Introduction The photoneutron cross sections of wolfram’s isotopes up to 10 MeV are very important from the view point of reactor engineering field in the con
利用不可约张量基的概念和不可约张量算符的性质,给出了O(4)O(3)约化因子(n1n2)(12±12的代数表达式,同时也给出了O(4)Racah系数1212(n1n2)12±12,12±12(n1n2)1和(n1n2)12±121的代数表达式
By using the concept of irreduci