BARC/PUB/2019/0164

 
 

Determination of 59Ni(n, x p) reaction cross sections using surrogate reactions

 
     
 
Author(s)

Pandey, J.; Pandey, B.; Pal, A.; Suryanarayana, S. V.; Santra, S.; Nayak, B. K.; Mirgule, E. T.; Saxena, A.; Chattopadhyay, D.; Kundu, A.; Desai, V. V.; Parihari, A.; Mohanto, G.; Sarkar, D.; Rout, P. C.; Srinivasan, B.; Mahata, K.; Roy, B. J.; De, S.; Agrawal, H. M.
(NPD)

Source

Physical Review-C, 2019. Vol. 99: Article no. 014611

ABSTRACT

The 59Ni(n, xp) reaction cross sections have been measured following the surrogate reaction ratio method in the equivalent neutron energy range of 11.9–15.8 MeV by populating the compound nucleus 60Ni∗ through transfer reaction 56Fe(6Li, d) at Elab = 35.9 MeV. The 59Co(6Li, α)61Ni∗ transfer reaction at Elab = 40.5 MeV has been used as the reference reaction which is the surrogate of 60Ni(n, xp) reaction populating the compound nucleus 61Ni∗. The proton decay probabilities have been determined by measuring evaporated protons at backward angles in coincidence with projectile like fragments (PLFs, either d or α) detected around grazing angles. The cross sections for the reference reaction 60Ni(n, xp) are taken from JENDL-4.0 library, which closely reproduce the available experimental data. The cross sections for the desired 59Ni(n, xp) reaction so obtained compare well with the nuclear-reactions-model code TALYS-1.8 using microscopic level densities. The present experimental data are consistent with the evaluated data library of ROSFOND-2015 but not with TENDL-2015 and ENDF/B-VIII, indicating the need of new evaluations for this reaction of importance to fusion technology.

 
 
SIRD Digital E-Sangrahay