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ΔK=0 M1 Excitation Strength of the Well-Deformed Nucleus ^{164}Dy from K Mixing.

Publication ,  Journal Article
Beck, T; Werner, V; Pietralla, N; Bhike, M; Cooper, N; Friman-Gayer, U; Isaak, J; Jolos, RV; Kleemann, J; Krishichayan, ; Papst, O; Tornow, W ...
Published in: Physical review letters
August 2020

The size of a ΔK=0 M1 excitation strength has been determined for the first time in a predominantly axially deformed even-even nucleus. It has been obtained from the observation of a rare K-mixing situation between two close-lying J^{π}=1^{+} states of the nucleus ^{164}Dy with components characterized by intrinsic projection quantum numbers K=0 and K=1. Nuclear resonance fluorescence induced by quasimonochromatic linearly polarized γ-ray beams provided evidence for K mixing of the 1^{+} states at 3159.1(3) and 3173.6(3) keV in excitation energy from their γ-decay branching ratios into the ground-state band. The ΔK=0 transition strength of B(M1;0_{1}^{+}→1_{K=0}^{+})=0.008(1)μ_{N}^{2} was inferred from a mixing analysis of their M1 transition rates into the ground-state band. It is in agreement with predictions from the quasiparticle phonon nuclear model. This determination represents first experimental information on the M1 excitation strength of a nuclear quantum state with a negative R-symmetry quantum number.

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Published In

Physical review letters

DOI

EISSN

1079-7114

ISSN

0031-9007

Publication Date

August 2020

Volume

125

Issue

9

Start / End Page

092501

Related Subject Headings

  • General Physics
  • 51 Physical sciences
  • 49 Mathematical sciences
  • 40 Engineering
  • 09 Engineering
  • 02 Physical Sciences
  • 01 Mathematical Sciences
 

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Beck, T., Werner, V., Pietralla, N., Bhike, M., Cooper, N., Friman-Gayer, U., … Zilges, A. (2020). ΔK=0 M1 Excitation Strength of the Well-Deformed Nucleus ^{164}Dy from K Mixing. Physical Review Letters, 125(9), 092501. https://doi.org/10.1103/physrevlett.125.092501
Beck, T., V. Werner, N. Pietralla, M. Bhike, N. Cooper, U. Friman-Gayer, J. Isaak, et al. “ΔK=0 M1 Excitation Strength of the Well-Deformed Nucleus ^{164}Dy from K Mixing.Physical Review Letters 125, no. 9 (August 2020): 092501. https://doi.org/10.1103/physrevlett.125.092501.
Beck T, Werner V, Pietralla N, Bhike M, Cooper N, Friman-Gayer U, et al. ΔK=0 M1 Excitation Strength of the Well-Deformed Nucleus ^{164}Dy from K Mixing. Physical review letters. 2020 Aug;125(9):092501.
Beck, T., et al. “ΔK=0 M1 Excitation Strength of the Well-Deformed Nucleus ^{164}Dy from K Mixing.Physical Review Letters, vol. 125, no. 9, Aug. 2020, p. 092501. Epmc, doi:10.1103/physrevlett.125.092501.
Beck T, Werner V, Pietralla N, Bhike M, Cooper N, Friman-Gayer U, Isaak J, Jolos RV, Kleemann J, Krishichayan, Papst O, Tornow W, Bernards C, Crider BP, Ilieva RS, Löher B, Mihai C, Naqvi F, Pascu S, Peters EE, Prados-Estevez FM, Ross TJ, Savran D, Vanhoy JR, Zilges A. ΔK=0 M1 Excitation Strength of the Well-Deformed Nucleus ^{164}Dy from K Mixing. Physical review letters. 2020 Aug;125(9):092501.

Published In

Physical review letters

DOI

EISSN

1079-7114

ISSN

0031-9007

Publication Date

August 2020

Volume

125

Issue

9

Start / End Page

092501

Related Subject Headings

  • General Physics
  • 51 Physical sciences
  • 49 Mathematical sciences
  • 40 Engineering
  • 09 Engineering
  • 02 Physical Sciences
  • 01 Mathematical Sciences