Electron-impact excitation of Xe+ and polarization of its subsequent emissions

Gupta, Sakshi; Sharma, Lalita; Srivastava, Rajesh

doi:10.1016/j.jqsrt.2018.07.014

Cited by 11 publications

(10 citation statements)

References 40 publications

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“…Using the following expression, we obtain the rate coefficient k if [23] for excitation from a lower level i to an upper level f by implementing our calculated cross sections…”

Section: Theoretical Methodsmentioning

confidence: 99%

“…There are no previous theoretical or experimental reports for the electron impact excitation of these ions. From our previous work [19][20][21][22][23][24][25][26] on theoretical calculations of electron impact excitation of different atoms and ions and their applications in developing suitable plasma models, we have shown that implementing the reliable fine-structure excitation cross sections in a collisional radiative model helped in correctly interpreting the measurements on the plasma parameters viz, electron temperature and density. Also our recent detailed work reporting the electron excitation cross sections of fine structure transitions of Xe + [23] has been applied [3,4] in studying low temperature plasma modeling.…”

Section: Introductionmentioning

confidence: 99%

“…From our previous work [19][20][21][22][23][24][25][26] on theoretical calculations of electron impact excitation of different atoms and ions and their applications in developing suitable plasma models, we have shown that implementing the reliable fine-structure excitation cross sections in a collisional radiative model helped in correctly interpreting the measurements on the plasma parameters viz, electron temperature and density. Also our recent detailed work reporting the electron excitation cross sections of fine structure transitions of Xe + [23] has been applied [3,4] in studying low temperature plasma modeling. Thus, keeping in view the significance of the calculations of electron excitation cross section data to identify and elucidate the EUV spectra of xenon ions, in the present work, we have taken up the detailed study on electron impact excitation of Ge-like Xe 22+ , Galike Xe 23+ , Zn-like Xe 24+ and Cu-like Xe 25+ ions.…”

Section: Introductionmentioning

confidence: 99%

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Electron impact excitation of Ge-like to Cu-like xenon ions in the extreme ultraviolet

Bharti

Srivastava

2020

J. Phys. B: At. Mol. Opt. Phys.

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Electron impact excitation of Ge-like (Xe22+) to Cu-like (Xe25+) highly charged xenon ions are studied and dipole allowed fine-structure transitions in the wavelength range 9–25 nm are considered. We use relativistic distorted wave method to calculate the electron excitation cross sections for the different transitions of the four ions in the scattered electron energy range from excitation threshold to 1500 eV. The ionic bound state wavefunctions have been obtained using multi-configuration Dirac–Fock method. To ascertain the accuracy of the wavefunctions, the wavelengths and oscillator strengths of the considered transitions in these ions are calculated and compared with the previously reported measurements and other theoretical calculations, where available. For plasma diagnostic applications, the obtained cross sections are further used to calculate the rate coefficients of the transitions as well as fitted with an analytical expression which can be used in plasma model conveniently.

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“…Using the following expression, we obtain the rate coefficient k if [23] for excitation from a lower level i to an upper level f by implementing our calculated cross sections…”

Section: Theoretical Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Electron impact excitation of Ge-like to Cu-like xenon ions in the extreme ultraviolet

Bharti

Srivastava

2020

J. Phys. B: At. Mol. Opt. Phys.

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“…Scattered electron energy (eV) In order to make our results available for plasma modeling, we have fitted our calculated cross sections for all the fine-structure transitions using the two analytical expressions. For low to intermediate energy range, the following analytical formula [20] has been employed to fit the cross sections,…”

Section: Resultsmentioning

confidence: 99%

Electron Impact Excitation of Singly Charged Indium Ion

Bharti

Sharma

2020

Jour. Atom. Mol. Conden. Mat. Nano Phys.

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We study electron impact excitation of In + using relativistic distorted wave method and report cross sections for 37 transitions among the fine-structure levels of 5s 2 , 5s5p, 5s5d, 5s6s and 5s6p configurations at the scattered electron energies upto 200 eV. The bound state wavefunctions of the target ion are obtained within multi-configuration Dirac-Fock approach. Our calculated oscillator strengths are compared with the results from the NIST database and other theoretical calculations. Cross sections are fitted with an analytical formula and the fitting parameters are made available for their possible applications in plasma modeling.

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“…From the calculated excitation cross sections σ i f , we can obtain the rate coefficients k i f [21] of the considered transitions by using the following expression:…”

Section: Theorymentioning

confidence: 99%

Electron Impact Excitation of Ge-like Te20+–Cd16+ Ions

Malker

Sharma

2022

Atoms

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We study electron impact excitation of dipole allowed transitions in the extreme ultraviolet range—8–55 nm—for the germanium isoelectronic sequence Te20+–Cd16+. The fine structure transitions between the ground state having configuration 4s24p2 and the excited states with configurations 4s4p3 and 4s24p4d are considered for these ions. We employ the relativistic distorted wave method to calculate the excitation cross sections in the incident electron energy range from the excitation threshold to 5000 eV. To obtain the required ionic bound state wavefunctions we have used the multi-configuration Dirac-Fock method with correlations within the n = 5 complexes as well as performed relativistic configuration interaction calculations to include the quantum electrodynamic effects. The accuracy of these wavefunctions is established by comparing our calculated wavelengths and oscillator strengths of the considered transitions with the previously reported measurements and other available theoretical results. We also provide the fitting parameters of the calculated cross sections and the excitation rate coefficients for their direct applications in plasma modeling.

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Electron-impact excitation of Xe+ and polarization of its subsequent emissions

Cited by 11 publications

References 40 publications

Electron impact excitation of Ge-like to Cu-like xenon ions in the extreme ultraviolet

Electron impact excitation of Ge-like to Cu-like xenon ions in the extreme ultraviolet

Electron Impact Excitation of Singly Charged Indium Ion

Electron Impact Excitation of Ge-like Te20+–Cd16+ Ions

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