Precision isochronous mass measurements at the storage ring CSRe in Lanzhou

書誌事項

公開日
2011-10
権利情報
  • https://www.elsevier.com/tdm/userlicense/1.0/
  • https://www.elsevier.com/legal/tdmrep-license
DOI
  • 10.1016/j.nima.2011.07.018
公開者
Elsevier BV

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説明

Abstract Direct mass measurements of 78 Kr projectile fragments have been performed in the recently commissioned storage ring CSRe employing the isochronous mass spectrometry method. A new data-analysis technique has been developed to correct the drifts in the revolution frequencies caused by instabilities of the magnetic fields in the CSRe, thus yielding a mass resolving power of R = m / Δ m ≈ 1.7 × 10 5 (sigma). Masses for 45 V, 47 Cr, 49 Mn and 51 Fe nuclei are determined with a relative mass precision of δ m / m ≈ 2 × 10 − 7 (sigma) which is an improvement by a factor of ∼ 2 compared to the literature values.

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