Fine structure in the alpha decay of 224 U
Creators
- Lopez-Martens, A.1
- Hauschild, K.1
- Rezynkina, K.1
- Dorvaux, O.2
- Gall, B.2
- Dechery, F.2
- Faure, H.2
- Yeremin, A.V.3
- Chelnokov, M.L.3
- Chepigin, V.I.3
- Isaev, A.V.3
- Izosimov, I.N.3
- Katrasev, D.E.3
- Kuznetsov, A.N.3
- Kuznetsova, A.A.3
- Malyshev, O.N.3
- Popeko, A.G.3
- Sokol, E.A.3
- Svirikhin, A.I.3
- Piot, J.4
- Rubert, J.5, 2
- 1. CNRS-IN2P3, CSNSM, Universite Paris Sud, Orsay (France)
- 2. CNRS-IN2P3, IPHC, Universite de Strasbourg, Strasbourg (France)
- 3. JINR, FLNR, Dubna (Russian Federation)
- 4. CNRS-IN2P3, GANIL, CEA-DSM, Caen (France)
- 5. CNRS-IN2P3, LPSC, Universite Grenoble-Alpes, Grenoble (France)
Description
224U nuclei were populated in fusion-evaporation reactions using a 206Pb target and an intense 22Ne beam. Fusion-evaporation residues were separated by the new separator SHELS at the FLNR, Dubna and implanted into a large-area double-sided silicon strip detector. Position- and time-correlated alpha decays were used to identify evaporation residues. A new α -decay line at 8095(11) keV was observed in this work and assigned as the decay from 224U to the first excited 2+ in the daughter nucleus 220Th. Coincident photons were also observed allowing to unambiguously determine the excitation energy of the first excited 2+ state in 220Th to be 386.5(1) keV and not 373.3(1)keV as previously reported. The half-life of 224U was measured to be 396(17)μs. (orig.)
Availability note (English)
Available from http://dx.doi.org/10.1140/epja/i2014-14132-8Additional details
Identifiers
Publishing Information
- Journal Title
- European Physical Journal. A
- Journal Volume
- 50
- Journal Issue
- 8
- Journal Page Range
- p. 1-4
- ISSN
- 1434-6001
INIS
- Country of Publication
- Germany
- Country of Input or Organization
- Germany
- INIS RN
- 45097757
- Subject category
- S73: NUCLEAR PHYSICS AND RADIATION PHYSICS;
- Resource subtype / Literary indicator
- Numerical Data
- Descriptors DEI
- ALPHA DECAY; ALPHA SPECTRA; ENERGY SPECTRA; EXPERIMENTAL DATA; HALF-LIFE; ROTATIONAL STATES; THORIUM 220; URANIUM 224
- Descriptors DEC
- ACTINIDE NUCLEI; ALPHA DECAY RADIOISOTOPES; DATA; DECAY; ENERGY LEVELS; EVEN-EVEN NUCLEI; EXCITED STATES; HEAVY NUCLEI; INFORMATION; ISOTOPES; MICROSECONDS LIVING RADIOISOTOPES; NUCLEAR DECAY; NUCLEI; NUMERICAL DATA; RADIOISOTOPES; SPECTRA; THORIUM ISOTOPES; URANIUM ISOTOPES