Chiral Vibrations and Collective Bands in 104 Mo
Department, Center, or Institute
Physics
Presentation Format
Individual Oral Presentation
Presentation Type
Research
Description
High spin states of the neutron-rich 104Mo nucleus which is known to be triaxial have been reinvestigated by analyzing the γ-rays in the spontaneous fission of 252Cf with Gammasphere. Both γ-γ-γ and γ-γ-γ-γ coincidence data were analyzed. A new ∆I=1 band has been discovered. The new band is proposed to have a tentative 5− band head and form a class of chiral doublets with another 4− band previously found by our group [1]. Angular correlation measurements have been performed to determine spin and parity of the 4− chiral band head. The energies of the two sets of chiral bands are very similar to the chiral bands observed in 106Mo [2], e.g. the two 5− levels in 104Mo are at 2211.9 and 2276.8 keV with ∆E=65 keV and in 106Mo, 1952.4 and 2090.6 keV with ∆E=138 keV [2]. Now at every spin 5−, 6−, 7−, 8−, the separation energies of the same spin states are about a factor of two smaller than in 106Mo. This indicates even better agreement with expectations for two sets of chiral bands.
Department Organized Oral Session Title
Multi-disciplinary Research
Moderator/Professor
Andrea Wright
Session Length
80 minutes
Session Number
4
Start Date and Time
4-4-2017 2:30 PM
Location
Furman Hall 111
Recommended Citation
Musangu, Brooks, "Chiral Vibrations and Collective Bands in 104 Mo" (2017). Furman Engaged!. 418.
https://scholarexchange.furman.edu/furmanengaged/2017/all/418
Chiral Vibrations and Collective Bands in 104 Mo
Furman Hall 111
High spin states of the neutron-rich 104Mo nucleus which is known to be triaxial have been reinvestigated by analyzing the γ-rays in the spontaneous fission of 252Cf with Gammasphere. Both γ-γ-γ and γ-γ-γ-γ coincidence data were analyzed. A new ∆I=1 band has been discovered. The new band is proposed to have a tentative 5− band head and form a class of chiral doublets with another 4− band previously found by our group [1]. Angular correlation measurements have been performed to determine spin and parity of the 4− chiral band head. The energies of the two sets of chiral bands are very similar to the chiral bands observed in 106Mo [2], e.g. the two 5− levels in 104Mo are at 2211.9 and 2276.8 keV with ∆E=65 keV and in 106Mo, 1952.4 and 2090.6 keV with ∆E=138 keV [2]. Now at every spin 5−, 6−, 7−, 8−, the separation energies of the same spin states are about a factor of two smaller than in 106Mo. This indicates even better agreement with expectations for two sets of chiral bands.