On the enhanced E1 transitions in the K = 3/2 parity doublet band in 223Ra

H. Mach; A. Lindroth; E. Ruchowska; J. Kvasil; B. Fogelberg; K. Gulda; A. J. Aas; M. J. G. Borge; I. S. Grant; E. Hagebø; W. Kurcewicz; T. Martinez; B. Rubio; J. F. Smith; K. Steffensen; J. L. Tain; O. Tengblad; T. F. Thorsteinsen

doi:10.1140/epja/i2016-16172-4

On the enhanced E1 transitions in the K = 3/2 parity doublet band in 223Ra

H. Mach, A. Lindroth, E. Ruchowska, J. Kvasil, B. Fogelberg, K. Gulda, A. J. Aas, M. J. G. Borge, I. S. Grant, E. Hagebø, W. Kurcewicz, T. Martinez, B. Rubio, J. F. Smith, K. Steffensen, J. L. Tain, O. Tengblad, T. F. Thorsteinsen

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Abstract

We have applied the fast timing βγγ(t)βγγ(t) technique to remeasure lifetimes of selected states in 223Ra populated in the β−β− decay of 223Fr. T1/2=587(12)T1/2=587(12) ps and 210(13)ps have been obtained for the 3/2−3/2− and 5/2−5/2− states at 50.1 and 79.7 keV, that are more accurate than the previous values of 630(70)ps and 166(55)ps, respectively. Our |D0||D0| value of 0.155(10)e·fm obtained for the K=3/2K=3/2 configuration together with the available values of |D0||D0| for the K=1/2K=1/2 and K=5/2K=5/2 parity doublet bands establish the configuration dependence of |D0||D0| at low spins in this nucleus. Results of theoretical calculations performed for 223Ra, using the quasiparticle-phonon model (QPM) with inclusion of the Coriolis coupling, reasonably well reproduce octupole correlations in this nucleus.

Original language	English
Article number	172
Journal	The European Physical Journal A
Volume	52
Issue number	6
DOIs	https://doi.org/10.1140/epja/i2016-16172-4
Publication status	Published - 24 Jun 2016

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Mach, H., Lindroth, A., Ruchowska, E., Kvasil, J., Fogelberg, B., Gulda, K., Aas, A. J., Borge, M. J. G., Grant, I. S., Hagebø, E., Kurcewicz, W., Martinez, T., Rubio, B., Smith, J. F., Steffensen, K., Tain, J. L., Tengblad, O., & Thorsteinsen, T. F. (2016). On the enhanced E1 transitions in the K = 3/2 parity doublet band in 223Ra. The European Physical Journal A, 52(6), Article 172. https://doi.org/10.1140/epja/i2016-16172-4

@article{84347e34a25b4de6983835d9532697ce,

title = "On the enhanced E1 transitions in the K = 3/2 parity doublet band in 223Ra",

abstract = "We have applied the fast timing βγγ(t)βγγ(t) technique to remeasure lifetimes of selected states in 223Ra populated in the β−β− decay of 223Fr. T1/2=587(12)T1/2=587(12) ps and 210(13)ps have been obtained for the 3/2−3/2− and 5/2−5/2− states at 50.1 and 79.7 keV, that are more accurate than the previous values of 630(70)ps and 166(55)ps, respectively. Our |D0||D0| value of 0.155(10)e·fm obtained for the K=3/2K=3/2 configuration together with the available values of |D0||D0| for the K=1/2K=1/2 and K=5/2K=5/2 parity doublet bands establish the configuration dependence of |D0||D0| at low spins in this nucleus. Results of theoretical calculations performed for 223Ra, using the quasiparticle-phonon model (QPM) with inclusion of the Coriolis coupling, reasonably well reproduce octupole correlations in this nucleus.",

