Abstract
Excited states in198,199Po have been studied by in-beamγ-ray spectroscopy. These nuclei were produced in the 4n and 5n reaction channels for 115 MeV20Ne on183W-targets. Multipolarities and mixing ratios ofγ-transitions were determined from DCO-ratios, leading to spin/parity assignments. In198Po,γ-cascades have been observed above several excited levels that are similar to the vibration-like structure built on the ground state. In199Po, the coupling of the oddi13/2 neutron seems to favor the spherical shape of the even core; no levels resembling the intruder states of the even nuclei are found. A semi-quantitative evaluation of the cross-sections for nuclei produced in fission and multi-particle transfer is presented.
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Senior U.S. Scientist Humboldt Fellow on leave from SUNY-Stony Brook, NY, USA
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Lach, M., Waring, M., Alber, D. et al. Spectroscopy of198,199Po. Z. Physik A - Hadrons and Nuclei 350, 207–214 (1994). https://doi.org/10.1007/BF01289584
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DOI: https://doi.org/10.1007/BF01289584