E3 and M2 transition strengths in Bi-209(83)

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 & 11 others 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

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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 Bi-209(83) have been determined from the direct half-life measurements of the 13/2(1)(+) and 1/2(1)(+) states using the Romanian array for gamma-ray SPectroscopy in HEavy ion REactions (RoSPHERE). The 13/2(1)(+) and 1/2(1)(+) 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 delta = -0.184(13) for the 1609 keV gamma-ray transition deexciting the 13/2(1)(+) state. This value for delta was combined with the measured half-life to give reduced transition probabilities of B(E3, 13/2(1)(+) -> 9/2(1)(-)) = 12(2) x 10(3) e(2) fm(6) and B(M2, 13/2(1)(+) -> 9/2(1)(-)) = 38(5)mu(2)(N) fm(2). These values are in good agreement with calculations within the finite Fermi system. The extracted value of B(E3, 1/2(1)(+) -> 7/2(1)(-)) = 6.3(2) x 10(3) e(2) fm(6) can be explained by a small (similar to 6%) admixture in the wave function of the 1/2(1)(+) state.
Original languageEnglish
Article number014309
JournalPhysical Review C
Volume93
DOIs
Publication statusPublished - 14 Jan 2016

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half life
transition probabilities
gamma rays
mixing ratios
admixtures
heavy ions
angular distribution
wave functions
protons
spectroscopy

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Roberts, O. J., Niţă, C. R., Bruce, A. M., Mărginean, N., Bucurescu, D., Deleanu, D., ... Townsley, C. M. (2016). E3 and M2 transition strengths in Bi-209(83). Physical Review C, 93, [014309]. https://doi.org/10.1103/PhysRevC.93.014309
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. ; Alharbi, T. ; Alexander, T. ; Aydin, S. ; Brown, B. A. ; Browne, F. ; Carroll, R. J. ; Mulholland, K. ; Podolyák, Zs. ; Regan, P. H. ; Smith, J. F. ; Smolen, M. ; Townsley, C. M. / E3 and M2 transition strengths in Bi-209(83). In: Physical Review C. 2016 ; Vol. 93.
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title = "E3 and M2 transition strengths in Bi-209(83)",
abstract = "The 1i(13/2) -> 1h(9/2) (M2) and 3s(1/2) -> 2f(7/2) (E3) reduced proton transition probabilities in Bi-209(83) have been determined from the direct half-life measurements of the 13/2(1)(+) and 1/2(1)(+) states using the Romanian array for gamma-ray SPectroscopy in HEavy ion REactions (RoSPHERE). The 13/2(1)(+) and 1/2(1)(+) 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 delta = -0.184(13) for the 1609 keV gamma-ray transition deexciting the 13/2(1)(+) state. This value for delta was combined with the measured half-life to give reduced transition probabilities of B(E3, 13/2(1)(+) -> 9/2(1)(-)) = 12(2) x 10(3) e(2) fm(6) and B(M2, 13/2(1)(+) -> 9/2(1)(-)) = 38(5)mu(2)(N) fm(2). These values are in good agreement with calculations within the finite Fermi system. The extracted value of B(E3, 1/2(1)(+) -> 7/2(1)(-)) = 6.3(2) x 10(3) e(2) fm(6) can be explained by a small (similar to 6{\%}) admixture in the wave function of the 1/2(1)(+) state.",
author = "Roberts, {O. J.} and C.R. Niţă and Bruce, {A. M.} and N. Mărginean and D. Bucurescu and D. Deleanu and D. Filipescu and Florea, {N. M.} and I. Gheorghe and D. Ghiţă and T. Glodariu and R. Lica and R. Mărginean and C. Mihai and A. Negret and T. Sava and L. Stroe and R. Şuvăilă 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.}",
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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 Bi-209(83)' Physical Review C, vol. 93, 014309. https://doi.org/10.1103/PhysRevC.93.014309

E3 and M2 transition strengths in Bi-209(83). / 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.; Alharbi, T.; Alexander, T.; Aydin, S.; Brown, B. A.; Browne, F.; Carroll, R. J.; Mulholland, K.; Podolyák, Zs.; Regan, P. H.; Smith, J. F.; Smolen, M.; Townsley, C. M.

In: Physical Review C, Vol. 93, 014309, 14.01.2016.

Research output: Contribution to journalArticle

TY - JOUR

T1 - E3 and M2 transition strengths in Bi-209(83)

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 1i(13/2) -> 1h(9/2) (M2) and 3s(1/2) -> 2f(7/2) (E3) reduced proton transition probabilities in Bi-209(83) have been determined from the direct half-life measurements of the 13/2(1)(+) and 1/2(1)(+) states using the Romanian array for gamma-ray SPectroscopy in HEavy ion REactions (RoSPHERE). The 13/2(1)(+) and 1/2(1)(+) 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 delta = -0.184(13) for the 1609 keV gamma-ray transition deexciting the 13/2(1)(+) state. This value for delta was combined with the measured half-life to give reduced transition probabilities of B(E3, 13/2(1)(+) -> 9/2(1)(-)) = 12(2) x 10(3) e(2) fm(6) and B(M2, 13/2(1)(+) -> 9/2(1)(-)) = 38(5)mu(2)(N) fm(2). These values are in good agreement with calculations within the finite Fermi system. The extracted value of B(E3, 1/2(1)(+) -> 7/2(1)(-)) = 6.3(2) x 10(3) e(2) fm(6) can be explained by a small (similar to 6%) admixture in the wave function of the 1/2(1)(+) state.

AB - The 1i(13/2) -> 1h(9/2) (M2) and 3s(1/2) -> 2f(7/2) (E3) reduced proton transition probabilities in Bi-209(83) have been determined from the direct half-life measurements of the 13/2(1)(+) and 1/2(1)(+) states using the Romanian array for gamma-ray SPectroscopy in HEavy ion REactions (RoSPHERE). The 13/2(1)(+) and 1/2(1)(+) 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 delta = -0.184(13) for the 1609 keV gamma-ray transition deexciting the 13/2(1)(+) state. This value for delta was combined with the measured half-life to give reduced transition probabilities of B(E3, 13/2(1)(+) -> 9/2(1)(-)) = 12(2) x 10(3) e(2) fm(6) and B(M2, 13/2(1)(+) -> 9/2(1)(-)) = 38(5)mu(2)(N) fm(2). These values are in good agreement with calculations within the finite Fermi system. The extracted value of B(E3, 1/2(1)(+) -> 7/2(1)(-)) = 6.3(2) x 10(3) e(2) fm(6) can be explained by a small (similar to 6%) admixture in the wave function of the 1/2(1)(+) state.

U2 - 10.1103/PhysRevC.93.014309

DO - 10.1103/PhysRevC.93.014309

M3 - Article

VL - 93

JO - Physical Review C

JF - Physical Review C

SN - 2469-9985

M1 - 014309

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Roberts OJ, Niţă CR, Bruce AM, Mărginean N, Bucurescu D, Deleanu D et al. E3 and M2 transition strengths in Bi-209(83). Physical Review C. 2016 Jan 14;93. 014309. https://doi.org/10.1103/PhysRevC.93.014309