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Opportunities for production and property research of neutron-rich nuclei around N=126 at HIAF
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作者 Shao-Bo Ma li-na sheng +9 位作者 Xue-Heng Zhang Shi-Tao Wang Kai-Long Wang Chun-Wang Ma Hool-Jin Ong Zhi-Yu Sun Shu-Wen Tang Yu-Hong Yu Xin-Tong Du Xiao-Bao Wei 《Nuclear Science and Techniques》 SCIE EI CAS CSCD 2024年第6期101-113,共13页
The study of nuclide production and its properties in the N=126 neutron-rich region is prevalent in nuclear physics and astrophysics research.The upcoming High-energy FRagment Separator(HFRS)at the High-Intensity heav... The study of nuclide production and its properties in the N=126 neutron-rich region is prevalent in nuclear physics and astrophysics research.The upcoming High-energy FRagment Separator(HFRS)at the High-Intensity heavy-ion Accelerator Facility(HIAF),an in-flight separator at relativistic energies,is characterized by high beam intensity,large ion-optical acceptance,high magnetic rigidity,and high momentum resolution power.This provides an opportunity to study the production and properties of neutron-rich nuclei around N=126.In this paper,an experimental scheme is proposed to produce neutron-rich nuclei around N=126 and simultaneously measure their mass and lifetime based on the HFRS separator;the feasibility of this scheme is evaluated through simulations.The results show that under the high-resolution optical mode,many new neutron-rich nuclei approaching the r-process abundance peak around A=195 can be produced for the first time,and many nuclei with unknown masses and lifetimes can be produced with high statistics.Using the time-of-flight corrected by the measured dispersive position and energy loss information,the cocktails produced from 208 Pb fragmentation can be unambiguously identified.Moreover,the masses of some neutron-rich nuclei near N=126 can be measured with high precision using the time-of-flight magnetic rigidity technique.This indicates that the HIAF-HFRS facility has the potential for the production and property research of neutron-rich nuclei around N=126,which is of great significance for expanding the chart of nuclides,developing nuclear theories,and understanding the origin of heavy elements in the universe. 展开更多
关键词 HFRS FRAGMENTATION Neutron-rich nuclei around N=126 Mass measurement LIFETIME
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Electrostatic-lenses position-sensitive TOF MCP detector for beam diagnostics and new scheme for mass measurements at HIAF 被引量:10
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作者 Jun-Hao Liu Zhuang Ge +7 位作者 Qian Wang Geng Wang li-na sheng Wen-Wen Ge Xing Xu Peng Shuai Qi Zeng Bo Wu 《Nuclear Science and Techniques》 SCIE CAS CSCD 2019年第10期63-73,共11页
A foil–microchannel plate(MCP)detector,which uses electrostatic lenses and possesses both good position and timing resolutions,has been designed and simulated for beam diagnostics and mass measurements at the next-ge... A foil–microchannel plate(MCP)detector,which uses electrostatic lenses and possesses both good position and timing resolutions,has been designed and simulated for beam diagnostics and mass measurements at the next-generation heavy-ion-beam facility HIAF in China.Characterized by low energy loss and good performances of timing and position measurements,it would be located at focal planes in fragment separator HFRS for position monitoring,beam turning,Bq measurement,and trajectory reconstruction.Moreover,it will benefit the building-up of a magnetic-rigidity–energy-loss–time-offlight(BqDETOF)method at HFRS for high-precision in-flight particle identification of radioactive isotope beams on an event-by-event basis.Most importantly,the detector can be utilized for in-ring TOF and position measurements,beam-line TOF measurements at two achromatic foci,and position measurements at a dispersive focus of HFRS,thus making it possible to use two complementary mass measurement methods[isochronous mass spectrometry at the storage ring SRing and magnetic-rigidity–time-of-flight(BqTOF)at the beam-line HFRS]in one single experimental run. 展开更多
关键词 MICROCHANNEL plate ELECTROSTATIC lenses DETECTOR POSITION-SENSITIVE TIME-OF-FLIGHT Mass measurements HIAF
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Towards the full realization of the RIBLL2 beam line at the HIRFL-CSR complex 被引量:3
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作者 Bao-Hua Sun Jian-Wei Zhao +31 位作者 Xue-Heng Zhang li-na sheng Zhi-Yu Sun Isao Tanihata Satoru Terashima Yong Zheng Li-Hua Zhu Li-Min Duan Liu-Chun He Rong-Jiang Hu Guang-Shuai Li Wen-Jian Lin Wei-Ping Lin Chuan-Ye Liu Zhong Liu Chen-Gui Lu Xin-Wen Ma Li-Jun Mao Yi Tian Feng Wang Meng Wang Shi-Tao Wang Jia-Wen Xia Xiao-Dong Xu Hu-Shan Xu Zhi-Guo Xu Jian-Cheng Yang Da-Yu Yin You-Jin Yuan Wen-Long Zhan Yu-Hu Zhang Xiao-Hong Zhou 《Science Bulletin》 SCIE EI CSCD 2018年第2期78-80,共3页
More than 99%of the mass in the visible universe—the material that makes up ourselves,our planet,stars—is in the atomic nucleus.Although the matter has existed for billions of years,only over the past few decades ha... More than 99%of the mass in the visible universe—the material that makes up ourselves,our planet,stars—is in the atomic nucleus.Although the matter has existed for billions of years,only over the past few decades have we had the tools and the knowledge necessary to get a basic understanding of the structure and dynamic of nuclei.Nuclear physicists around the world have made tremendous strides by initiating a broad range of key 展开更多
关键词 HIRFL-CSR 横梁 建筑群 排队 原子核 物理学家 试验性 世界
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