Energy Levels, Radiative Data and Collisional Excitation of Chlorine like Tungsten W\(^{57+}\)

Authors

DOI:

https://doi.org/10.26713/jamcnp.v8i2.1774

Keywords:

Transition probabilities, Oscillator strengths, Excitation cross section

Abstract

Extended computation of energy levels and radiative data such as transition wavelengths, transition probabilities, and oscillator strengths for electric dipole (E1) transitions are performed for chlorine-like Tungsten ions WLVIII using the fully relativistic Flexible Atomic Code (FAC). Comparisons are done with the accessible experimental results and theoretical data in the literature. Close agreement has been found ensuring the accuracy and reliability of our results. We have studied collisional excitation cross section and presented magnetic sublevel cross sections for excitations from the ground state 3s\({}^{2}\) 3p\({}^{52}\)P\({}^{o}\)\({}_{3/2}\) to the first excited state 3s\({}^{2}\)3p\({}^{4}\)3d \({}^{4}\)D\({}_{3/2}\) of W\({}^{57+}\) as a function of incident electron energy. We calculate new data for several levels where no other theoretical and/or experimental results are available. Our work will help to develop diagnostics for evaluating tungsten concentrations in fusion plasmas and provide platform for modeling predictions.

Downloads

Download data is not yet available.

References

K. M. Aggarwal and F. P. Keenan, Energy levels, radiative rates, and lifetimes for transitions in W LVIII, Atomic Data and Nuclear Data Tables 100(6) (2014), 1603 – 1767, DOI: 10.1016/j.adt.2014.06.002.

S. Aggarwal, J. Singh, A. K. S. Jha and M. Mohan, Photoionization cross-section of chorine-like iron, Journal of Astrophysics and Astronomy 33 (2012), 291 – 301, DOI: 10.1007/s12036-012-9151-7.

P. Beiersdorfer, M. J. May, J. H. Scofield and S. B. Hansen, Atomic physics and ionization balance of high-Z ions: Critical ingredients for characterizing and understanding high-temperature plasmas, High Energy Density Physics 8 (2012), 271 – 283, DOI: 10.1016/j.hedp.2012.03.003.

K. A. Berrington, J. C. Pelan and J. A. Waldock, Oscillator strength for 3s23p5-3s3p6 in Cl-like ions, Journal of Physics B: Atomic, Molecular and Optical Physics 34 (2001), L419, DOI: 10.1088/0953-4075/34/13/102.

A. K. Bhatia and G. A. Doschek, Atomic data and spectral line intensities for Fe X, Atomic Data and Nuclear Data Tables 60 (1995), 97 – 143, DOI: 10.1006/adnd.1995.1005.

M. Bilal, A. V. Volotka, R. Beerwerth and S. Fritzsche, Line strengths of QED-sensitive forbidden transitions in B, Al, F and Cl like ions, Physical Review A 97(5) (2018), 052506, DOI: 10.1103/PhysRevA.97.052506.

J. Clementson, P. Beiersdorfer, G. V. Brown, M. F. Gu, H. Lundberg, Y. Podpaly and E. Trabert, Tungsten spectroscopy at the Livermore electron beam ion trap facility, Canadian Journal of Physics 89 (2011), 571 – 580, DOI: 10.1139/p11-028.

T. Das, L. Sharma and R. Srivastava, Electron impact excitation and polarization studies of Fe-like W48Å to Al-like W61Å ions, Canadian Journal of Physics 93 (2015), 888 – 897, DOI: 10.1139/cjp-2014-0636.

Dipti, T. Das, L. Sharma and R. Srivastava, Electron impact excitation and polarization studies of Fe-like W48Å to Al-like W61Å ions, Canadian Journal of Physics 93(8) (2015), 1 – 10, DOI: 10.1139/cjp-2014-0636.

P. D. Dumont, H. P. Gornir, Y. Baudinet-Robinet and Kapenyak, Lifetime measurements in Ti IV-VII using transitions observed in beam-foil spectroscopy between 400 and 800 Å, Journal of the Optical Society of America 71 (1981), 502 – 503, DOI: 10.1364/JOSA.71.000502.

B. C. Fawcett, Improved oscillator strength calculations for Ti VI and Fe X, Atomic Data and Nuclear Data Tables 47 (1991), 319 – 361, DOI: 10.1016/0092-640X(91)90004-N.

A. Goyal, R. Sharma, A. K. Singh and M. Mohan, Fully relativistic atomic structure calculations for W XLIV for determination of plasma diagnostic terms, Canadian Journal of Physics 95 (2017), 950 – 957, DOI: 10.1139/cjp-2016-0812.

M. F. Gu, The flexible atomic code, Canadian Journal of Physics 86(5) (2008), 675 – 689, DOI: 10.1139/p07-197.

K. N. Huang, Y. K. Kim and K. T. Cheng, Energy-level scheme and transition probabilities of Cl-like ions, Atomic Data and Nuclear Data Tables 28 (1983), 355 – 377, DOI: 10.1016/0092-640X(83)90022-0.

