity of the theoretical model for independent isomeric yield ratio calculations.
© SIF, Springer-Verlag Berlin Heidelberg, 2016