Low-lying isovector 2(+) valence-shell excitations of Po-212

D. Kocheva, G. Rainovski, J. Jolie, N. Pietralla, C. Stahl, P. Petkov, A. Blazhev, A. Hennig, A. Astier, Th. Braunroth, M. L. Cortes, A. Dewald, M. Djongolov, C. Fransen, K. Gladnishki, V. Karayonchev, J. Litzinger, C. Mueller-Gatermann, M. Scheck, Ph. Scholz & 6 others R. Stegmann, P. Thoele, V. Werner, W. Witt, D. Woelk, P. Van Isacker

Research output: Contribution to journalArticle

Abstract

We present the results from an experiment dedicated to search for quadrupole-collective isovector valence-shell excitations, states with so-called mixed proton-neutron symmetry (MSS), of 212Po. This nucleus was studied in an
α-transfer reaction. The lifetimes of two short-lived excited states, candidates for the one-phonon MSS, were determined by utilizing the Doppler shift attenuation method. The experimental results are in qualitative agreement with a simple single-j shell model calculation, which, together with the observed lack of quadrupole collectivity, indicates that the isovector nature of low-lying states is a property of the leading single-particle valence shell configuration.
Original languageEnglish
Article number011303
JournalPhysical Review C
Volume93
Issue number1
DOIs
Publication statusPublished - 19 Jan 2016

Keywords

  • Nuclear-data sheets
  • collective modes
  • mixed-symmetry
  • states
  • spectroscopy
  • beam

Cite this

Kocheva, D., Rainovski, G., Jolie, J., Pietralla, N., Stahl, C., Petkov, P., ... Van Isacker, P. (2016). Low-lying isovector 2(+) valence-shell excitations of Po-212. Physical Review C, 93(1), [011303]. https://doi.org/10.1103/PhysRevC.93.011303
Kocheva, D. ; Rainovski, G. ; Jolie, J. ; Pietralla, N. ; Stahl, C. ; Petkov, P. ; Blazhev, A. ; Hennig, A. ; Astier, A. ; Braunroth, Th. ; Cortes, M. L. ; Dewald, A. ; Djongolov, M. ; Fransen, C. ; Gladnishki, K. ; Karayonchev, V. ; Litzinger, J. ; Mueller-Gatermann, C. ; Scheck, M. ; Scholz, Ph. ; Stegmann, R. ; Thoele, P. ; Werner, V. ; Witt, W. ; Woelk, D. ; Van Isacker, P. / Low-lying isovector 2(+) valence-shell excitations of Po-212. In: Physical Review C. 2016 ; Vol. 93, No. 1.
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abstract = "We present the results from an experiment dedicated to search for quadrupole-collective isovector valence-shell excitations, states with so-called mixed proton-neutron symmetry (MSS), of 212Po. This nucleus was studied in an α-transfer reaction. The lifetimes of two short-lived excited states, candidates for the one-phonon MSS, were determined by utilizing the Doppler shift attenuation method. The experimental results are in qualitative agreement with a simple single-j shell model calculation, which, together with the observed lack of quadrupole collectivity, indicates that the isovector nature of low-lying states is a property of the leading single-particle valence shell configuration.",
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Kocheva, D, Rainovski, G, Jolie, J, Pietralla, N, Stahl, C, Petkov, P, Blazhev, A, Hennig, A, Astier, A, Braunroth, T, Cortes, ML, Dewald, A, Djongolov, M, Fransen, C, Gladnishki, K, Karayonchev, V, Litzinger, J, Mueller-Gatermann, C, Scheck, M, Scholz, P, Stegmann, R, Thoele, P, Werner, V, Witt, W, Woelk, D & Van Isacker, P 2016, 'Low-lying isovector 2(+) valence-shell excitations of Po-212' Physical Review C, vol. 93, no. 1, 011303. https://doi.org/10.1103/PhysRevC.93.011303

Low-lying isovector 2(+) valence-shell excitations of Po-212. / Kocheva, D.; Rainovski, G.; Jolie, J.; Pietralla, N.; Stahl, C.; Petkov, P.; Blazhev, A.; Hennig, A.; Astier, A.; Braunroth, Th.; Cortes, M. L.; Dewald, A.; Djongolov, M.; Fransen, C.; Gladnishki, K.; Karayonchev, V.; Litzinger, J.; Mueller-Gatermann, C.; Scheck, M.; Scholz, Ph.; Stegmann, R.; Thoele, P.; Werner, V.; Witt, W.; Woelk, D.; Van Isacker, P.

In: Physical Review C, Vol. 93, No. 1, 011303, 19.01.2016.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Low-lying isovector 2(+) valence-shell excitations of Po-212

AU - Kocheva, D.

AU - Rainovski, G.

AU - Jolie, J.

AU - Pietralla, N.

AU - Stahl, C.

AU - Petkov, P.

AU - Blazhev, A.

AU - Hennig, A.

AU - Astier, A.

AU - Braunroth, Th.

AU - Cortes, M. L.

AU - Dewald, A.

AU - Djongolov, M.

AU - Fransen, C.

AU - Gladnishki, K.

AU - Karayonchev, V.

AU - Litzinger, J.

AU - Mueller-Gatermann, C.

AU - Scheck, M.

AU - Scholz, Ph.

AU - Stegmann, R.

AU - Thoele, P.

AU - Werner, V.

AU - Witt, W.

AU - Woelk, D.

AU - Van Isacker, P.

N1 - Keywords from WoS

PY - 2016/1/19

Y1 - 2016/1/19

N2 - We present the results from an experiment dedicated to search for quadrupole-collective isovector valence-shell excitations, states with so-called mixed proton-neutron symmetry (MSS), of 212Po. This nucleus was studied in an α-transfer reaction. The lifetimes of two short-lived excited states, candidates for the one-phonon MSS, were determined by utilizing the Doppler shift attenuation method. The experimental results are in qualitative agreement with a simple single-j shell model calculation, which, together with the observed lack of quadrupole collectivity, indicates that the isovector nature of low-lying states is a property of the leading single-particle valence shell configuration.

AB - We present the results from an experiment dedicated to search for quadrupole-collective isovector valence-shell excitations, states with so-called mixed proton-neutron symmetry (MSS), of 212Po. This nucleus was studied in an α-transfer reaction. The lifetimes of two short-lived excited states, candidates for the one-phonon MSS, were determined by utilizing the Doppler shift attenuation method. The experimental results are in qualitative agreement with a simple single-j shell model calculation, which, together with the observed lack of quadrupole collectivity, indicates that the isovector nature of low-lying states is a property of the leading single-particle valence shell configuration.

KW - Nuclear-data sheets

KW - collective modes

KW - mixed-symmetry

KW - states

KW - spectroscopy

KW - beam

U2 - 10.1103/PhysRevC.93.011303

DO - 10.1103/PhysRevC.93.011303

M3 - Article

VL - 93

JO - Physical Review C

JF - Physical Review C

SN - 2469-9985

IS - 1

M1 - 011303

ER -

Kocheva D, Rainovski G, Jolie J, Pietralla N, Stahl C, Petkov P et al. Low-lying isovector 2(+) valence-shell excitations of Po-212. Physical Review C. 2016 Jan 19;93(1). 011303. https://doi.org/10.1103/PhysRevC.93.011303