Lifetimes of intruder states in 186Pb, 188Pb and 194Po

T. Grahn; A. Dewald; O. Möller; R. Julin; C. W. Beausang; S. Christen; I. G. Darby; S. Eeckhaudt; P. T. Greenlees; A. Görgen; K. Helariutta; J. Jolie; P. Jones; S. Juutinen; H. Kettunen; T. Kröll; R. Krücken; Y. Le Coz; M. Leino; A. P. Leppänen; P. Maierbeck; D. A. Meyer; B. Melon; P. Nieminen; M. Nyman; R. D. Page; J. Pakarinen; P. Petkov; P. Rahkila; B. Saha; M. Sandzelius; J. Sarén; C. Scholey; J. Uusitalo; M. Bender; P. H. Heenen

doi:10.1016/j.nuclphysa.2008.01.002

Lifetimes of intruder states in ¹⁸⁶Pb, ¹⁸⁸Pb and ¹⁹⁴Po

T. Grahn^*, A. Dewald, O. Möller, R. Julin, C. W. Beausang, S. Christen, I. G. Darby, S. Eeckhaudt, P. T. Greenlees, A. Görgen, K. Helariutta, J. Jolie, P. Jones, S. Juutinen, H. Kettunen, T. Kröll, R. Krücken, Y. Le Coz, M. Leino, A. P. LeppänenP. Maierbeck, D. A. Meyer, B. Melon, P. Nieminen, M. Nyman, R. D. Page, J. Pakarinen, P. Petkov, P. Rahkila, B. Saha, M. Sandzelius, J. Sarén, C. Scholey, J. Uusitalo, M. Bender, P. H. Heenen

^*Corresponding author for this work

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

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Abstract

Lifetimes of prolate intruder states in ¹⁸⁶Pb and ¹⁸⁸Pb and oblate intruder states in ¹⁹⁴Po have been determined through recoil distance Doppler-shift lifetime measurements. Deformation parameters of | β₂ | = 0.29 (5) and | β₂ | = 0.17(3) have been extracted from experimental B (E 2) values for the prolate and the oblate bands, respectively. The present study addresses the phenomenon of shape coexistence typical for the nuclei near Z = 82 and N = 104, providing information on configuration mixing of intrinsic structures of the nuclei of interest. The results are compared with the available lifetime data and theoretical results for neutron-deficient Po, Pb, Hg and Pt nuclei. Furthermore, new self-consistent mean-field calculations have been carried out for ¹⁹⁴Po.

Original language	English
Pages (from-to)	83-100
Number of pages	18
Journal	Nuclear Physics A
Volume	801
Issue number	3-4
DOIs	https://doi.org/10.1016/j.nuclphysa.2008.01.002
Publication status	Published - 15 Mar 2008
Externally published	Yes

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10.1016/j.nuclphysa.2008.01.002

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Grahn, T., Dewald, A., Möller, O., Julin, R., Beausang, C. W., Christen, S., Darby, I. G., Eeckhaudt, S., Greenlees, P. T., Görgen, A., Helariutta, K., Jolie, J., Jones, P., Juutinen, S., Kettunen, H., Kröll, T., Krücken, R., Coz, Y. L., Leino, M., ... Heenen, P. H. (2008). Lifetimes of intruder states in ¹⁸⁶Pb, ¹⁸⁸Pb and ¹⁹⁴Po. Nuclear Physics A, 801(3-4), 83-100. https://doi.org/10.1016/j.nuclphysa.2008.01.002

@article{eb9a3b856ce24f72bcacff4779b8320a,

title = "Lifetimes of intruder states in 186Pb, 188Pb and 194Po",

abstract = "Lifetimes of prolate intruder states in 186Pb and 188Pb and oblate intruder states in 194Po have been determined through recoil distance Doppler-shift lifetime measurements. Deformation parameters of | β2 | = 0.29 (5) and | β2 | = 0.17(3) have been extracted from experimental B (E 2) values for the prolate and the oblate bands, respectively. The present study addresses the phenomenon of shape coexistence typical for the nuclei near Z = 82 and N = 104, providing information on configuration mixing of intrinsic structures of the nuclei of interest. The results are compared with the available lifetime data and theoretical results for neutron-deficient Po, Pb, Hg and Pt nuclei. Furthermore, new self-consistent mean-field calculations have been carried out for 194Po.",

keywords = "B(E2), Cd(Kr, 3n), E, E = 340 - 375 MeV, Nuclear reactions, Pb, Pd, Po, deduced, deformation parameters, lifetimes for intruder states using the recoil distance Doppler-shift method, measured, quadrupole moment, γ, γγ-coin",

author = "T. Grahn and A. Dewald and O. M{\"o}ller and R. Julin and Beausang, {C. W.} and S. Christen and Darby, {I. G.} and S. Eeckhaudt and Greenlees, {P. T.} and A. G{\"o}rgen and K. Helariutta and J. Jolie and P. Jones and S. Juutinen and H. Kettunen and T. Kr{\"o}ll and R. Kr{\"u}cken and Coz, {Y. Le} and M. Leino and Lepp{\"a}nen, {A. P.} and P. Maierbeck and Meyer, {D. A.} and B. Melon and P. Nieminen and M. Nyman and Page, {R. D.} and J. Pakarinen and P. Petkov and P. Rahkila and B. Saha and M. Sandzelius and J. Sar{\'e}n and C. Scholey and J. Uusitalo and M. Bender and Heenen, {P. H.}",

