Abstrakt
The nucleus Lu-177 is characteristic by an unusually high value of the thermal-neutron capturing state spin, J = 13/2, and by distinct low-energy rotational bands built on the 7/2(+) ground state and the 9/2(-) level at 150 keV. The gamma cascades connecting the capturing state with the members of these bands carry unique information about the role of identical M1 scissors-mode resonances, built according to Brink hypothesis assumingly on each energy level, even in conditions of fast nuclear rotation.
With this motivation we measured a set of spectra of two-step gamma cascades following the thermal neutron capture in Lu-176. The measurement was performed at neutron beam of the LWR-15 Reactor in.
Rez. From the analysis of these spectra the common parameters of the scissors resonances were deduced.
The obtained results are discussed.