K. Kozioł, Breit and QED contributions in atomic structure calculations of tungsten ions, Journal of Quantitative Spectroscopy and Radiative Transfer 242 (2020), 106772, DOI: 10.1016/j.jqsrt.2019.106772.

A. Kramida, Recent progress in spectroscopy of tungsten, Canadian Journal of Physics 89 (2011), 551 – 570, DOI: 10.1139/p11-045.

A. E. Livington, D. J. G. Irwin and E. H. Pinnington, Lifetime measurements in Ar II – Ar VII, Journal of the Optical Society of America 62 (1972), 1303 – 1308, DOI: 10.1364/JOSA.62.001303.

M. Mohan and A. Hibbert, Level energies and oscillator strengths in Cu XIII, Journal of Physics B: Atomic, Molecular and Optical Physics 25 (1992), 4427, DOI: 10.1088/0953-4075/25/21/010.

M. Mohan, S. Aggarwal and N. Singh, Multiconfigurational Dirac-Fock atomic structure calculations for Cl-like tungsten, Canadian Journal of Physics 92 (2014), 177 – 183, DOI: 10.1139/cjp-2013-0348.

NIST Atomic Specra Database, website: https://physics.nist.gov/PhysRefData/ASD/levels_form.html.

Priti, Dipti, L. Sharma and R. Srivastava, Fully relativistic electron impact excitation cross-section and polarization for tungsten ions, Atoms 3 (2015), 53 – 75, DOI: 10.3390/atoms3020053.

T. Pütterich, R. Neu, R. Dux, A. D. Whiteford, M. G. O. Mullane and the ASDEX Upgrade Team, Modelling of measured tungsten spectra from ASDEX Upgrade and predictions for ITER, ASDEX Upgrade Team, Plasma Physics and Controlled Fusion 50 (2008), 085016, DOI: 10.1088/0741-3335/50/8/085016.

P. Quinet, Dirac-Fock calculations of forbidden transitions within the 3pk and 3dkground configurations of highly charged tungsten ions (W47Å-W61Å), Journal of Physics B: Atomic, Molecular and Optical Physics 44 (2011), 195007, DOI: 10.1088/0953-4075/44/19/195007.

Y. Ralchenko, I. N. Draganic, J. N. Tan, J. D. Gillaspy, J. M. Pomeroy, J. Reader, U. Feldman and G. E. Holland, EUV spectra of highly-charged ions W54Å-W63Å relevant to ITER diagnostics, Journal of Physics B: Atomic, Molecular and Optical Physics 41 (2008), 021003, DOI: 10.1088/0953-4075/41/2/021003.

G. Singh and N. K. Puri, Revised and extended calculations of level energies, M1 and E2 radiative rates for highly charged Tungsten ions from W57Å to W60Å, Journal of Physics B: Atomic, Molecular and Optical Physics 49 (2016), 205002. DOI: 10.1088/0953-4075/49/20/205002.

E. Träbert, Experimental checks on calculations for Cl-, S- and P-like ions of the iron group elements, Journal of Physics B: Atomic, Molecular and Optical Physics 29 (1996), L217 – 224, DOI: 10.1088/0953-4075/29/6/008.

M. Vajed-Samii and K. MacDonald, Electric dipole transitions in Cl-like ions, Atomic Data and Nuclear Data Tables 26(5) (1981), 467 – 475, DOI: 10.1016/0092-640X(81)90014-0.

N. Verma, A. K. S. Jha and M. Mohan, Transitions in Co XI, Journal of Physics B: Atomic, Molecular and Optical Physics 38 (2005), 3185 – 3196, DOI: 10.1088/0953-4075/38/17/009.

M. Xu, A. Y. Yan, S. A. Wu, F. Hu and X. F. Li, Wavelengths, transition probabilities, and oscillator strengths for M-shell transitions in tungsten ions with partially filled 3p subshell, Canadian Journal of Physics 95 (2017), 283 – 290, DOI: 10.1139/cjp-2016-0341.

C. Y. Zhang, K. Wang, R. Si, M. Godefroid, P. Jönsson, J. Xiao, M. F. Gu and C. Y. Chen, Benchmarking calculations with spectroscopic accuracy of level energies and wavelengths in W LVII–W LXII tungsten ions, Journal of Quantitative Spectroscopy and Radiative Transfer 269 (2021), 107650, DOI: 10.1016/j.jqsrt.2021.107650.

Downloads

Published

2021-10-31
CITATION

How to Cite

Verma, N., Jha, A. K. S., & Mohan, M. (2021). Energy Levels, Radiative Data and Collisional Excitation of Chlorine like Tungsten W\(^{57+}\). Journal of Atomic, Molecular, Condensed Matter and Nano Physics, 8(2), 113–132. https://doi.org/10.26713/jamcnp.v8i2.1774

Issue

Section

Research Article