Regular Article - Experimental Physics
Thermal-neutron cross sections and resonance integrals of 138Ba and 141Pr using Am-Be neutron source
Manipal Centre for Natural Sciences, Manipal University, 576104, Karnataka, India
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Accepted: 26 July 2016
Published online: 12 September 2016
The thermal-neutron capture cross sections and resonance integrals of 138Ba(n,)139Ba and 141Pr(n,)142Pr were measured by activation method using an isotopic Am-Be neutron source. The estimations were with respect to that of 55Mn(n,)56Mn and 197Au(n,)198Au reference monitors. The measured thermal-capture cross section of 138 Ba with respect to 55 Mn is 0.410±0.023 b and with respect to 197 Au is 0.386±0.019 b. The measured thermal-capture cross section of 141 Pr with respect to 55 Mn is 11.36±1.29 b and with respect to 197 Au is 10.43±1.14 b. The resonance integrals for 138 Ba are 0.380±0.033 b (55 Mn) and 0.364±0.027 b (197 Au) and for 141 Pr are 21.05±2.88 b (55 Mn) and 15.27±1.87 b (197 Au). The comparison between the present measurements and various reported values are discussed. The cross sections corresponding to the selected isotopes are measured using an Am-Be source facility for the first time.
© SIF, Springer-Verlag Berlin Heidelberg, 2016