Samark-Roth, A, Sarmiento, LG, Rudolph, D, Ljungberg, J, Carlsson, BG, Fahlander, C, Forsberg, U, Golubev, P, Ragnarsson, I, Ackermann, D et al (show 38 more authors)
(2018)
Low-lying states in <SUP>219</SUP>Ra and <SUP>215</SUP>Rn: Sampling microsecond α-decaying nuclei.
PHYSICAL REVIEW C, 98 (4).
044307-.
Abstract
Short-lived α-decaying nuclei "northeast" of Pb208 in the chart of nuclides were studied using the reaction Ca48+Am243 with the decay station TASISpec at TASCA, GSI Darmstadt. Decay energies and times from pile-up events were extracted with a tailor-made pulse-shape analysis routine and specific α-decay chains were identified in a correlation analysis. Decay chains starting with the even-even Ra220 and its odd-A neighbors, Fr219, and Ra221,219, with a focus on the Ra219→Rn215 decay, were studied by means of α-γ spectroscopy. A revised α-decay scheme of Ra219 is proposed, including a new decay branch from a previously not considered isomeric state at 17 keV excitation energy. Conclusions on nuclear structure are drawn from the experimental data, aided by Geant4 simulations and a discussion on theoretical calculations.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | 5106 Nuclear and Plasma Physics, 5110 Synchrotrons and Accelerators, 51 Physical Sciences |
| Depositing User: | Symplectic Admin |
| Date Deposited: | 07 Jan 2019 16:15 |
| Last Modified: | 21 Jun 2024 03:36 |
| DOI: | 10.1103/PhysRevC.98.044307 |
| Open Access URL: | http://portal.research.lu.se/portal/files/53377004... |
| Related URLs: | |
| URI: | https://livrepository.liverpool.ac.uk/id/eprint/3030164 |
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