Ion trap measurement of U64+ X-ray transition spectra

Grande, N.K. Del; Beiersdörfer, P.; Henderson, J. R.; Osterheld, A. L.; Scofield, J. H.; Swenson, J.K.

doi:10.1016/0168-583x(91)96012-a

Cited by 7 publications

(6 citation statements)

References 15 publications

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“…Our FAC calculations are in better agreement with experimental values [17,19] than the other theoretical predictions. The GRASP2 level energies for the aforementioned measured levels in Ni-like U seem to be closer to the three experimental results [16][17][18] in comparison with FAC and previous theoretical results. Furthermore, our GRASP2 value for p d 3 4 -D 3 3 is in excellent agreement with the laser-plasma measurement [18].…”

Section: Ni-like Usupporting

confidence: 88%

“…Our GRASP2 and FAC energies are in closer agreement with the experimental data than the HUL-LAC results. For d f 3 4 D , our GRASP2 energies differ with EBIT measurements [16] by 0.05%, whereas FAC values deviate by 0.07%. Our FAC calculations are in better agreement with experimental values [17,19] than the other theoretical predictions.…”

Section: Ni-like Ucontrasting

confidence: 52%

“…The other FAC energies are closer to the measured ones [17,18] in comparison to our GRASP2 energies. It should be noted that there are significant differences (3.4-4.7eV) between EBIT measurements [16] and the laser-plasma experiment [18] for the d f 3 4 -D 3 1 level. For the p f 3 4 -D 1 2 level, both the laser-plasma measurements performed by Mandelbaum et al [17,18] differ by 4.7 eV.…”

Section: Ni-like Umentioning

confidence: 88%

“…X-ray line energies of highly charged uranium ions ( + + U U -60 69 ) were measured by Grande et al [16] in low density plasma by using the EBIT facility. The observed spectra contains E2 lines from highly charged uranium ions with a dominant Ni-like component.…”

Section: Ni-like Umentioning

confidence: 99%

See 3 more Smart Citations

Energy levels, transition rates, oscillator strengths and lifetimes in Ne-like, Ni-like, and Cu-like uranium ions

Bari¹,

Nazir²,

Nasim³

et al. 2014

Phys. Scr.

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We present the fine-structure energy levels, wavelengths, oscillator strengths, transition energies, and transition rates of optically allowed inner-shell transitions of Ne-, Ni-, and Cu-like uranium ions by using the multiconfiguration Dirac-Fock method with the fully relativistic GRASP2 code (partly improved by us). In order to compare these results, we have performed other independent calculations with a fully relativistic Flexible Atomic Code (FAC). We have determined extensive configuration interaction wavefunctions to calculate the level energies of the inner-shell excited states of these three uranium ionic states. Overall, our calculated energy levels, wavelengths, transition rates, and oscillator strengths within the levels of selected configurations show better agreement with the available experimental and other theoretical results. Furthermore, we report radiative lifetimes of all the excited states of these three uranium ions. We also present many unpublished data about energy values, wavelengths, transitions rates, and oscillator strengths for inner-shell transitions. We believe that our calculated inner shell transition energies are of interest for the analysis of uranium x-ray spectra.

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Section: Ni-like Usupporting

confidence: 88%

Section: Ni-like Ucontrasting

confidence: 52%

Section: Ni-like Umentioning

confidence: 88%

Section: Ni-like Umentioning

confidence: 99%

See 2 more Smart Citations

Energy levels, transition rates, oscillator strengths and lifetimes in Ne-like, Ni-like, and Cu-like uranium ions

Bari¹,

Nazir²,

Nasim³

et al. 2014

Phys. Scr.

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“…Electric quadrupole lines have been observed in many low-density laboratory plasmas; see, e.g., Refs. [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

X-ray spectroscopy ofE2andM3transitions in Ni-like W

Clementson

Beiersdörfer

2010

Phys. Rev. A

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The electric quadrupole (E2) and magnetic octupole (M3) ground-state transitions in Ni-like W 46+ have been measured using high-resolution crystal spectroscopy at the LLNL electron-beam ion trap facility. The lines fall in the soft x-ray region near 7.93Å and were originally observed as an unresolved feature in tokamak plasmas. Using flat ammonium dihydrogen phosphate and quartz crystals, the wavelengths, intensities, and polarizations of the two lines have been measured for various electron-beam energies and compared to intensity and polarization calculations performed using the Flexible Atomic Code (FAC).

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Ionization Energies of Ni-Like Ions: Applications to X-ray Laser Modeling II

Ivanova

2024

Springer Proceedings in Physics

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Ion trap measurement of U64+ X-ray transition spectra

Cited by 7 publications

References 15 publications

Energy levels, transition rates, oscillator strengths and lifetimes in Ne-like, Ni-like, and Cu-like uranium ions

Energy levels, transition rates, oscillator strengths and lifetimes in Ne-like, Ni-like, and Cu-like uranium ions

X-ray spectroscopy ofE2andM3transitions in Ni-like W

Ionization Energies of Ni-Like Ions: Applications to X-ray Laser Modeling II

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