Collective Bands in Mo, Ru, and pd Nuclei and Chiral Bands in 106Mo

Gamma-vibrational bands are extended to 14⁺ or 17⁺ in ^104,106Mo, ^108,110,112Ru, and ^112,114,116Pd. Quite different staggering patterns are observed from the odd spin member pushed up relative to the even member and visa-versa. The one- and two-phonon γ-vibrational bands in ^104,106Mo have nearly identical γ energies. A β-vibrational band is identified in ¹⁰⁶Mo. Several two quasi-particle bands are found in ^104,106Mo with moments of inertia essentially constant near the rigid body value. The first evidence for chiral doublet bands is found in an even-even nucleus based on a two quasi-neutron configuration with the ν g_7/2 orbital nearly filled and the ν h_11/2 one just filling.