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論文

Experimental level scheme of $$^{78}$$Cu

Pedersen, L. G.*; Sahin, E.*; G$"o$rgen, A.*; Bello Garrote, F. L.*; Orlandi, R.; 他61名*

Acta Physica Polonica B; Proceedings Supplement, 16(4), p.4-A14_1 - 4-A14_6, 2023/08

https://doi.org/10.5506/APhysPolBSupp.16.4-A14
 被引用回数：0 パーセンタイル：0.00(Physics, Multidisciplinary)

Excited states in $$^{78}$$Cu were observed for the first time following the $$beta$$ decay of $$^{78}$$Ni created by in-flight fission of $$^{238}$$U. Based on the coincidences with the observed $$gamma$$-ray transitions, a level scheme comprising eight excited states was constructed, with tentative spin assignments for 5 of them. In addition to the $$gamma$$-decaying states, an isomeric state with a lifetime of 3.8(4) ms was also found to decay by internal conversion.

論文

First spectroscopic study of odd-odd $$^{78}$$Cu

Pedersen, L. G.*; Sahin, E.*; G$"o$rgen, A.*; Bello Garrote, F. L.*; 角田 佑介*; 大塚 孝治*; 新倉 潤*; Orlandi, R.; 他59名*

Physical Review C, 107(4), p.044301_1 - 044301_10, 2023/04

https://doi.org/10.1103/PhysRevC.107.044301
 被引用回数：3 パーセンタイル：45.98(Physics, Nuclear)

Nuclei in the vicinity of $$^{78}$$Ni ($$Z$$=28, $$N$$=50) are important benchmarks to study the evolution of shell structure far from stability. Excited states in $$^{78}$$Cu were observed for the first time following the $$beta$$-decay of $$^{78}$$Ni, which was produced by in-flight fission of $$^{238}$$U. Using $$gamma$$-ray coincidences, a level scheme comprising eight excited states was built. Using the observed $$beta$$ feeding and the $$gamma$$-decay properties of the excited states, spin was tentatively assigned to 5 new states. In addition to the $$gamma$$-decaying states, an isomeric state with a lifetime of 3.8(4) ms was found to decay by internal conversion. By comparing the results with large scale shell model calculations, quantitative information about the proton-neutron interaction outside the doubly magic $$^{78}$$Ni core was obtained.

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