https://doi.org/10.1140/epja/i2016-16195-9
Regular Article - Experimental Physics
Photo-neutron reaction cross-sections for natMo in the bremsstrahlung end-point energies of 12-16 and 45-70 MeV
1
Radiochemistry Division, Bhabha Atomic Research Centre, 400085, Mumbai, India
2
Department of Physics, Kyungpook National University, 702-701, Daegu, Republic of Korea
3
Division of Physical and Chemical Sciences, Department of Nuclear Sciences and applications, IAEA, Vienna International Centre, P.O. Box 100, A-1400, Vienna, Austria
4
Institute of Radiation Physics, Helmholtz-Zentrum Dresden-Rossendorf, 01328, Dresden, Germany
5
Division of Advanced Nuclear Engineering, Pohang University of Science and Technology, 790-784, Pohang, Republic of Korea
* e-mail: naikhbarc@yahoo.com
Received:
27
March
2016
Revised:
30
May
2016
Accepted:
10
June
2016
Published online:
21
July
2016
The natMo(,xn)90, 91, 99Mo reaction cross-sections were experimentally determined for the bremsstrahlung end-point energies of 12, 14, 16, 45, 50, 55, 60 and 70MeV by activation and off-line
-ray spectrometric technique and using the 20MeV electron linac (ELBE) at the Helmholtz-Zentrum Dresden-Rossendorf (HZDR), Dresden, Germany, and the 100MeV electron linac at the Pohang Accelerator Laboratory (PAL), Pohang, Korea. The natMo(
,xn)88, 89, 90, 91, 99Mo reaction cross-sections as a function of photon energy were also calculated using the computer code TALYS 1.6. The flux-weighted average cross-sections were obtained from the literature data and the calculated values of TALYS based on mono-energetic photons and are found to be in general agreement with the present results. The flux-weighted average experimental and theoretical cross-sections for the natMo(
,xn)88, 89, 90, 91, 99Mo reactions increase with the bremsstrahlung end-point energy, which indicates the role of excitation energy. After a certain energy, the individual natMo(
,xn) reaction cross-sections decrease with the increase of bremsstrahlung energy due to opening of other reactions, which indicates sharing of energy in different reaction channels. The 100Mo(
, n) reaction cross-section is important for the production of 99Mo , which is a probable alternative to the 98Mo(n,
) and 235U(n, f ) reactions.
© SIF, Springer-Verlag Berlin Heidelberg, 2016