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A data analysis method for isochronous mass spectrometry using two time-of-flight detectors at CSRe 被引量:1
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作者 徐星 王猛 +19 位作者 帅鹏 陈瑞九 颜鑫亮 张玉虎 原有进 徐瑚珊 周小红 Yuri A.Litvinov Sergey Litvinov 涂小林 陈相成 付超义 葛文文 葛壮 胡雪静 黄文嘉 刘大委 邢元明 曾奇 章卫 《Chinese Physics C》 SCIE CAS CSCD 2015年第10期103-109,共7页
The concept of isochronous mass spectrometry (IMS) applying two time-of-flight (TOF) detectors originated many years ago at GSI. However, the corresponding method for data analysis has never been discussed in deta... The concept of isochronous mass spectrometry (IMS) applying two time-of-flight (TOF) detectors originated many years ago at GSI. However, the corresponding method for data analysis has never been discussed in detail. Recently, two TOF detectors have been installed at CSRe and the new working mode of the ring is under test. In this paper, a data analysis method for this mode is introduced and tested with a series of simulations. The results show that the new IMS method can significantly improve mass resolving power via the additional velocity information of stored ions. This improvement is especially important for nuclides with Lorentz factor γ-value far away from the transition point yt of the storage ring CSRe. 展开更多
关键词 isochronous mass spectrometry exotic nuclei two TOF detectors cooler storage ring SIMULATION
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Direct mass measurements of neutron-rich ^(86)Kr projectile fragments and the persistence of neutron magic number N=32 in Sc isotopes 被引量:2
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作者 徐星 王猛 +31 位作者 张玉虎 徐瑚珊 帅鹏 涂小林 Yuri A.Litvinov 周小红 孙保华 原有进 夏佳文 杨建成 Klaus Blaum 陈瑞九 陈相成 付超义 葛壮 胡正国 黄文嘉 刘大委 蓝乙华 马新文 毛瑞士 T.Uesaka 肖国青 邢元明 T.Yamaguchi Y.Yamaguchi 曾奇 颜鑫亮 赵红卫 赵铁成 章卫 詹文龙 《Chinese Physics C》 SCIE CAS CSCD 2015年第10期24-28,共5页
In this paper, we present direct mass measurements of neutron-rich S6Kr projectile fragments conducted at the HIRFL-CSR facility in Lanzhou by employing the Isochronous Mass Spectrometry (IMS) method. The new mass e... In this paper, we present direct mass measurements of neutron-rich S6Kr projectile fragments conducted at the HIRFL-CSR facility in Lanzhou by employing the Isochronous Mass Spectrometry (IMS) method. The new mass excesses of ^52-54Sc nuclides are determined to be -40492(82), -38928(114), -34654(540) keV, which show a significant increase of binding energy compared to the reported ones in the Atomic Mass Evaluation 2012 (AME12). In particular, ^53Sc and ^54sc are more bound by 0.8 MeV and 1.0 MeV, respectively. The behavior of the two neutron separation energy with neutron numbers indicates a strong sub-shell closure at neutron number N=32 in Sc isotopes. 展开更多
关键词 isochronous mass spectrometry exotic nuclei mass excess new magic number
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