E3 and M2 transition strengths in 83209Bi

O. J. Roberts; C.R. Niţă; A. M. Bruce; N. Mărginean; D. Bucurescu; D. Deleanu; D. Filipescu; N. M. Florea; I. Gheorghe; D. Ghiţă; T. Glodariu; R. Lica; R. Mărginean; C. Mihai; A. Negret; T. Sava; L. Stroe; R. Şuvăilă; S. Toma; T. Alharbi; T. Alexander; S. Aydin; B. A. Brown; F. Browne; R. J. Carroll; K. Mulholland; Zs. Podolyák; P. H. Regan; J. F. Smith; M. Smolen; C. M. Townsley

doi:10.1103/PhysRevC.93.014309

E3 and M2 transition strengths in ₈₃²⁰⁹Bi

O. J. Roberts, C.R. Niţă, A. M. Bruce, N. Mărginean, D. Bucurescu, D. Deleanu, D. Filipescu, N. M. Florea, I. Gheorghe, D. Ghiţă, T. Glodariu, R. Lica, R. Mărginean, C. Mihai, A. Negret, T. Sava, L. Stroe, R. Şuvăilă, S. Toma, T. AlharbiT. Alexander, S. Aydin, B. A. Brown, F. Browne, R. J. Carroll, K. Mulholland, Zs. Podolyák, P. H. Regan, J. F. Smith, M. Smolen, C. M. Townsley

School of Computing, Engineering and Physical Sciences

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Abstract

The 1i_13/2 -> 1h_9/2 (M2) and 3s_1/2 -> 2f_7/2 (E3) reduced proton transition probabilities in ₈₃²⁰⁹Bi have been determined from the direct half-life measurements of the 13/2₁⁺ and 1/2₁⁺ states using the Romanian array for gamma-ray SPectroscopy in HEavy ion REactions (RoSPHERE). The 13/2₁⁺ and 1/2₁⁺ states were found to have T_1/2 = 0.120(15) ns and T_1/2 = 9.02(24) ns respectively. Angular distribution measurements were used to determine an E3/M2 mixing ratio of δ = -0.184(13) for the 1609 keV gamma-ray transition deexciting the 13/2₁⁺ state. This value for δ was combined with the measured half-life to give reduced transition probabilities of B(E3, 13/2₁⁺ -> 9/2₁^-) = 12(2) x 10³ e² fm⁶ and B(M2, 13/2₁⁺ -> 9/2₁^-) = 38(5)μ²_N fm². These values are in good agreement with calculations within the finite Fermi system. The extracted value of B(E3, 1/2₁⁺) -> 7/2₁^-) = 6.3(2) x 10³ e² fm⁶ can be explained by a small (similar to 6%) admixture in the wave function of the 1/2₁⁺ state.

Original language	English
Article number	014309
Journal	Physical Review C
Volume	93
DOIs	https://doi.org/10.1103/PhysRevC.93.014309
Publication status	Published - 14 Jan 2016

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Roberts, O. J., Niţă, C. R., Bruce, A. M., Mărginean, N., Bucurescu, D., Deleanu, D., Filipescu, D., Florea, N. M., Gheorghe, I., Ghiţă, D., Glodariu, T., Lica, R., Mărginean, R., Mihai, C., Negret, A., Sava, T., Stroe, L., Şuvăilă, R., Toma, S., ... Townsley, C. M. (2016). E3 and M2 transition strengths in ₈₃²⁰⁹Bi. Physical Review C, 93, Article 014309. https://doi.org/10.1103/PhysRevC.93.014309

@article{7ef055f186e14b50a7431efde20349d1,

title = "E3 and M2 transition strengths in 83209Bi",

abstract = "The 1i13/2 -> 1h9/2 (M2) and 3s1/2 -> 2f7/2 (E3) reduced proton transition probabilities in 83209Bi have been determined from the direct half-life measurements of the 13/21+ and 1/21+ states using the Romanian array for gamma-ray SPectroscopy in HEavy ion REactions (RoSPHERE). The 13/21+ and 1/21+ states were found to have T1/2 = 0.120(15) ns and T1/2 = 9.02(24) ns respectively. Angular distribution measurements were used to determine an E3/M2 mixing ratio of δ = -0.184(13) for the 1609 keV gamma-ray transition deexciting the 13/21+ state. This value for δ was combined with the measured half-life to give reduced transition probabilities of B(E3, 13/21+ -> 9/21-) = 12(2) x 103 e2 fm6 and B(M2, 13/21+ -> 9/21-) = 38(5)μ2N fm2. These values are in good agreement with calculations within the finite Fermi system. The extracted value of B(E3, 1/21+) -> 7/21-) = 6.3(2) x 103 e2 fm6 can be explained by a small (similar to 6%) admixture in the wave function of the 1/21+ state.",

