Effect of Dense Plasma Environment on the Spectroscopic Properties of He-like Ca\(^{18+}\) Ion

Dishu Dawra, Mayank Dimri, Avnindra Kumar Singh, Alok Kumar Singh Jha, Shougaijm Somorendro Singh

Abstract


Plasma shielding effects on the energy levels and radiative properties of He-like Ca\(^{18+}\) ion under dense plasma conditions have been studied. For this purpose, the multiconfiguration Dirac-Fock method has been implemented by incorporating the ion sphere model potential as a modified interaction potential between the electron and the nucleus. To check the authenticity of our results, independent calculations have been performed using the modified relativistic configuration interaction method. It is observed that the transition energies associated with \(\Delta n = 0\) transitions are blue shifted, whereas red shifted for \(\Delta n \neq 0\) transitions. The variation in transition probabilities and weighted oscillator strengths with plasma densities has also been analyzed. The present results should be beneficial in the plasma modeling and fusion plasma research applications.


Keywords


Strongly coupled plasma; Atomic structure; Radiative properties

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References


M. S. Murillo, J. Weisheit, S. B. Hansen and M. Dharma Wardana, Phys. Rev. E 87, 063113 (2013), DOI: 10.1103/PhysRevE.87.063113.

B. Saha and S. Fritzsche, J. Phys. B: At. Mol. Opt. Phys. 40, 259 (2007), DOI: 10.1088/0953-4075/40/2/002.

M. Nantel, G. Ma, S. Gu, C. Y. Cote, J. Itatani and D. Umstadter, Phys. Rev. Lett. 80, 4442 (1998), DOI: 10.1103/PhysRevLett.80.4442.

S. Skupsky, Phys. Rev. A 21, 1316 (1980), DOI: 10.1103/PhysRevA.21.1316.

S. Ichimaru, Rev. Mod. Phys. 54, 1017 (1982), DOI: 10.1103/RevModPhys.54.1017.

M. S. Murillo and J. C. Weisheit, Phys. Rep. 302, 1 (1998), DOI: 10.1016/S0370-1573(98)00017-9.

A. Sil and P. Mukherjee, Int. J. Quantum Chem. 106, 465 (2006), DOI: 10.1002/qua.20733.

A. Sil, J. Anton, S. Fritzsche, P. Mukherjee and B. Fricke, Eur. Phys. J. D 55, 645 (2009), DOI: 10.1140/epjd/e2009-00258-6.

X. Li, Z. Xu and F. Rosmej, J. Phys. B: At. Mol. Opt. Phys. 39, 3373 (2006), DOI: 10.1088/0953-4075/39/16/019.

R. Rodriguez, J. M. Gil and R. Florido, Phys. Scr. 76, 418 (2007), DOI: 10.1088/0031-8949/76/5/002.

S. Bhattacharyya, J. Saha and T. Mukherjee, Phys. Rev. A 91, 042515 (2015), DOI: 10.1103/Phys-RevA.91.042515.

M. Belkhiri, C. J. Fontes and M. Poirier, Phys. Rev. A 92, 032501 (2015), DOI: 10.1103/Phys-RevA.92.032501.

X.-F. Li, G. Jiang, H.-B.Wang, M.Wu and Q. Sun, Phys. Scr. 92, 075401 (2017), DOI: 10.1088/1402-4896/aa7000.

X.-F. Li and G. Jiang, Chin. Phys. B 27, 073101 (2018), DOI: 10.1088/1674-1056/27/7/073101.

Z. B. Chen, K. Ma, Y. L. Ma and K. Wang, Phys. Plasmas 26, 082101 (2019), DOI: 10.1063/1.5100850.

Z.-B. Chen, J. Quant. Spectrosc. Radiat. Transf. 237, 106615 (2019).

Z.-B. Chen, J. Electron Spectros. Relat. Phenomena 237, 146894 (2019), DOI: 10.1016/j.elspec.2019.146894.

Z.-B. Chen, K. Wang, K. Ma and F. Hu, J. Quant. Spectrosc. Radiat. Transf. 236, 106584 (2019), DOI: 10.1016/j.jqsrt.2019.106584.

Z.-B. Chen, Radiat. Phys. Chem. 166, 108508 (2020), DOI: 10.1016/j.radphyschem.2019.108508.

K. M. Aggarwal and F. P. Keenan, Phys. Scr. 85, 025306 (2012), DOI: 10.1088/0031-8949/85/02/025306.

P. H. Norrington, http://amdpp.phys.strath.ac.uk/UKAPAP/codes.html.

I. Grant, J. McKenzie, P. Norrington, M. Mayers and N. Pyper, Comput. Phys. Commun. 21, 207 (1980), DOI: 10.1016/0010-4655(80)90041-7.

A. Singh, D. Dawra, M. Dimri, A. K. Jha and M. Mohan, Phys. Plasmas 26, 062704 (2019), DOI: 10.1063/1.5100565.

A. Singh, M. Dimri, D. Dawra, A. K. Jha, N. Verma and M. Mohan, Radiat. Phys. Chem. 156, 174 (2019), DOI: 10.1016/j.radphyschem.2018.11.002.

A. Singh, M. Dimri, D. Dawra, A. K. Jha and M. Mohan, Can. J. Phys. 97, 436 (2019), DOI: 10.1139/cjp-2018-0218.

M. F. Gu, Can. J. Phys. 86, 675 (2008), DOI: 10.1139/p07-197.

A. Kramida, Yu. Ralchenko, J. Reader and NIST ASD Team, NIST Atomic Spectra Database (ver. 5.6.1), [Online], available: https://physics.nist.gov/asd [2019, June 20]. National Institute of Standards and Technology, Gaithersburg, MD. (2018).




DOI: http://dx.doi.org/10.26713%2Fjamcnp.v6i3.1295

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