BARC/PUB/2015/1386

 
 

89Y(γ,xn) reaction cross-section measurements with bremsstrahlung end-point energies of 50–65 MeV

 
     
 
Author(s)

Zaman, M.; Kim, G.; Kim, K.; Naik, H.; and others
(RCD)

Source

Journal of the Korean Physical Society, 2015. Vol. 67 (8): pp. 1482-1489

ABSTRACT

The cross-sections for 89Y(γ,n)88Y, 89Y(γ,2n)87Y, 89Y(γ,3n)86Y, and 89Y(γ,4n)85Y reactions for the end-point bremsstrahlung energies of 50 and 65 MeV were determined by using an activation and an off-line γ-ray spectrometric techniques with the electron linear accelerator at the Pohang Accelerator laboratory (PAL), Korea. The photon-induced reaction cross-sections of 89Y as functions of the photon energy were taken from the TENDL-2013 nuclear data library based on the TALYS 1.6 program. For comparison with our experimental results, the flux-weighted average cross-sections for the existing experimental data with mono-energetic photons and the theoretical values from TENDL-2013 were obtained. The reaction cross-section values measured at different end-point bremsstrahlung energies from the present work and from literature are found to be in good agreement with the theoretical values. The 89Y(, xn, x = 1 − 4) reaction cross-sections were observed to increase sharply from their threshold values to certain energies, until the next reaction channel opens, after which it remained constant for a while until the next reaction channel opened. Then, it decrease slowly with increasing of end-point bremsstrahlung energy due to the opening of different reaction channels.

 
 
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