Accurate wavelengths of resonance lines in Zn-like heavy ions

2003 ◽  
Vol 81 (7) ◽  
pp. 911-918 ◽  
Author(s):  
S B Utter ◽  
P Beiersdorfer ◽  
E Träbert
Keyword(s):  
Electron Beam ◽  
Heavy Ions ◽  
Ion Trap ◽  
Extreme Ultraviolet ◽  
Electron Beam Ion Trap ◽  
Flat Field ◽  
Improved Accuracy

Using an electron-beam ion trap and a flat-field spectrometer, the extreme ultraviolet resonance lines of Zn-like ions of Yb, W, Au, Pb, Th, and U were observed and their wavelengths measured with greatly improved accuracy. The results are compared to those from laser-produced plasmas and to theory, and significant differences are found. PACS Nos.: 32.30.Jc, 39.30.+w

Flat-field grating spectrometer for high-resolution soft x-ray and extreme ultraviolet measurements on an electron beam ion trap

2004 ◽  
Vol 75 (10) ◽  
pp. 3723-3726 ◽  
Author(s):  
P. Beiersdorfer ◽  
E. W. Magee ◽  
E. Träbert ◽  
H. Chen ◽  
J. K. Lepson ◽  
...  
Keyword(s):  
Electron Beam ◽  
High Resolution ◽  
Ion Trap ◽  
Extreme Ultraviolet ◽  
X Ray ◽  
Grating Spectrometer ◽  
Electron Beam Ion Trap ◽  
Flat Field

Structure and dynamics of highly charged heavy ions studied with the electron beam ion trap in Tokyo

2011 ◽  
Vol 199 (1-3) ◽  
pp. 123-130
Author(s):  
Nobuyuki Nakamura ◽  
Zhimin Hu ◽  
Hirofumi Watanabe ◽  
Yueming Li ◽  
Daiji Kato ◽  
...  
Keyword(s):  
Electron Beam ◽  
Heavy Ions ◽  
Ion Trap ◽  
Structure And Dynamics ◽  
Electron Beam Ion Trap

EXTREME-ULTRAVIOLET SPECTROSCOPY OF Fe VI-Fe XV AND ITS DIAGNOSTIC APPLICATION FOR ELECTRON BEAM ION TRAP PLASMAS

2009 ◽  
Vol 696 (2) ◽  
pp. 2275-2289 ◽  
Author(s):  
G. Y. Liang ◽  
T. M. Baumann ◽  
J. R. Crespo López-Urrutia ◽  
S. W. Epp ◽  
H. Tawara ◽  
...  
Keyword(s):  
Electron Beam ◽  
Ion Trap ◽  
Extreme Ultraviolet ◽  
Ultraviolet Spectroscopy ◽  
Diagnostic Application ◽  
Electron Beam Ion Trap

Spectroscopic analysis of M- and N-intrashell transitions in Co-like to Na-like Yb ions

2021 ◽  
Author(s):  
Roshani Silwal ◽  
Dipti Dipti ◽  
Endre Takacs ◽  
Joan M. Dreiling ◽  
Samuel C Sanders ◽  
...  
Keyword(s):  
Electron Beam ◽  
Magnetic Dipole ◽  
Large Scale ◽  
Ion Trap ◽  
Extreme Ultraviolet ◽  
Wavelength Region ◽  
Grazing Incidence ◽  
Spectral Lines ◽  
Electron Beam Ion Trap ◽  
Large Scale Simulations

Abstract The M-intrashell spectra from Co-like Yb43+ through Na-like Yb59+ ions produced in an electron beam ion trap (EBIT) at the National Institute of Standards and Technology have been studied in the extreme ultraviolet (EUV) range. A few N-intrashell transitions for Co-like Yb43+ and Fe-like Yb44+ are also reported. The EUV radiation was observed with a flat-field grazing incidence spectrometer in the wavelength region of about 7.5 nm to 26.2 nm. The electron beam energies were varied between 3.6 keV and 18 keV to produce the ionization stages of interest. The line identifications were based on the large-scale simulations of the EBIT plasma emission using the non-Maxwellian collisional-radiative code NOMAD. A total of 76 previously unobserved spectral lines corresponding to electric-dipole and magnetic-dipole transitions in the above mentioned ions were identified and discussed. In particular, our accurate wavelength of 24.3855±0.0005 nm for a magnetic-dipole (M1) transition in the ground configuration of Co-like ion presents a solid benchmark for comparisons with the most advanced theories of atomic structure.

Measurements and calculations of Zn-like heavy ions: an update1This article is part of a Special Issue on the 10th International Colloquium on Atomic Spectra and Oscillator Strengths for Astrophysical and Laboratory Plasmas.

2011 ◽  
Vol 89 (5) ◽  
pp. 639-645 ◽  
Author(s):  
Elmar Träbert ◽  
Joel Clementson ◽  
Peter Beiersdorfer ◽  
Juan A. Santana ◽  
Yasuyuki Ishikawa
Keyword(s):  
Electron Beam ◽  
Heavy Ions ◽  
Ion Trap ◽  
Oscillator Strengths ◽  
Valence Shell ◽  
Special Issue ◽  
International Colloquium ◽  
10Th International Colloquium ◽  
Laboratory Plasmas ◽  
Electron Beam Ion Trap

Previous observations of Zn-like ions of elements Yb (Z = 70) through U (Z = 92) in an electron beam ion trap differed (by value and by isoelectronic trend) from the (less precise) results of laser-produced plasma experiments and highlighted the need for much better calculations of ions with more than one electron in the valence shell. We review the progress since achieved and present new calculations for ions in the above range as well as EBIT observations of Zn-like Pt48+ ions (Z = 78). We identify accurate ab initio calculations that agree with the EBIT data as well as recent calculations that clearly fall short.

scholarly journals Extended-range grazing-incidence spectrometer for high-resolution extreme ultraviolet measurements on an electron beam ion trap

2014 ◽  
Vol 85 (11) ◽  
pp. 11E422 ◽  
Author(s):  
P. Beiersdorfer ◽  
E. W. Magee ◽  
G. V. Brown ◽  
N. Hell ◽  
E. Träbert ◽  
...  
Keyword(s):  
Electron Beam ◽  
High Resolution ◽  
Ion Trap ◽  
Extreme Ultraviolet ◽  
Grazing Incidence ◽  
Electron Beam Ion Trap ◽  
Extended Range
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