The bandhead of most chiral bands are isomers with a large Weisskopf hindrance factor. Such isomers are proposed as a type of K isomer. From the data available for the mass region A ∽ 80, 100, 130, and 190, it has been observed that the low value of reduced hindrance factors could be indicative of triaxial shape and orthogonally coupling of the valence nucleon angular momentum at the chiral bandhead.

The bandhead of most chiral bands are isomers with a large Weisskopf hindrance factor. Such isomers are proposed as a type of K isomer. From the data available for the mass region A ∽ 80, 100, 130, and 190, it has been observed that the low value of reduced hindrance factors could be indicative of triaxial shape and orthogonally coupling of the valence nucleon angular momentum at the chiral bandhead.