First application of combined isochronous and Schottky mass spectrometry: Half-lives of fully ionized 49Cr24+ and 53Fe26+ atoms

Abstract

Lifetime measurements of b -decaying highly charged ions have been performed in the storage ring CSRe by applying the isochronous Schottky mass spectrometry. The fully ionized 49Cr and 53Fe ions were produced in projectile fragmentation of 58Ni primary beam and were stored in the CSRe tuned into the isochronous ion-optical mode. The new resonant Schottky detector was applied to monitor the intensities of stored uncooled 49Cr24+ and 53Fe26+ ions. The extracted half-lives T1/2(49Cr24+) = 44.0(27) min and T1/2(53Fe26+) = 8.47(19) min are in excellent agreement with the literature half-life values corrected for the disabled electron capture branchings. This is an important proof-of-principle step towards realizing the simultaneous mass and lifetime measurements on exotic nuclei at the future storage ring facilities.

References in corpus (6)

• Observation of Non-Exponential Orbital Electron Capture Decays of Hydrogen-Like ${}^{140}$Pr and ${}^{142}$Pm Ions
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Cited by in corpus (6)

• Heavy-Ion Storage Rings and Their Use in Precision Experiments with Highly Charged Ions
• Denoising scheme based on singular-value decomposition for one-dimensional spectra and its application in precision storage-ring mass spectrometry
• Nuclear Mass Measurements With Radioactive Ion Beams
• Schottky detection techniques for ultra-rare short-lived ions in heavy ion storage rings
• A novel method of half-life determination for highly charged ions based on isochronous mass spectrometry
• Measurement of the Isolated Nuclear Two-Photon Decay in ${}^{72}\mathrm{Ge}$