Rotational bands in Lu-169 previously observed via (p, 3n) and (alpha,
4n) reactions were extended by 8-14 units of angular momentum using t
he Sm-154(F-19, 4n) reaction and the Nordball detector array. By analy
sis of gammagamma coincidence relations and gamma-ray angular correlat
ions we have established the [541]1/2-, alpha = +1/2 band to 57/2HBAR,
the [514]9/2- bands to 47/2HBAR, the [404]7/2+ bands to 53/2HBAR and
the [411]1/2+, alpha = 1/2 to 47/2 (55/2) h. The bands belonging to th
e [411]1/2+ and [402]5/2+ configurations with alpha = +1/2 appear to b
e rather mixed in the low spin region. One of these bands is establish
ed to 45/2 (49/2) units of spin. The transitions interconnecting the s
ignature partners, in the bands based on the [514]9/2-and [404]7/2+ Ni
lsson orbitals, as well as in and between the strongly mixed [411]1/2 and [402]5/2+ bands are compared to particle-rotor model calculations
. By DSAM analysis, lifetimes and thereby transition quadrupole moment
s for the band built on the configuration h9/2[541]1/2-, alpha = +1/2
could be extracted. The abnormal alignment pattern at the vi13/2 cross
ing for the h9/2[541]1/2- band is analysed in terms of a difference in
both deformation and neutron pairing compared to the other less polar
izing configurations. The influence of octupole modes on the strength
of observed [411]1/2+ double-line arrow pointing right [541]1/2- E1 tr
ansitions as well as on observed spin-flip, [514]9/2- double-line arro
w pointing right [404]7/2+, E1 transitions is investigated theoretical
ly and compared to the experimental data.