Assignment of levels in 208Fr and 10- isomers in the odd-odd isotones 206At and 208Fr

G. D. Dracoulis; P. M. Davidson; G. J. Lane; A. P. Byrne; T. Kibédi; P. Nieminen; A. N. Wilson; H. Watanabe

doi:10.1140/epja/i2009-10756-y

Assignment of levels in ²⁰⁸Fr and 10^- isomers in the odd-odd isotones ²⁰⁶At and ²⁰⁸Fr

G. D. Dracoulis, P. M. Davidson, G. J. Lane, A. P. Byrne, T. Kibédi, P. Nieminen, A. N. Wilson, H. Watanabe

Research output: Contribution to journal › Article › peer-review

8 Citations (Scopus)

Abstract

Excited states in ²⁰⁸Fr have been identified using the ¹⁹⁷Au(¹⁶O, 5n)²⁰⁸Fr reaction and a variety of time-correlated γ -ray and conversion electron spectroscopic techniques. Transitions above and below a τ = 623(16) ns 10^- isomer are placed in the level scheme. This isomer is analogous to that observed in the odd-odd isotone ²⁰⁶At for which additional spectroscopic information is also obtained, including a precise lifetime of τ = 1173(30) ns. The γ -rays assigned to ²⁰⁸Fr are the same as the main transitions erroneously assigned to ²⁰⁹Fr in previous work.

Original language	English
Pages (from-to)	127-130
Number of pages	4
Journal	European Physical Journal A
Volume	40
Issue number	2
DOIs	https://doi.org/10.1140/epja/i2009-10756-y
Publication status	Published - May 2009

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title = "Assignment of levels in 208Fr and 10- isomers in the odd-odd isotones 206At and 208Fr",

abstract = "Excited states in 208Fr have been identified using the 197Au(16O, 5n)208Fr reaction and a variety of time-correlated γ -ray and conversion electron spectroscopic techniques. Transitions above and below a τ = 623(16) ns 10- isomer are placed in the level scheme. This isomer is analogous to that observed in the odd-odd isotone 206At for which additional spectroscopic information is also obtained, including a precise lifetime of τ = 1173(30) ns. The γ -rays assigned to 208Fr are the same as the main transitions erroneously assigned to 209Fr in previous work.",

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T1 - Assignment of levels in 208Fr and 10- isomers in the odd-odd isotones 206At and 208Fr

AU - Dracoulis, G. D.

AU - Davidson, P. M.

AU - Lane, G. J.

AU - Byrne, A. P.

AU - Kibédi, T.

AU - Nieminen, P.

AU - Wilson, A. N.

AU - Watanabe, H.

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N2 - Excited states in 208Fr have been identified using the 197Au(16O, 5n)208Fr reaction and a variety of time-correlated γ -ray and conversion electron spectroscopic techniques. Transitions above and below a τ = 623(16) ns 10- isomer are placed in the level scheme. This isomer is analogous to that observed in the odd-odd isotone 206At for which additional spectroscopic information is also obtained, including a precise lifetime of τ = 1173(30) ns. The γ -rays assigned to 208Fr are the same as the main transitions erroneously assigned to 209Fr in previous work.

AB - Excited states in 208Fr have been identified using the 197Au(16O, 5n)208Fr reaction and a variety of time-correlated γ -ray and conversion electron spectroscopic techniques. Transitions above and below a τ = 623(16) ns 10- isomer are placed in the level scheme. This isomer is analogous to that observed in the odd-odd isotone 206At for which additional spectroscopic information is also obtained, including a precise lifetime of τ = 1173(30) ns. The γ -rays assigned to 208Fr are the same as the main transitions erroneously assigned to 209Fr in previous work.

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JO - European Physical Journal A

JF - European Physical Journal A

IS - 2

ER -

Assignment of levels in ²⁰⁸Fr and 10^- isomers in the odd-odd isotones ²⁰⁶At and ²⁰⁸Fr

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