Home > Decay of neutron-rich Mn nuclides and deformation of heavy Fe isotopes |
Article | |
Report number | nucl-ex/9812008 |
Title | Decay of neutron-rich Mn nuclides and deformation of heavy Fe isotopes |
Related title | RING IMAGING CERENKOV |
Author(s) |
Hannawald, M. (Mainz U., Inst. Kernchem.) ; Kautzsch, T. (Mainz U., Inst. Kernchem.) ; Wohr, A. (Leuven U.) ; Walters, W.B. (Maryland U.) ; Kratz, K.L. (Mainz U., Inst. Kernchem.) ; Fedoseyev, V.N. (Troitsk, Inst. Spectroscopy) ; Mishin, V.I. (Troitsk, Inst. Spectroscopy) ; Bohmer, W. (Mainz U., Inst. Kernchem.) ; Pfeiffer, B. (Mainz U., Inst. Kernchem.) ; Sebastian, V. (Mainz U., Inst. Phys.) ; Jading, Y. (CERN) ; Koster, U. (Munich, Tech. U.) ; Lettry, J. (CERN) ; Ravn, H.L. (CERN) |
Publication | 1999 |
Imprint | 1998-12 |
Number of pages | 5 |
Note | Latex-file with 4 figures, 5 pages, Phys. Rev. Lett., in print |
In: | Phys. Rev. Lett. 82 (1999) 1391 |
DOI | 10.1103/PhysRevLett.82.1391 |
Subject category | Nuclear Physics - Experiment |
Accelerator/Facility, Experiment | CERN ISOLDE |
Abstract | The use of chemically selective laser ionization combined with beta-delayed neutron counting at CERN/ISOLDE has permitted identification and half-life measurements for 623-ms Mn-61 up through 14-ms Mn-69. The measured half-lives are found to be significantly longer near N=40 than the values calculated with a QRPA shell model using ground-state deformations from the FRDM and ETFSI models. Gamma-ray singles and coincidence spectroscopy has been performed for Mn-64 and Mn-66 decays to levels of Fe-64 and Fe-66, revealing a significant drop in the energy of the first 2+ state in these nuclides that suggests an unanticipated increase in collectivity near N=40. |