year = "2008",

month = mar,

day = "15",

doi = "10.1016/j.nuclphysa.2008.01.002",

language = "English",

volume = "801",

pages = "83--100",

journal = "Nuclear Physics A",

issn = "0375-9474",

publisher = "Elsevier B.V.",

number = "3-4",

}

Grahn, T, Dewald, A, Möller, O, Julin, R, Beausang, CW, Christen, S, Darby, IG, Eeckhaudt, S, Greenlees, PT, Görgen, A, Helariutta, K, Jolie, J, Jones, P, Juutinen, S, Kettunen, H, Kröll, T, Krücken, R, Coz, YL, Leino, M, Leppänen, AP, Maierbeck, P, Meyer, DA, Melon, B, Nieminen, P, Nyman, M, Page, RD, Pakarinen, J, Petkov, P, Rahkila, P, Saha, B, Sandzelius, M, Sarén, J, Scholey, C, Uusitalo, J, Bender, M & Heenen, PH 2008, 'Lifetimes of intruder states in ¹⁸⁶Pb, ¹⁸⁸Pb and ¹⁹⁴Po', Nuclear Physics A, vol. 801, no. 3-4, pp. 83-100. https://doi.org/10.1016/j.nuclphysa.2008.01.002

TY - JOUR

T1 - Lifetimes of intruder states in 186Pb, 188Pb and 194Po

AU - Grahn, T.

AU - Dewald, A.

AU - Möller, O.

AU - Julin, R.

AU - Beausang, C. W.

AU - Christen, S.

AU - Darby, I. G.

AU - Eeckhaudt, S.

AU - Greenlees, P. T.

AU - Görgen, A.

AU - Helariutta, K.

AU - Jolie, J.

AU - Jones, P.

AU - Juutinen, S.

AU - Kettunen, H.

AU - Kröll, T.

AU - Krücken, R.

AU - Coz, Y. Le

AU - Leino, M.

AU - Leppänen, A. P.

AU - Maierbeck, P.

AU - Meyer, D. A.

AU - Melon, B.

AU - Nieminen, P.

AU - Nyman, M.

AU - Page, R. D.

AU - Pakarinen, J.

AU - Petkov, P.

AU - Rahkila, P.

AU - Saha, B.

AU - Sandzelius, M.

AU - Sarén, J.

AU - Scholey, C.

AU - Uusitalo, J.

AU - Bender, M.

AU - Heenen, P. H.

PY - 2008/3/15

Y1 - 2008/3/15

N2 - Lifetimes of prolate intruder states in 186Pb and 188Pb and oblate intruder states in 194Po have been determined through recoil distance Doppler-shift lifetime measurements. Deformation parameters of | β2 | = 0.29 (5) and | β2 | = 0.17(3) have been extracted from experimental B (E 2) values for the prolate and the oblate bands, respectively. The present study addresses the phenomenon of shape coexistence typical for the nuclei near Z = 82 and N = 104, providing information on configuration mixing of intrinsic structures of the nuclei of interest. The results are compared with the available lifetime data and theoretical results for neutron-deficient Po, Pb, Hg and Pt nuclei. Furthermore, new self-consistent mean-field calculations have been carried out for 194Po.

AB - Lifetimes of prolate intruder states in 186Pb and 188Pb and oblate intruder states in 194Po have been determined through recoil distance Doppler-shift lifetime measurements. Deformation parameters of | β2 | = 0.29 (5) and | β2 | = 0.17(3) have been extracted from experimental B (E 2) values for the prolate and the oblate bands, respectively. The present study addresses the phenomenon of shape coexistence typical for the nuclei near Z = 82 and N = 104, providing information on configuration mixing of intrinsic structures of the nuclei of interest. The results are compared with the available lifetime data and theoretical results for neutron-deficient Po, Pb, Hg and Pt nuclei. Furthermore, new self-consistent mean-field calculations have been carried out for 194Po.

KW - B(E2)

KW - Cd(Kr, 3n)

KW - E

KW - E = 340 - 375 MeV

KW - Nuclear reactions

KW - Pb

KW - Pd

KW - Po

KW - deduced

KW - deformation parameters

KW - lifetimes for intruder states using the recoil distance Doppler-shift method

KW - measured

KW - quadrupole moment

KW - γ

KW - γγ-coin

UR - http://www.scopus.com/inward/record.url?scp=39249085539&partnerID=8YFLogxK

U2 - 10.1016/j.nuclphysa.2008.01.002

DO - 10.1016/j.nuclphysa.2008.01.002

M3 - Article

SN - 0375-9474

VL - 801

SP - 83

EP - 100

JO - Nuclear Physics A

JF - Nuclear Physics A

IS - 3-4

ER -

Lifetimes of intruder states in ¹⁸⁶Pb, ¹⁸⁸Pb and ¹⁹⁴Po

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