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| 1 | Simulation and measurement of the resonant Schottky pickup显示文摘A resonant Schottky pickup with high sensitivity, built by GSI, will be used for nuclear mass and lifetime measurement at CSRe. The basic concepts of Schottky noise signals, a brief introduction of the geometry of the detector, the transient response of the detector, and MAFIA simulated and perturbation measured results of characteristics are presented in this paper. The resonant frequency of the pickup is about 243 MHz and can be slightly changed at a range of 3 MHz. The unloaded quality factor is about 1072 and the shunt impedance is 76 k . The measured results of the characteristics are in agreement with the MAFIA simulations. | 臧永东 武军霞 赵铁成 张生虎 毛瑞士 徐瑚珊 孙志宇 马新文 涂小林 肖国青 F.Nolden P.Hülsmann Yu.A.Litvinov C.Peschke P.Petri M.S.Sanjari M.Steck | 2011 | Chinese Physics C2011，35，12： | 0 |
| 2 | 2-5 Data Analysis of the Schottky Mass Measurements of 152Sm Fragments显示文摘Precision mass measurements of neutron-deficient 152Sm projectile fragments were conducted in 2005 at theFRS-ESR facility at GSI Helmholtz centre[1, 2], employing the time-resolved Schottky Mass Spectrometry[3]. A newmass evaluation method has been developed in the data analysis. The systematic error in the mass determinationwas significantly reduced with the new method[4].Exotic nuclei, produced by projectile fragmentation of a 615 AMeV 152Sm primary beam in a 4.009 g/cm2beryllium target, were transmitted and B-separated by the fragment separator FRS and then injected and storedin the experimental storage ring ESR. In ESR the electron-cooling process was continuously applied to the storedions. To first order approximation, the revolution-frequencies (f) of the stored ions in the ESR are related to theirvelocities (v) and mass-to-charge ratios (m=q) of the ions in rest frame: | Yan Xinliang K.Blaum Yu.A.Litvinov F.Bosch C.Brandau Chen Lixin H.Geissel R.Knobel C.Kozhuharov J.Kurcewicz S.A.Litvinov G.Munzenberg C.Nociforo F.Nolden W.R.Pla M.S.Sanjari C.Scheidenberger M.Steck Sun Baohua Tu Xiaolin Wang Meng H.Weick N.Winckler M.Winkler Xu Hushan Zhang Yuhu Zhou Xiaohong | 2014 | IMP & HIRFL Annual Report2014，，1： | 0 |
| 3 | Two-electron QED Studies for Helium-like Uranium显示文摘The study of structure of few-electron heavy ions is of important interest due to the strong field effects. Helium-like ions are the simplest atomic multi-body systems. A considerable improved precision has been made in both theory and experiments recently. The experiment exploits the radiative recombination (RR) transitions into the vacant 1 s shell of bare and H-like ions. In this process, the energy carried by the emitted photon is the energy difference between the initial and final electron state, hω=Ekin+EB. For bare | MaXinwen Th.Stoehlker A.Gumberidze H.F.Beyer G.Bednarz F.Bosch CaiXiaohong S.Fritzsche S.Hagmann C.Kozhuharov O.Klepper D.Liesen P.H.Mokler D.Sierpowski Z.Stachura M.Steck A.Surzhykov S.Toleikis A.Warczak Y.Zou | 2002 | 近代物理研究所和兰州重离子加速器实验室年报:英文版2002，，1： | 0 |
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