<p>The Time-Differential Recoil In Vacuum (TDRIV) method allows for precise and accurate<InlineEquation ID="IEq1"> <EquationSource Format="TEX">\(g\)</EquationSource> </InlineEquation>-factor measurements of excited states with picosecond lifetimes. Until recently, this technique has mostly been applied on H-like ions and thus has been almost exclusively limited to <i>sd</i>-shell nuclei. A proof-of-principle experiment for applying the TDRIV method on Li-like <InlineEquation ID="IEq2"> <EquationSource Format="TEX">\(^{\varvec{46}}\)</EquationSource> </InlineEquation>Ti ions was accepted to be performed at JYFL, Finland. In preparation for this experiment a dedicated charge-state-distribution (CSD) measurement of Ti ions as a function of beam energy and target material was performed at JYFL to optimize the experimental conditions and maximize the Li-like fraction of ions in the TDRIV experiment. The results obtained from this CSD measurement were compared to the predictions of the Schiwietz and Grande model, with a very good overall agreement. This allowed for a more informed decision on the planning and execution of the TDRIV experiment.</p>

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A charge-state-distribution measurement of Ti ions for TDRIV g-factor measurements

  • Konstantin Stoychev,
  • Georgi Georgiev,
  • Joa Ljungvall,
  • Jan Sarén,
  • Juha Uusitalo,
  • Kalle Auranen,
  • Panu Ruotsalainen,
  • Ville Bogdanoff,
  • Andrew D. Briscoe,
  • Andres Illana,
  • Henna Joukainen,
  • Janne Pakarinen,
  • Panu Rahkila,
  • Andrew E. Stuchbery

摘要

The Time-Differential Recoil In Vacuum (TDRIV) method allows for precise and accurate \(g\) -factor measurements of excited states with picosecond lifetimes. Until recently, this technique has mostly been applied on H-like ions and thus has been almost exclusively limited to sd-shell nuclei. A proof-of-principle experiment for applying the TDRIV method on Li-like \(^{\varvec{46}}\) Ti ions was accepted to be performed at JYFL, Finland. In preparation for this experiment a dedicated charge-state-distribution (CSD) measurement of Ti ions as a function of beam energy and target material was performed at JYFL to optimize the experimental conditions and maximize the Li-like fraction of ions in the TDRIV experiment. The results obtained from this CSD measurement were compared to the predictions of the Schiwietz and Grande model, with a very good overall agreement. This allowed for a more informed decision on the planning and execution of the TDRIV experiment.