author = "H. Mach and A. Lindroth and E. Ruchowska and J. Kvasil and B. Fogelberg and K. Gulda and Aas, {A. J.} and Borge, {M. J. G.} and Grant, {I. S.} and E. Hageb{\o} and W. Kurcewicz and T. Martinez and B. Rubio and Smith, {J. F.} and K. Steffensen and Tain, {J. L.} and O. Tengblad and Thorsteinsen, {T. F.}",

year = "2016",

month = jun,

day = "24",

doi = "10.1140/epja/i2016-16172-4",

language = "English",

volume = "52",

journal = "The European Physical Journal A",

issn = "1434-601X",

publisher = "Springer",

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Mach, H, Lindroth, A, Ruchowska, E, Kvasil, J, Fogelberg, B, Gulda, K, Aas, AJ, Borge, MJG, Grant, IS, Hagebø, E, Kurcewicz, W, Martinez, T, Rubio, B, Smith, JF, Steffensen, K, Tain, JL, Tengblad, O & Thorsteinsen, TF 2016, 'On the enhanced E1 transitions in the K = 3/2 parity doublet band in 223Ra', The European Physical Journal A, vol. 52, no. 6, 172. https://doi.org/10.1140/epja/i2016-16172-4

TY - JOUR

T1 - On the enhanced E1 transitions in the K = 3/2 parity doublet band in 223Ra

AU - Mach, H.

AU - Lindroth, A.

AU - Ruchowska, E.

AU - Kvasil, J.

AU - Fogelberg, B.

AU - Gulda, K.

AU - Aas, A. J.

AU - Borge, M. J. G.

AU - Grant, I. S.

AU - Hagebø, E.

AU - Kurcewicz, W.

AU - Martinez, T.

AU - Rubio, B.

AU - Smith, J. F.

AU - Steffensen, K.

AU - Tain, J. L.

AU - Tengblad, O.

AU - Thorsteinsen, T. F.

PY - 2016/6/24

Y1 - 2016/6/24

N2 - We have applied the fast timing βγγ(t)βγγ(t) technique to remeasure lifetimes of selected states in 223Ra populated in the β−β− decay of 223Fr. T1/2=587(12)T1/2=587(12) ps and 210(13)ps have been obtained for the 3/2−3/2− and 5/2−5/2− states at 50.1 and 79.7 keV, that are more accurate than the previous values of 630(70)ps and 166(55)ps, respectively. Our |D0||D0| value of 0.155(10)e·fm obtained for the K=3/2K=3/2 configuration together with the available values of |D0||D0| for the K=1/2K=1/2 and K=5/2K=5/2 parity doublet bands establish the configuration dependence of |D0||D0| at low spins in this nucleus. Results of theoretical calculations performed for 223Ra, using the quasiparticle-phonon model (QPM) with inclusion of the Coriolis coupling, reasonably well reproduce octupole correlations in this nucleus.

AB - We have applied the fast timing βγγ(t)βγγ(t) technique to remeasure lifetimes of selected states in 223Ra populated in the β−β− decay of 223Fr. T1/2=587(12)T1/2=587(12) ps and 210(13)ps have been obtained for the 3/2−3/2− and 5/2−5/2− states at 50.1 and 79.7 keV, that are more accurate than the previous values of 630(70)ps and 166(55)ps, respectively. Our |D0||D0| value of 0.155(10)e·fm obtained for the K=3/2K=3/2 configuration together with the available values of |D0||D0| for the K=1/2K=1/2 and K=5/2K=5/2 parity doublet bands establish the configuration dependence of |D0||D0| at low spins in this nucleus. Results of theoretical calculations performed for 223Ra, using the quasiparticle-phonon model (QPM) with inclusion of the Coriolis coupling, reasonably well reproduce octupole correlations in this nucleus.

U2 - 10.1140/epja/i2016-16172-4

DO - 10.1140/epja/i2016-16172-4

M3 - Article

SN - 1434-601X

VL - 52

JO - The European Physical Journal A

JF - The European Physical Journal A

IS - 6

M1 - 172

ER -

On the enhanced E1 transitions in the K = 3/2 parity doublet band in 223Ra

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