Nuclear structure of Sb-109
- T. Ishii(,)
- JAERI, Tokai and
- Unlisted
- ,
- ,
- M. Ogawa(,)
- JAERI, Tokai and
- Unlisted
- M. Ishii()
- JAERI, Tokai and
- Unlisted
7 pages
Published in:
- Phys.Rev.C 49 (1994) 2982-2989
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Abstract: (APS)
This is the first report on nuclear structure of Sb109. Excited states up to Iπ=27/2+ and 35/2− have been established using the reaction Fe54(58Ni, 3p)109Sb and in-beam techniques. According to the particle(hole)-core coupling scheme these excited states were classified into five bands: three are based on the πd5/2, πg7/2, and πh11/2 states; the other two are the ΔI=1 collective bands built on the 17/2+ state at 2651 keV and the 23/2− state at 4487 keV. The 11/2+→9/2+ transition in the πg7/2 band possesses an E2/M1 mixing ratio δ>0, which suggests admixing of the πg9/2 hole state. Positive mixing ratios observed in the collective bands indicate a prolate deformation due to the (πg9/2)−1 core excitation. In the πh11/2 band, B(M1;23/2−→21/2−) was measured to be 0.040(3) W.u. Furthermore the 27/2−→25/2− transition was too weak for a proton M1 transition. These transitions are retarded by the νh11/2 configurations mixed in the involved states.- 27.60.+j
- 21.60.Cs
- 23.20.-g
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