Signature of 0+ excited state and shape coexistence in 94Kr through 93Kr(d,p)94Kr reaction
A measurement of the excitation spectrum of 94Kr via one-neutron transfer to the ground state of 93Kr using the 93Kr(d,p)94Kr reaction at 8A MeV, observing the outgoing protons, performed with the IRIS facility at TRIUMF is reported. Two states in 94Kr, at 1.50±0.14 MeV and 2.20±0.14 MeV, were obser...
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| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2025-03-01
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| Series: | Physics Letters B |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0370269325001121 |
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| Summary: | A measurement of the excitation spectrum of 94Kr via one-neutron transfer to the ground state of 93Kr using the 93Kr(d,p)94Kr reaction at 8A MeV, observing the outgoing protons, performed with the IRIS facility at TRIUMF is reported. Two states in 94Kr, at 1.50±0.14 MeV and 2.20±0.14 MeV, were observed. An adiabatic-wave approximation analysis of the differential cross sections leads us to identify the lower energy state as being populated with neutron transfer to the 3s1/2 orbital. This leads to the first observation of the lowest 0+ excited state in 94Kr, hence signaling shape co-existence. Theoretical calculations performed within the in-medium similarity renormalization group framework are presented that also show the existence of a low-energy 0+ state, aligning qualitatively with the observation. |
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| ISSN: | 0370-2693 |