English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT

Released

Journal Article

Half-life measurement of short-lived 94m44 Ru44+ using isochronous mass spectrometry

MPS-Authors
/persons/resource/persons187871

Tu,  X. L.
Key Laboratory of High Precision Nuclear Spectroscopy and Center for Nuclear Matter Science, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, People’s Republic of China;
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

Litvinov,  Yu. A.
Key Laboratory of High Precision Nuclear Spectroscopy and Center for Nuclear Matter Science, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, People’s Republic of China;
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;
ExtreMe Matter Institute (EMMI), GSI Helmholtzzentrum für Schwerionenforschung, Planckstraße 1, 64291 Darmstadt, Germany;

/persons/resource/persons30312

Blaum,  Klaus
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

External Resource
No external resources are shared
Fulltext (restricted access)
There are currently no full texts shared for your IP range.
Fulltext (public)
There are no public fulltexts stored in PuRe
Supplementary Material (public)
There is no public supplementary material available
Citation

Zeng, Q., Wang, M., Zhou, X. H., Zhang, Y. H., Tu, X. L., Chen, X. C., et al. (2017). Half-life measurement of short-lived 94m44 Ru44+ using isochronous mass spectrometry. Physical Review C, 96(3): 031303(R). doi:10.1103/PhysRevC.96.031303.


Cite as: https://hdl.handle.net/11858/00-001M-0000-002E-11AE-B
Abstract
Decay of the 8+ isomer in fully stripped ions 94 Ru44+ is observed during its circulation in the experimental Cooler Storage Ring (CSRe) at the Heavy Ion Research Facility in Lanzhou (HIRFL). The 94 Ru44+ ions were produced via projectile fragmentation and stored in CSRe tuned into the isochronous ion-optical mode. The timing signals of the ions, passing through a time-of-flight detector, were consecutively registered and used to determine the variation of revolution time as a function of revolution number. A sudden change of the revolution time at a specific revolution was identified as a fingerprint of the 94 Ru44+ isomer decay. The isomeric half-life was deduced to be 102(17) μs, which agrees well with the theoretical expectation by blocking the internal conversion decay of the isomer. Our work proved the feasibility of studying decays of short-lived isomers in high atomic charge states using the isochronous mass spectrometry. In addition, 94m Ru44+ represents the shortest-lived nuclear state whose mass has ever been measured directly.