Neutron Activation Cross Sections at 14.8 MeV for Rubidium, Strontium, Zirconium, and Niobium

L. Husain; A. Bari; P. K. Kuroda

doi:10.1103/PhysRevC.1.1233

Abstract

The activation cross sections for 18 ( $n, p$ ), ( $n, α$ ), and ( $n, 2 n$ ) reactions have been measured with 14.8-MeV neutrons. The radioactivity measurements were carried out with a Ge(Li) detector. The cross sections measured, in millibarns, are ${}^{27}{Al} (n, p) {}^{27}{Mg}$ , 73±5; ${}^{85}{Rb} (n, 2 n) {}^{84 m}{Rb}$ , 714±50; ${}^{85}{Rb} (n, 2 n) {}^{84 g}{Rb}$ , 621±75; ${}^{85}{Rb} (n, p) {}^{85 m}{Kr}$ , 6±1; ${}^{87}{Rb} (n, 2 n) {}^{86 m}{Rb}$ , 584±40; ${}^{87}{Rb} (n, 2 n) {}^{86 g}{Rb}$ , 833±60; ${}^{87}{Rb} (n, p) {}^{87}{Kr}$ , 7±1; ${}^{84}{Sr} (n, 2 n) {}^{83}{Sr}$ , 395±75; ${}^{86}{Sr} (n, 2 n) {}^{85 m}{Sr}$ , 360±30; ${}^{86}{Sr} (n, p) {}^{86 m}{Rb}$ , 9±1; ${}^{88}{Sr} (n, 2 n) {}^{87 m}{Sr}$ , 344±30; ${}^{88}{Sr} (n, p) {}^{88}{Rb}$ , 20±2; ${}^{90}{Zr} (n, 2 n) {}^{89 m}{Zr}$ , 143±15; ${}^{90}{Zr} (n, 2 n) {}^{89 g}{Zr}$ , 342±25; ${}^{90}{Zr} (n, p) {}^{90 m}Y$ , 13±1; ${}^{90}{Zr} (n, α) {}^{87 m}{Sr}$ , 4.6±0.5; ${}^{93}{Nb} (n, 2 n) {}^{92 m}{Nb}$ , 455±25; and ${}^{93}{Nb} (n, α) {}^{90 m}Y$ , 5.8±0.5. The measured cross sectons are compared with those calculated by evaporation theory. The ( $n, 2 n$ ) measured cross sections agree well with the calculated values but the agreement between calculated and measured values for ( $n, p$ ) reactions is poor.

Received 15 October 1969

DOI:https://doi.org/10.1103/PhysRevC.1.1233

Physical Review C

covering nuclear physics