Low collectivity of the 21+ state of Po212 | Zendy

D. Kocheva | Zendy; G. Rainovski | Zendy; J. Jolie | Zendy; N. Pietralla | Zendy; A. Blazhev | Zendy; Robert A. Altenkirch | Zendy; S. M. Razaullah Ansari | Zendy; A. Astier | Zendy; M. Bast | Zendy; M. Beckers | Zendy; T. Braunroth | Zendy; M. Cappellazzo | Zendy; Α. Dewald | Zendy; F. Diel | Zendy; M. Djongolov | Zendy; C. Fransen | Zendy; K. Gladnishki | Zendy; A. Goldkuhle | Zendy; Andreas Hennig | Zendy; V. Karayonchev | Zendy; J. M. Keatings | Zendy; E.-E. Kluge | Zendy; Th. Kröll | Zendy; J. Litzinger | Zendy; K. Moschner | Zendy; C. Müller-Gatermann | Zendy; P. Petkov | Zendy; M. Scheck | Zendy; Philipp Scholz | Zendy; T. Schmidt | Zendy; P. Spagnoletti | Zendy; C. Stahl | Zendy; R. Stegmann | Zendy; A. Stolz | Zendy; A. Vogt | Zendy; N. Warr | Zendy; V. Werner | Zendy; D. Wölk | Zendy; J. C. Zamora | Zendy; K. O. Zell | Zendy; V. Yu. Ponomarev | Zendy; P. Van Isacker | Zendy

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Low collectivity of the 21+ state of Po212

Author(s) -

D. Kocheva,

G. Rainovski,

J. Jolie,

N. Pietralla,

A. Blazhev,

Robert A. Altenkirch,

S. M. Razaullah Ansari,

A. Astier,

M. Bast,

M. Beckers,

T. Braunroth,

M. Cappellazzo,

Α. Dewald,

F. Diel,

M. Djongolov,

C. Fransen,

K. Gladnishki,

A. Goldkuhle,

Andreas Hennig,

V. Karayonchev,

J. M. Keatings,

E.-E. Kluge,

Th. Kröll,

J. Litzinger,

K. Moschner,

C. Müller-Gatermann,

P. Petkov,

M. Scheck,

Philipp Scholz,

T. Schmidt,

P. Spagnoletti,

C. Stahl,

R. Stegmann,

A. Stolz,

A. Vogt,

N. Warr,

V. Werner,

D. Wölk,

J. C. Zamora,

K. O. Zell,

V. Yu. Ponomarev,

P. Van Isacker

Publication year - 2017

Publication title -

physical review. c

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.679

H-Index - 235

eISSN - 2469-9993

pISSN - 2469-9985

DOI - 10.1103/physrevc.96.044305

Subject(s) - physics , spectroscopy , atomic physics , crystallography , analytical chemistry (journal) , quantum mechanics , chemistry , chromatography

International audienceThe lifetime of the $2^+_1$ state of $^{212}$Po was measured in the $^{208}$Pb($^{12}$C,$^{8}$Be)$^{212}$Po transfer reaction by γ -ray spectroscopy employing the recoil distance Doppler shift (RDDS) method. The derived absolute B(E2) value of 2.6(3)W.u. indicates a low collectivity and contradicts previous claims of α-cluster components in the structure of the $2^+_1$ state. It is demonstrated that a consistent description of the properties of the $2^+_1$−$4^+_1$−$6^+_1$−$8^+_1$ sequence in $^{212}$Po cannot be achieved in the framework of a single-j shell-model calculation, either. This puzzle is traced to the properties of the seniority-2 configurations in $^{210}$Pb and $^{210}$Po

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