Author/Authors :
Tu، نويسنده , , X.L. and Wang، نويسنده , , M. and Litvinov، نويسنده , , Yu.A. and Zhang، نويسنده , , Y.H. and Xu، نويسنده , , H.S. and Sun، نويسنده , , Z.Y. and Audi، نويسنده , , G. and Blaum، نويسنده , , K. and Du، نويسنده , , C.M. and Huang، نويسنده , , W.X. and Hu، نويسنده , , Z.G. and Geng، نويسنده , , P. and Jin، نويسنده , , S.L. and Liu، نويسنده , , L.X and Liu، نويسنده , , Y. and Mei، نويسنده , , B. and Mao، نويسنده , , R.S. and Ma، نويسنده , , X.W. and Suzuk، نويسنده ,
Abstract :
Direct mass measurements of 78Kr 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 45V, 47Cr, 49Mn and 51Fe 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.
