Stuttgart 2012 – wissenschaftliches Programm

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MS: Fachverband Massenspektrometrie

MS 4: Ion Storage Rings

MS 4.4: Vortrag

Dienstag, 13. März 2012, 11:30–11:45, V57.06

Direct mass measurements of short-lived proton-rich nuclides at CSRe — •X.L. Yan^1,2, X.L. Tu^1,2, M. Wang¹, Yu.A. Litvinov^1,3,4, Y.H. Zhang¹, H.S. Xu¹, Z.Y. Sun¹, G. Audi⁵, K. Blaum³, C.M. Du^1,2, W.X. Huang¹, Z.G. Hu¹, P. Geng^1,2, S.L. Jin^1,2, L.X. Liu^1,2, Y. Liu¹, B. Mei¹, R.S. Mao¹, X.W. Ma¹, H. Suzuki⁶, P. Shuai⁷, Y. Sun^1,8, S.W. Tang^1,2, J.S Wang¹, S.T Wang^1,2, G.Q. Xiao¹, X. Xu^1,2, J.W Xia¹, J.C. Yang¹, R.P. Ye^1,2, T. Yamaguchi⁹, Y.J. Yuan¹, Y. Yamaguchi¹⁰, Y.D. Zang^1,2, H.W. Zhao¹, T.C. Zhao¹, X.Y. Zhang¹, X.H Zhou¹, and W.L Zhan¹ — ¹IMPCAS, China — ²GUCAS, China — ³MPIK, Germany — ⁴GSI, Germany — ⁵CSNSM-IN2P3-CNRS, Université de Paris Sud, France — ⁶Uni. of Tsukuba, Japan — ⁷USTC, China — ⁸SJTU, China — ⁹Saitama Uni., Japan — ¹⁰RIKEN, Japan

Masses of A=2Z−1 proton-rich nuclides were measured with the experimental cooler storage ring CSRe in Lanzhou by employing the isochronous mass spectrometry (IMS) method. The short-lived proton-rich nuclides were produced via ⁷⁸Kr projectile fragmentation, separated in the radioactive beam line RIBLL2 and then stored in CSRe. A typical mass resolving power of R=m/Δ m≈ 1.7· 10⁵ was achieved. After the improvement of the stability of CSRe dipole magnet power supplies, a new measurement with ⁵⁸Ni projectile fragments was carried out. The data analysis methods for both experiments will be presented.