Deutsch
 
Benutzerhandbuch Datenschutzhinweis Impressum Kontakt
  DetailsucheBrowse

Datensatz

DATENSATZ AKTIONENEXPORT

Freigegeben

Zeitschriftenartikel

Reduced transition probabilities for the gamma decay of the 7.8 eV isomer in 229Th

MPG-Autoren
/persons/resource/persons211223

Minkov,  Nikolay
Institute of Nuclear Research and Nuclear Energy, Bulgarian Academy of Sciences, Tzarigrad Road 72, BG-1784 Sofia, Bulgaria;
Division Prof. Dr. Christoph H. Keitel, MPI for Nuclear Physics, Max Planck Society;

/persons/resource/persons30873

Pálffy,  Adriana
Division Prof. Dr. Christoph H. Keitel, MPI for Nuclear Physics, Max Planck Society;

Externe Ressourcen
Volltexte (frei zugänglich)

1704.07919.pdf
(Preprint), 381KB

Ergänzendes Material (frei zugänglich)
Es sind keine frei zugänglichen Ergänzenden Materialien verfügbar
Zitation

Minkov, N., & Pálffy, A. (2017). Reduced transition probabilities for the gamma decay of the 7.8 eV isomer in 229Th. Physical Review Letters, 118(21): 212501. doi:10.1103/PhysRevLett.118.212501.


Zitierlink: http://hdl.handle.net/11858/00-001M-0000-002E-0682-4
Zusammenfassung
The reduced magnetic dipole and electric quadrupole transition probabilities for the radiative decay of the 229Th 7.8 eV isomer to the ground state are predicted within a detailed nuclear-structure model approach. We show that the presence and decay of this isomer can only be accounted for by the Coriolis mixing emerging from a remarkably fine interplay between the coherent quadrupole-octupole motion of the nuclear core and the single-nucleon motion within a reflection-asymmetric deformed potential. We find that the magnetic dipole transition probability which determines the radiative lifetime of the isomer is considerably smaller than presently estimated. The so-far disregarded electric quadrupole component may have non-negligible contributions to the internal conversion channel. These findings support new directions in the experimental search of the 229Th transition frequency for the development of a future nuclear frequency standard.