In an odd-A nucleus,the two E2 transition sequences in a rotational band can be classified by the favored signature αf=1/2(-1)j-1/2 and unfavored signature αuf=1/2(-1)j+1/2,respectively,where the angular momentum of the sub-shell associated with the odd nucleon is expressed by j. The signature splitting is defined as the difference in energies at a given rotational frequency for the pair of signature partners. The favored signature branch is usually lower In an odd-A nucleus, the two E2 transition sequences in a rotational band can be classified by the favored signature αf = 1/2 (-1) j-1/2 and unfavored signature αuf = 1/2 (-1) j + 1/2, respectively, where the angular momentum of the sub-shell associated with the odd nucleon is expressed by j. The signature splitting is defined as the difference in energies at a given rotational frequency for the pair of signature partners. signature branch is usually lower