Nuclear spectroscopy above isomers in 67148Ho81 and 67149Ho82 nuclei: Search for core-excited states in 149Ho
Creators
- Kownacki, J.1
- Napiorkowski, P. J.1
- Zielinska, M.1
- Kordyasz, A.1
- Srebrny, J.1
- Droste, Ch.2
- Morek, T.2
- Grodner, E.2
- Ruchowska, E.3
- Korman, A.3
- Czarnacki, W.3
- Kisielinski, M.3, 1
- Kowalczyk, M.2, 1
- Wrzosek-Lipska, K.2, 1
- Hadynska-KlePk, K.2, 1
- Mierzejewski, J.2, 1
- Lieder, R. M.4
- Perkowski, J.5
- Andrzejewski, J.5
- Krol, A.5
- 1. Heavy Ion Laboratory, University of Warsaw, Warsaw (Poland)
- 2. Nuclear Physics Division, Institute of Experimental Physics, University of Warsaw, Warsaw (Poland)
- 3. The Andrzej Soltan Institute for Nuclear Studies, Swierk (Poland)
- 4. Institut fuer Kernphysik Forschungszentrum Juelich, Juelich (Germany)
- 5. Faculty of Physics, University of Lodz, Lodz (Poland)
Description
The excited states of 148Ho and 149Ho isotopes are studied using γ-ray and electron spectroscopy in off-beam and in-beam modes following 112,114Sn(40Ar,xnyp) reactions. Experiments include measurements of single γ-rays and conversion electron spectra as well as γ-γ, electron-γ, γ-t, and γ-γ-t coincidences with the use of the OSIRIS-II 12-HPGe array and conversion electron spectrometer. Based on the present results, the level schemes of 148Ho and 149Ho are revised and significantly extended, up to about 4 and 5 MeV of excitation energy, respectively. Spin and parity of 5- are assigned to the 9.59-s isomer in 148Ho based on conversion electron results. Previously unobserved γ rays feeding the 10+ isomer in 148Ho and the 27/2- isomer in 149Ho nuclei are proposed. Shell-model calculations are performed. Possible core-excited states in 149Ho are discussed.
Additional details
Identifiers
Publishing Information
- Journal Title
- Physical Review. C, Nuclear Physics
- Journal Volume
- 81
- Journal Issue
- 4
- Journal Page Range
- p. 044305-044305.11
- ISSN
- 0556-2813
- CODEN
- PRVCAN
INIS
- Country of Publication
- United States
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 41117657
- Subject category
- S73: NUCLEAR PHYSICS AND RADIATION PHYSICS;
- Descriptors DEI
- ARGON 40; BEAMS; ELECTRON SPECTRA; ELECTRON SPECTROMETERS; ELECTRON SPECTROSCOPY; ELECTRONS; EXCITATION; EXCITED STATES; FEEDING; GAMMA RADIATION; GAMMA SPECTROSCOPY; HOLMIUM 148; HOLMIUM 149; ISOMERS; MEV RANGE 01-10; PARITY; SHELL MODELS; SPIN; TIN 112 TARGET; TIN 114; TIN 114 TARGET
- Descriptors DEC
- ANGULAR MOMENTUM; ARGON ISOTOPES; BETA DECAY RADIOISOTOPES; BETA-PLUS DECAY RADIOISOTOPES; ELECTROMAGNETIC RADIATION; ELECTRON CAPTURE RADIOISOTOPES; ELEMENTARY PARTICLES; ENERGY LEVELS; ENERGY RANGE; ENERGY-LEVEL TRANSITIONS; EVEN-EVEN NUCLEI; FERMIONS; HOLMIUM ISOTOPES; INTERMEDIATE MASS NUCLEI; IONIZING RADIATIONS; ISOMERIC TRANSITION ISOTOPES; ISOTOPES; LEPTONS; LIGHT NUCLEI; MATHEMATICAL MODELS; MEASURING INSTRUMENTS; MEV RANGE; MILLISECONDS LIVING RADIOISOTOPES; NUCLEAR MODELS; NUCLEI; ODD-EVEN NUCLEI; ODD-ODD NUCLEI; PARTICLE PROPERTIES; RADIATIONS; RADIOISOTOPES; RARE EARTH NUCLEI; SECONDS LIVING RADIOISOTOPES; SPECTRA; SPECTROMETERS; SPECTROSCOPY; STABLE ISOTOPES; TARGETS; TIN ISOTOPES
Optional Information
- Notes
- (c) 2010 The American Physical Society