Isomeric state in the doubly odd $^196At$ nucleus

M.B. Smith, R. Chapman, J.F.C. Cocks, K.M. Spohr, O. Dorvaux, K. Helariutta, P.M. Jones, R. Julin, S. Juutinen, H. Kankaanpää, H. Kettunen, P. Kuusiniemi, Y. Le Coz, M. Leino, D.J. Middleton, M. Muikku, P. Nieminen, P. Rahkila, A. Savelius

Research output: Contribution to journalArticle

Abstract

An excited isomeric state has been identified in the 196At nucleus using the recoil decay tagging technique. This is the first identification of an excited state in this neutron-deficient odd–odd nucleus. Several tentative prompt γ -rays have also been correlated with 196At α-decay, although it has not been possible to assign them to specific energy levels in 196At. The mean lifetime of the isomeric state has been measured as τ = 11 ± 2 µs. The new level is compared with similar low-lying states in neighbouring nuclei and is de-excited by an E2 γ -ray transition, the large hindrance of which is not expected.
Original languageEnglish
Pages (from-to)787-792
Number of pages6
JournalJournal of Physics G: Nuclear and Particle Physics
Volume26
Issue number6
DOIs
Publication statusPublished - Jun 2000

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nuclei
rays
decay
marking
excitation
energy levels
neutrons
life (durability)

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Smith, M. B., Chapman, R., Cocks, J. F. C., Spohr, K. M., Dorvaux, O., Helariutta, K., ... Savelius, A. (2000). Isomeric state in the doubly odd $^196At$ nucleus. Journal of Physics G: Nuclear and Particle Physics, 26(6), 787-792. https://doi.org/10.1088/0954-3899/26/6/303
Smith, M.B. ; Chapman, R. ; Cocks, J.F.C. ; Spohr, K.M. ; Dorvaux, O. ; Helariutta, K. ; Jones, P.M. ; Julin, R. ; Juutinen, S. ; Kankaanpää, H. ; Kettunen, H. ; Kuusiniemi, P. ; Le Coz, Y. ; Leino, M. ; Middleton, D.J. ; Muikku, M. ; Nieminen, P. ; Rahkila, P. ; Savelius, A. / Isomeric state in the doubly odd $^196At$ nucleus. In: Journal of Physics G: Nuclear and Particle Physics. 2000 ; Vol. 26, No. 6. pp. 787-792.
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author = "M.B. Smith and R. Chapman and J.F.C. Cocks and K.M. Spohr and O. Dorvaux and K. Helariutta and P.M. Jones and R. Julin and S. Juutinen and H. Kankaanp{\"a}{\"a} and H. Kettunen and P. Kuusiniemi and {Le Coz}, Y. and M. Leino and D.J. Middleton and M. Muikku and P. Nieminen and P. Rahkila and A. Savelius",
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Smith, MB, Chapman, R, Cocks, JFC, Spohr, KM, Dorvaux, O, Helariutta, K, Jones, PM, Julin, R, Juutinen, S, Kankaanpää, H, Kettunen, H, Kuusiniemi, P, Le Coz, Y, Leino, M, Middleton, DJ, Muikku, M, Nieminen, P, Rahkila, P & Savelius, A 2000, 'Isomeric state in the doubly odd $^196At$ nucleus' Journal of Physics G: Nuclear and Particle Physics, vol. 26, no. 6, pp. 787-792. https://doi.org/10.1088/0954-3899/26/6/303

Isomeric state in the doubly odd $^196At$ nucleus. / Smith, M.B.; Chapman, R.; Cocks, J.F.C.; Spohr, K.M.; Dorvaux, O.; Helariutta, K.; Jones, P.M.; Julin, R.; Juutinen, S.; Kankaanpää, H.; Kettunen, H.; Kuusiniemi, P.; Le Coz, Y.; Leino, M.; Middleton, D.J.; Muikku, M.; Nieminen, P.; Rahkila, P.; Savelius, A.

In: Journal of Physics G: Nuclear and Particle Physics, Vol. 26, No. 6, 06.2000, p. 787-792.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Isomeric state in the doubly odd $^196At$ nucleus

AU - Smith, M.B.

AU - Chapman, R.

AU - Cocks, J.F.C.

AU - Spohr, K.M.

AU - Dorvaux, O.

AU - Helariutta, K.

AU - Jones, P.M.

AU - Julin, R.

AU - Juutinen, S.

AU - Kankaanpää, H.

AU - Kettunen, H.

AU - Kuusiniemi, P.

AU - Le Coz, Y.

AU - Leino, M.

AU - Middleton, D.J.

AU - Muikku, M.

AU - Nieminen, P.

AU - Rahkila, P.

AU - Savelius, A.

PY - 2000/6

Y1 - 2000/6

N2 - An excited isomeric state has been identified in the 196At nucleus using the recoil decay tagging technique. This is the first identification of an excited state in this neutron-deficient odd–odd nucleus. Several tentative prompt γ -rays have also been correlated with 196At α-decay, although it has not been possible to assign them to specific energy levels in 196At. The mean lifetime of the isomeric state has been measured as τ = 11 ± 2 µs. The new level is compared with similar low-lying states in neighbouring nuclei and is de-excited by an E2 γ -ray transition, the large hindrance of which is not expected.

AB - An excited isomeric state has been identified in the 196At nucleus using the recoil decay tagging technique. This is the first identification of an excited state in this neutron-deficient odd–odd nucleus. Several tentative prompt γ -rays have also been correlated with 196At α-decay, although it has not been possible to assign them to specific energy levels in 196At. The mean lifetime of the isomeric state has been measured as τ = 11 ± 2 µs. The new level is compared with similar low-lying states in neighbouring nuclei and is de-excited by an E2 γ -ray transition, the large hindrance of which is not expected.

U2 - 10.1088/0954-3899/26/6/303

DO - 10.1088/0954-3899/26/6/303

M3 - Article

VL - 26

SP - 787

EP - 792

JO - Journal of Physics G: Nuclear and Particle Physics

JF - Journal of Physics G: Nuclear and Particle Physics

SN - 0954-3899

IS - 6

ER -