author = "Roberts, {O. J.} and C.R. Ni{\c t}{\u a} and Bruce, {A. M.} and N. M{\u a}rginean and D. Bucurescu and D. Deleanu and D. Filipescu and Florea, {N. M.} and I. Gheorghe and D. Ghi{\c t}{\u a} and T. Glodariu and R. Lica and R. M{\u a}rginean and C. Mihai and A. Negret and T. Sava and L. Stroe and R. {\c S}uv{\u a}il{\u a} and S. Toma and T. Alharbi and T. Alexander and S. Aydin and Brown, {B. A.} and F. Browne and Carroll, {R. J.} and K. Mulholland and Zs. Podoly{\'a}k and Regan, {P. H.} and Smith, {J. F.} and M. Smolen and Townsley, {C. M.}",

year = "2016",

month = jan,

day = "14",

doi = "10.1103/PhysRevC.93.014309",

language = "English",

volume = "93",

journal = "Physical Review C",

issn = "2469-9985",

publisher = "American Physical Society",

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Roberts, OJ, Niţă, CR, Bruce, AM, Mărginean, N, Bucurescu, D, Deleanu, D, Filipescu, D, Florea, NM, Gheorghe, I, Ghiţă, D, Glodariu, T, Lica, R, Mărginean, R, Mihai, C, Negret, A, Sava, T, Stroe, L, Şuvăilă, R, Toma, S, Alharbi, T, Alexander, T, Aydin, S, Brown, BA, Browne, F, Carroll, RJ, Mulholland, K, Podolyák, Z, Regan, PH, Smith, JF, Smolen, M & Townsley, CM 2016, 'E3 and M2 transition strengths in ₈₃²⁰⁹Bi', Physical Review C, vol. 93, 014309. https://doi.org/10.1103/PhysRevC.93.014309

TY - JOUR

T1 - E3 and M2 transition strengths in 83209Bi

AU - Roberts, O. J.

AU - Niţă, C.R.

AU - Bruce, A. M.

AU - Mărginean, N.

AU - Bucurescu, D.

AU - Deleanu, D.

AU - Filipescu, D.

AU - Florea, N. M.

AU - Gheorghe, I.

AU - Ghiţă, D.

AU - Glodariu, T.

AU - Lica, R.

AU - Mărginean, R.

AU - Mihai, C.

AU - Negret, A.

AU - Sava, T.

AU - Stroe, L.

AU - Şuvăilă, R.

AU - Toma, S.

AU - Alharbi, T.

AU - Alexander, T.

AU - Aydin, S.

AU - Brown, B. A.

AU - Browne, F.

AU - Carroll, R. J.

AU - Mulholland, K.

AU - Podolyák, Zs.

AU - Regan, P. H.

AU - Smith, J. F.

AU - Smolen, M.

AU - Townsley, C. M.

PY - 2016/1/14

Y1 - 2016/1/14

N2 - The 1i13/2 -> 1h9/2 (M2) and 3s1/2 -> 2f7/2 (E3) reduced proton transition probabilities in 83209Bi have been determined from the direct half-life measurements of the 13/21+ and 1/21+ states using the Romanian array for gamma-ray SPectroscopy in HEavy ion REactions (RoSPHERE). The 13/21+ and 1/21+ states were found to have T1/2 = 0.120(15) ns and T1/2 = 9.02(24) ns respectively. Angular distribution measurements were used to determine an E3/M2 mixing ratio of δ = -0.184(13) for the 1609 keV gamma-ray transition deexciting the 13/21+ state. This value for δ was combined with the measured half-life to give reduced transition probabilities of B(E3, 13/21+ -> 9/21-) = 12(2) x 103 e2 fm6 and B(M2, 13/21+ -> 9/21-) = 38(5)μ2N fm2. These values are in good agreement with calculations within the finite Fermi system. The extracted value of B(E3, 1/21+) -> 7/21-) = 6.3(2) x 103 e2 fm6 can be explained by a small (similar to 6%) admixture in the wave function of the 1/21+ state.

AB - The 1i13/2 -> 1h9/2 (M2) and 3s1/2 -> 2f7/2 (E3) reduced proton transition probabilities in 83209Bi have been determined from the direct half-life measurements of the 13/21+ and 1/21+ states using the Romanian array for gamma-ray SPectroscopy in HEavy ion REactions (RoSPHERE). The 13/21+ and 1/21+ states were found to have T1/2 = 0.120(15) ns and T1/2 = 9.02(24) ns respectively. Angular distribution measurements were used to determine an E3/M2 mixing ratio of δ = -0.184(13) for the 1609 keV gamma-ray transition deexciting the 13/21+ state. This value for δ was combined with the measured half-life to give reduced transition probabilities of B(E3, 13/21+ -> 9/21-) = 12(2) x 103 e2 fm6 and B(M2, 13/21+ -> 9/21-) = 38(5)μ2N fm2. These values are in good agreement with calculations within the finite Fermi system. The extracted value of B(E3, 1/21+) -> 7/21-) = 6.3(2) x 103 e2 fm6 can be explained by a small (similar to 6%) admixture in the wave function of the 1/21+ state.

U2 - 10.1103/PhysRevC.93.014309

DO - 10.1103/PhysRevC.93.014309

M3 - Article

SN - 2469-9985

VL - 93

JO - Physical Review C

JF - Physical Review C

M1 - 014309

ER -

E3 and M2 transition strengths in 83209Bi

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E3 and M2 transition strengths in ₈₃²⁰⁹Bi