scholarly journals Measurements of the effective electron density in an electron beam ion trap using extreme ultraviolet spectra and optical imaging

2018 ◽  
Vol 89 (10) ◽  
pp. 10E119 ◽  
Author(s):  
T. P. Arthanayaka ◽  
P. Beiersdorfer ◽  
G. V. Brown ◽  
M. Hahn ◽  
N. Hell ◽  
...  
Keyword(s):  
Electron Beam ◽  
Optical Imaging ◽  
Electron Density ◽  
Ion Trap ◽  
Extreme Ultraviolet ◽  
Effective Electron ◽  
Ultraviolet Spectra ◽  
Electron Beam Ion Trap

Electron-beam ion-trap spectra of tungsten in the EUV

2002 ◽  
Vol 80 (12) ◽  
pp. 1503-1515 ◽  
Author(s):  
S B Utter ◽  
P Beiersdorfer ◽  
E Träbert
Keyword(s):  
Electron Beam ◽  
Wavelength Range ◽  
Beam Energy ◽  
Ion Trap ◽  
Extreme Ultraviolet ◽  
Spectral Features ◽  
Electron Beam Energy ◽  
Ultraviolet Spectra ◽  
Electron Beam Ion Trap ◽  
The Individual

At the Livermore electron-beam ion-trap facility, extreme-ultraviolet spectra of tungsten have been recorded in the wavelength range 40–85 Å. The electron-beam energy was varied systematically to identify the individual spectra of Rb-like W37+ to Cu-like W45+. About 60 spectral features have been identified. PACS Nos.: 32.30Rj, 39.30+w, 31.50+w

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.

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

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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