EXPERIMENTAL INVESTIGATIONS OF ION CHARGE DISTRIBUTIONS, EFFECTIVE ELECTRON DENSITIES, AND ELECTRON–ION CLOUD OVERLAP IN ELECTRON BEAM ION TRAP PLASMA USING EXTREME-ULTRAVIOLET SPECTROSCOPY
- G. Liang, José R. Crespo López-Urrutia, J. Ullrich
- Physics
- 10 September 2009
Spectra in the extreme ultraviolet range from 107 to 353 Å emitted from Fe ions in various ionization stages have been observed at the Heidelberg electron beam ion trap (EBIT) with a flat-field…
SYSTEMATIC CALCULATIONS OF ENERGY LEVELS AND TRANSITION RATES OF BE-LIKE IONS WITH Z = 10–30 USING A COMBINED CONFIGURATION INTERACTION AND MANY-BODY PERTURBATION THEORY APPROACH
We report calculations of energy levels and radiative rates for transitions among the lowest 116 fine-structure levels arising from the n ≤ 5 ?> configurations in Be-like ions with Z = 10–30. The…
Investigation of transitions between metastable levels of the first excited configuration of palladium-like tungsten
Spectroscopy in the wavelength region of 330 nm to 400 nm for highly charged tungsten was performed using the High Temperature Super Conducting Electron Beam Ion Trap (SH-HtscEBIT) at Fudan…
Radiative rates and electron impact excitation rate coefficients for H-like Fe XXVI
- Chongyang Chen, Kai Wang, Min Huang, Yan-sen Wang, Y. Zou
- Physics
- 1 April 2010
MCDF calculations for the lowest excited states in the Zn-like sequence
- Y. Liu, R. Hutton, Y. Zou, M. Andersson, T. Brage
- Physics
- 28 July 2006
We report on large scale ab initio calculation for the 4s21S0–4s4p1,3P0,1,2 transitions in the zinc-like sequence, using the multiconfiguration Dirac–Fock (MCDF) method. Our attention is focused on…
Energy levels and radiative data for Kr-like W38+ from MCDHF and RMBPT calculations
- Xueling Guo, J. Grumer, Y. Zou
- Physics
- 8 June 2016
Energies, transition rates, line strengths and lifetimes have been computed for all levels of the 4p6 and 4p54d configurations of W38+ by using the multi-configuration Dirac–Hartree–Fock (MCDHF)…
Ionization and dissociation of methane in a nanosecond laser field
The ionization and dissociation of methane in an intense laser field (approximately 1013 W cm−2) with pulse duration of 7 ns were studied experimentally. The yields of fragment ions are plotted as a…
Experimental and theoretical study of visible transitions in promethium-like tungsten
- Z. Z. Zhao, M. L. Qiu, R. Hutton
- Physics
- 14 June 2015
Visible transitions of promethium-like tungsten (W13+) were studied using the Shanghai high temperature superconducting electron beam ion trap. The M1 transition between the ground state (4f135s2 2F)…
Radiative rates and electron-impact excitation for the n ≤ 6 fine-structure levels in H-like ions with 13 ≤ Z ≤ 42
Context. Many observed emission lines from space missions are due to highly charged H-like ions. An analysis of the lines provides information on the temperature, density, and chemical composition of…
A NOVEL METHOD TO DETERMINE MAGNETIC FIELDS IN LOW-DENSITY PLASMA FACILITATED THROUGH ACCIDENTAL DEGENERACY OF QUANTUM STATES IN Fe9+
- Wenxian Li, J. Grumer, Y. Zou
- Physics
- 1 July 2015
We propose a new method to determine magnetic fields, by using the magnetic-field-induced electric dipole transition 3 p 4 3 d 4 D 7 / 2 ?> → 3 p 5 2 P 3 / 2 ?> in Fe 9 + ?> ions. This ion has a high…
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