(1) Institute of Experimental Physics, Warsaw University, Hoa 69, 00-681 Warsaw, Poland;(2) Department of Radiation Sciences, Uppsala University, 611 82 Nyköping, Sweden;(3) Department of Nuclear Spectroscopy, Sotan Institute for Nuclear Studies, 05-400 wierk, Poland
Abstract:
The -decay of 149Ba to 149La has been investigated by means of - and X-ray spectroscopy, and a partial level scheme of 149La has been constructed for the first time. It includes thirteen -rays and ten excited states. The exotic 149La is the heaviest lanthanum for which spectroscopic information is now available. We have applied the shell correction approach with the axially deformed Woods-Saxon potential in order to calculate the deformation energy for the 149La ground state. The deformed ground state was found at 0.23, 0 and 0.12.Received: 18 July 2003, Revised: 12 January 2004, Published online: 26 May 2004PACS: 27.60. + j - 29.30.Kv X- and -ray spectroscopy
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a 69, 00-681 Warsaw, Poland;(2) Department of Radiation Sciences, Uppsala University, 611 82 Nyköping, Sweden;(3) Department of Nuclear Spectroscopy, So!["lstrok"]("/content/aljy052w7ulkbuw4/xlarge322.gif")
tan Institute for Nuclear Studies, 05-400 !["Sacute"]("/content/aljy052w7ulkbuw4/xlarge346.gif")
wierk, Poland
-decay of 149Ba to 149La has been investigated by means of 
- and X-ray spectroscopy, and a partial level scheme of 149La has been constructed for the first time. It includes thirteen 
-rays and ten excited states. The exotic 149La is the heaviest lanthanum for which spectroscopic information is now available. We have applied the shell correction approach with the axially deformed Woods-Saxon potential in order to calculate the deformation energy for the 149La ground state. The deformed ground state was found at 
0.23, 
0 and 
0.12.Received: 18 July 2003, Revised: 12 January 2004, Published online: 26 May 2004PACS: 27.60. + j 
- 29.30.Kv X- and 
-ray spectroscopy