Alpha-decay studies of the francium isotopes 198Fr and 199Fr nuclei
Uusitalo, J., Sarén, J., Juutinen, S., Leino, M., Eeckhaudt, S., Grahn, T., Greenlees, P., Jakobsson, U., Jones, P., Julin, R., Ketelhut, S., Leppänen, A.-P., Nyman, M., Pakarinen, J., Rahkila, P., Scholey, C., Semchenkov, A., Sorri, J., Steer, A., & Venhart, M. (2013). Alpha-decay studies of the francium isotopes 198Fr and 199Fr nuclei. Physical Review C, 87(6), Article 064304. https://doi.org/10.1103/PhysRevC.87.064304
Published in
Physical Review CAuthors
Date
2013Copyright
© 2013 American Physical Society. Published in this repository with the kind permission of the publisher.
Very neutron deficient francium isotopes have been produced in fusion evaporation reactions using 60Ni ions
on 141Pr targets. The gas-filled recoil separator RITU was employed to collect the fusion products and to separate
them from the scattered beam. The activities were implanted into a position sensitive silicon detector after
passing through a gas-counter system. The isotopes were identified using spatial and time correlations between
the implants and the decays. Two α-particle activities, with Eα = 7613(15) keV and T1/2 = (15+12
−5 ) ms and
Eα = 7684(15) keV and T1/2 = (16+13
−5 ) ms were identified in the new isotope 198Fr. In addition, the half-life and
α-particle energy of 199Fr were measured with improved precision. The measured decay properties deduced for 199Fr and 198Fr suggest that there is an onset of ground-state deformation at N = 112 in the Fr isotopes.
Publisher
American Physical SocietyISSN Search the Publication Forum
0556-2813Keywords
Publication in research information system
https://converis.jyu.fi/converis/portal/detail/Publication/23219084
Metadata
Show full item recordCollections
Related items
Showing items with similar title or keywords.
-
A spectroscopic study of low-lying states in neutron-deficient astatine and francium nuclei
Jakobsson, Ulrika (University of Jyväskylä, 2013) -
Characterizing the atomic mass surface beyond the proton drip line via {\alpha}-decay measurements of the {\pi}s1/2 ground state of 165Re and the {\pi}h11/2 isomer in 161Ta
Thornthwaite, A.; O’Donnell, D.; Page, Robert; Joss, David; Scholey, Catherine; Bianco, L.; Capponi, L.; Carroll, R.J.; Darby, Iain; Donosa, L.; Drummond, M.C.; Ertuğral, F.; Grahn, Tuomas; Greenlees, Paul; Hauschild, Karl; Herzan, Andrej; Jakobsson, Ulrika; Jones, Peter; Julin, Rauno; Juutinen, Sakari; Ketelhut, Steffen; Labiche, M.; Leino, Matti; Lopez-Martens, Araceli; Mullholland, K.; Nieminen, Päivi; Peura, Pauli; Rahkila, Panu; Rinta-Antila, Sami; Ruotsalainen, Panu; Sandzelius, Mikael; Sarén, Jan; Sayği, B.; Simpson, John; Sorri, Juha; Uusitalo, Juha (American Physical Society, 2012)The α-decay chains originating from the πs1/2 and πh11/2 states in 173Au have been investigated following fusion-evaporation reactions. Four generations of α radioactivities have been correlated with 173Aum leading to ... -
Mass Measurements of Proton-rich Nuclei with JYFLTRAP
Eronen, Tommi (Jagiellonian University, 2011)The Penning trap setup JYFLTRAP, connected to the IGISOL facility, has been extensively used for atomic mass measurements of exotic nuclei. On the proton rich side of the chart of nuclei mass measurements have mostly ... -
First determination of β-delayed multiple neutron emission beyond A = 100 through direct neutron measurement : The P2n value of 136Sb
Caballero-Folch, R.; Dillmann, I.; Agramunt, J.; Taín, J. L.; Algora, A.; Äystö, Juha; Calviño, F.; Canete, Laetitia; Cortès, G.; Domingo-Pardo, C.; Eronen, Tommi; Ganioglu, E.; Gelletly, W.; Gorelov, Dmitry; Guadilla, V.; Hakala, Jani; Jokinen, Ari; Kankainen, Anu; Kolhinen, Veli; Koponen, Jukka; Marta, M.; Mendoza, E.; Montaner-Pizá, A.; Moore, Iain; Nobs, C. R.; Orrigo, S. E. A.; Penttilä, Heikki; Pohjalainen, Ilkka; Reinikainen, Juuso; Riego, A.; Rinta-Antila, Sami; Rubio, B.; Salvador-Castiñeira, P.; Simutkin, Vasily; Tarifeño-Saldivia, A.; Tolosa-Delgado, A.; Voss, Annika (American Physical Society, 2018)Background: β-delayed multiple neutron emission has been observed for some nuclei with A≤100, being the Rb100 the heaviest β2n emitter measured to date. So far, only 25P2n values have been determined for the ≈300 nuclei ... -
Isovector and isoscalar spin-multipole giant resonances in the parent and daughter nuclei of double-β-decay triplets
Kauppinen, Elina; Suhonen, Jouni (American Physical Society, 2022)The strength distributions, including giant resonances, of isovector and isoscalar spin-multipole transitions in the commonly studied double-β-decay triplets are computed in the framework of the quasiparticle random-phase ...