| Autor: |
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., Romero, J., Ruotsalainen, P., Sandzelius, M., Sarén, J., Tolosa-Delgado, A., Uusitalo, J., Zimba, G. |
| Rok vydání: |
2021 |
| Předmět: |
|
| Zdroj: |
Physical review letters. 128(11) |
| ISSN: |
1079-7114 |
| Popis: |
Using the fusion-evaporation reaction ^{96}Ru(^{58}Ni,p4n)^{149}Lu and the MARA vacuum-mode recoil separator, a new proton-emitting isotope ^{149}Lu 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_{-100}^{+170} ns for a ground-state proton emitter. The decay rate is consistent with l_{p}=5 emission, suggesting a dominant πh_{11/2} component for the wave function of the proton-emitting state. Through nonadiabatic quasiparticle calculations it was concluded that ^{149}Lu is the most oblate deformed proton emitter observed to date. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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