Nanosecond-Scale Proton Emission from Strongly Oblate-Deformed 149Lu
Finna-arvio
Nanosecond-Scale Proton Emission from Strongly Oblate-Deformed 149Lu
PhysRevLett.128.112501.pdf
(Jyväskylän yliopisto - JYX)
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.
Tallennettuna:
Kieli |
englanti |
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Sarja | Physical Review Letters, 11 |
Aiheet | |
ISSN |
0031-9007 |