Competing decay modes of a high-spin isomer in the proton-unbound nucleus <sup>158</sup>Ta

Carroll, RJ; Page, RD; Joss, DT; Uusitalo, J; Darby, IG; Andgren, K; Cederwall, B; Eeckhaudt, S; Grahn, T; Gray-Jones, C; Greenlees, PT; Hadinia, B; Jones, PM; Julin, R; Juutinen, S; Leino, M; Leppänen, AP; Nyman, M; O'Donnell, D; Pakarinen, J; Rahkila, P; Sandzelius, M; Sarén, J; Scholey, C; Seweryniak, D; Simpson, J

Competing decay modes of a high-spin isomer in the proton-unbound nucleus <sup>158</sup>Ta

Carroll, RJ Page, RD Joss, DT Uusitalo, J Darby, IG Andgren, K Cederwall, B Eeckhaudt, S Grahn, T Gray-Jones, C Greenlees, PT Hadinia, B Jones, PM Julin, R Juutinen, S Leino, M Leppänen, AP Nyman, M O'Donnell, D Pakarinen, J Rahkila, P Sandzelius, M Sarén, J Scholey, C Seweryniak, D Simpson, J

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Publication Type:: Conference Proceeding
Citation:: Acta Physica Polonica B, 2015, 46 (3), pp. 695 - 698
Issue Date:: 2015-03-01

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Field	Value	Language
dc.contributor.author	Carroll, RJ	en_US
dc.contributor.author	Page, RD	en_US
dc.contributor.author	Joss, DT	en_US
dc.contributor.author	Uusitalo, J	en_US
dc.contributor.author	Darby, IG	en_US
dc.contributor.author	Andgren, K	en_US
dc.contributor.author	Cederwall, B	en_US
dc.contributor.author	Eeckhaudt, S	en_US
dc.contributor.author	Grahn, T	en_US
dc.contributor.author	Gray-Jones, C	en_US
dc.contributor.author	Greenlees, PT	en_US
dc.contributor.author	Hadinia, B	en_US
dc.contributor.author	Jones, PM	en_US
dc.contributor.author	Julin, R	en_US
dc.contributor.author	Juutinen, S	en_US
dc.contributor.author	Leino, M	en_US
dc.contributor.author	Leppänen, AP	en_US
dc.contributor.author	Nyman, M	en_US
dc.contributor.author	O'Donnell, D	en_US
dc.contributor.author	Pakarinen, J	en_US
dc.contributor.author	Rahkila, P	en_US
dc.contributor.author	Sandzelius, M	en_US
dc.contributor.author	Sarén, J	en_US
dc.contributor.author	Scholey, C	en_US
dc.contributor.author	Seweryniak, D	en_US
dc.contributor.author	Simpson, J	en_US
dc.date.issued	2015-03-01	en_US
dc.identifier.citation	Acta Physica Polonica B, 2015, 46 (3), pp. 695 - 698	en_US
dc.identifier.issn	0587-4254	en_US
dc.identifier.uri	http://hdl.handle.net/10453/121273
dc.description.abstract	An isomeric state at high spin and excitation energy was recently observed in the proton-unbound nucleus 158Ta. This state was observed to decay by both α and γ decay modes. The large spin change required to decay via γ-ray emission incurs a lifetime long enough for α decay to compete. The α decay has an energy of 8644(11) keV, which is among the highest observed in the region, a partial half-life of 440(70) μs and changes the spin by 11h. In this paper, additional evidence supporting the assignment of this α decay to the high-spin isomer in 158Ta will be presented.	en_US
dc.relation.ispartof	Acta Physica Polonica B	en_US
dc.relation.isbasedon	10.5506/APhysPolB.46.695	en_US
dc.subject.classification	Nuclear & Particles Physics	en_US
dc.title	Competing decay modes of a high-spin isomer in the proton-unbound nucleus <sup>158</sup>Ta	en_US
dc.type	Conference Proceeding
utslib.citation.volume	3	en_US
utslib.citation.volume	46	en_US
utslib.for	01 Mathematical Sciences	en_US
utslib.for	02 Physical Sciences	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Science
pubs.organisational-group	/University of Technology Sydney/Faculty of Science/School of Mathematical and Physical Sciences
utslib.copyright.status	open_access
pubs.issue	3	en_US
pubs.publication-status	Published	en_US
pubs.volume	46	en_US

Abstract:

An isomeric state at high spin and excitation energy was recently observed in the proton-unbound nucleus 158Ta. This state was observed to decay by both α and γ decay modes. The large spin change required to decay via γ-ray emission incurs a lifetime long enough for α decay to compete. The α decay has an energy of 8644(11) keV, which is among the highest observed in the region, a partial half-life of 440(70) μs and changes the spin by 11h. In this paper, additional evidence supporting the assignment of this α decay to the high-spin isomer in 158Ta will be presented.

Please use this identifier to cite or link to this item:

http://hdl.handle.net/10453/121273