A1 Journal article (refereed)
Nanosecond-Scale Proton Emission from Strongly Oblate-Deformed 149Lu (2022)


Auranen, K., Briscoe, A. D., Ferreira, L. S., Grahn, T., Greenlees, P. T., Herzáň, A., Illana, A., Joss, D. T., Joukainen, H., Julin, R., Jutila, H., Leino, M., Louko, J., Luoma, M., Maglione, E., Ojala, J., Page, R. D., Pakarinen, J., Rahkila, P., . . . Zimba, G. (2022). Nanosecond-Scale Proton Emission from Strongly Oblate-Deformed 149Lu. Physical Review Letters, 128(11), Article 112501. https://doi.org/10.1103/PhysRevLett.128.112501


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Publication details

All authors or editorsAuranen, K.; Briscoe, A. D.; Ferreira, L. S.; Grahn, T.; Greenlees, P. T.; Herzáň, A.; Illana, A.; Joss, D. T.; Joukainen, H.; Julin, R.; et al.

Journal or seriesPhysical Review Letters

ISSN0031-9007

eISSN1079-7114

Publication year2022

Publication date16/03/2022

Volume128

Issue number11

Article number112501

PublisherAmerican Physical Society (APS)

Publication countryUnited States

Publication languageEnglish

DOIhttps://doi.org/10.1103/PhysRevLett.128.112501

Publication open accessNot open

Publication channel open access

Publication is parallel published (JYX)https://jyx.jyu.fi/handle/123456789/81624


Abstract

Using the fusion-evaporation reaction 96Ru(58Ni,p4n)149Lu and the MARA vacuum-mode recoil separator, a new proton-emitting isotope 149Lu has been identified. The measured decay Q value of 1920(20) keV is the highest measured for a ground-state proton decay, and it naturally leads to the shortest directly measured half-life of 450+170−100 ns for a ground-state proton emitter. The decay rate is consistent with lp=5 emission, suggesting a dominant πh11/2 component for the wave function of the proton-emitting state. Through nonadiabatic quasiparticle calculations it was concluded that 149Lu is the most oblate deformed proton emitter observed to date.


Keywordsnuclear physicsemission (physics)protons


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Ministry reportingYes

Reporting Year2022

JUFO rating3


Last updated on 2024-10-03 at 18:16