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Liang S, Lu Q, Wang X, Yang Y, Yao K, Shen Y, Wei B, Xiao J, Chen S, Zhou P, Sun W, Zhang Y, Huang Y, Guan H, Tong X, Li C, Zou Y, Shi T, Gao K. A low-energy compact Shanghai-Wuhan electron beam ion trap for extraction of highly charged ions. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2019; 90:093301. [PMID: 31575235 DOI: 10.1063/1.5112154] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2019] [Accepted: 08/13/2019] [Indexed: 06/10/2023]
Abstract
A low-energy, compact, and superconducting electron beam ion trap (the Shanghai-Wuhan EBIT or SW-EBIT) for extraction of highly charged ions is presented. The magnetic field in the central drift tube of the SW-EBIT is approximately 0.21 T produced by a pair of high-temperature superconducting coils. The electron-beam energy of the SW-EBIT is in the range of 30-4000 eV, and the maximum electron-beam current is up to 9 mA. Acting as a source of highly charged ions, the ion-beam optics for extraction is integrated, including an ion extractor and an einzel lens. A Wien filter is then used to measure the charge-state distribution of the extracted ions. In this work, the tungsten ions below the charge state of 15 have been produced, extracted, and analyzed. The charge-state distributions and spectra in the range of 530-580 nm of tungsten ions have been measured simultaneously with the electron-beam energy of 279 eV and 300 eV, which preliminarily indicates that the 549.9 nm line comes from W14+.
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Affiliation(s)
- Shiyong Liang
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071, China
| | - Qifeng Lu
- Institute of Modern Physics, Department of Nuclear Science and Technology, Fudan University, Shanghai 200433, China
| | - Xincheng Wang
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Yang Yang
- Institute of Modern Physics, Department of Nuclear Science and Technology, Fudan University, Shanghai 200433, China
| | - Ke Yao
- Institute of Modern Physics, Department of Nuclear Science and Technology, Fudan University, Shanghai 200433, China
| | - Yang Shen
- Institute of Modern Physics, Department of Nuclear Science and Technology, Fudan University, Shanghai 200433, China
| | - Baoren Wei
- Institute of Modern Physics, Department of Nuclear Science and Technology, Fudan University, Shanghai 200433, China
| | - Jun Xiao
- Institute of Modern Physics, Department of Nuclear Science and Technology, Fudan University, Shanghai 200433, China
| | - Shaolong Chen
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071, China
| | - Pengpeng Zhou
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071, China
| | - Wei Sun
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071, China
| | - Yonghui Zhang
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071, China
| | - Yao Huang
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071, China
| | - Hua Guan
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071, China
| | - Xin Tong
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071, China
| | - Chengbin Li
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071, China
| | - Yaming Zou
- Institute of Modern Physics, Department of Nuclear Science and Technology, Fudan University, Shanghai 200433, China
| | - Tingyun Shi
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071, China
| | - Kelin Gao
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071, China
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Nakamura N, Kikuchi H, Sakaue HA, Watanabe T. Compact electron beam ion trap for spectroscopy of moderate charge state ions. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2008; 79:063104. [PMID: 18601394 DOI: 10.1063/1.2939393] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
A compact electron beam ion trap (EBIT) has been constructed for spectroscopic studies of moderate charge state ions. The electron beam energy range of the present EBIT is 100-1000 eV, for which it is rather difficult to operate an ordinary EBIT which used to be designed for operation with higher electron energy (~10 keV or more). To cut down the running costs, a superconducting wire with a high critical temperature is used for the central magnet so that it can be operated without liquid helium. The performance of the compact EBIT has been investigated through visible spectroscopy of highly charged krypton and iron ions.
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Affiliation(s)
- Nobuyuki Nakamura
- Institute for Laser Science, The University of Electro-Communications, Chofu, Tokyo, Japan.
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Brown GV, Beiersdorfer P, Chen H, Scofield JH, Boyce KR, Kelley RL, Kilbourne CA, Porter FS, Gu MF, Kahn SM, Szymkowiak AE. Energy-dependent excitation cross section measurements of the diagnostic lines of Fe XVII. PHYSICAL REVIEW LETTERS 2006; 96:253201. [PMID: 16907303 DOI: 10.1103/physrevlett.96.253201] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2005] [Indexed: 05/11/2023]
Abstract
By implementing a large-area, gain-stabilized microcalorimeter array on an electron beam ion trap, the electron-impact excitation cross sections for the dominant x-ray lines in the Fe XVII spectrum have been measured as a function of electron energy establishing a benchmark for atomic calculations. The results show that the calculations consistently predict the cross section of the resonance line to be significantly larger than measured. The lower cross section accounts for several problems found when modeling solar and astrophysical Fe XVII spectra.
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Affiliation(s)
- G V Brown
- University of California Lawrence Livermore National Laboratory, Livermore, California 94550, USA
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Takács E, Meyer ES, Gillaspy JD, Roberts JR, Chantler CT, Hudson LT, Deslattes RD, Brown CM, Laming JM, Dubau J, Inal MK. Polarization measurements on a magnetic quadrupole line in Ne-like barium. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1996; 54:1342-1350. [PMID: 9913599 DOI: 10.1103/physreva.54.1342] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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Rice JE, Fournier KB, Terry JL, Graf MA, Finkenthal M, Marmar ES, Goldstein WH. X-ray observations of 2l-nl' transitions from Zr, Nb, Mo, and Pd in near-neonlike charge states. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1996; 53:3953-3962. [PMID: 9913357 DOI: 10.1103/physreva.53.3953] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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Finkenthal M, Lippmann S, Huang LK, Zwicker A, Moos HW, Goldstein WH, Osterheld AL. O-shell emission of heavy atoms in an optically thin tokamak plasma. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1992; 45:5846-5853. [PMID: 9907686 DOI: 10.1103/physreva.45.5846] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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Schneider D, Clark MW, Penetrante BM, McDonald J, DeWitt D, Bardsley JN. Production of high-charge-state thorium and uranium ions in an electron-beam ion trap. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1991; 44:3119-3124. [PMID: 9906310 DOI: 10.1103/physreva.44.3119] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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Hutton R, Beiersdorfer P, Osterheld AL, Marrs RE, Schneider MB. X-ray spectra of F-like, O-like, and N-like barium from an electron-beam ion trap. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1991; 44:1836-1842. [PMID: 9906152 DOI: 10.1103/physreva.44.1836] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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