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Abstract
We present in this review our recent theoretical studies on atomic processes subject to the plasma environment including the α and β emissions and the ground state photoabsorption of the one- and two-electron atoms and ions. By carefully examining the spatial and temporal criteria of the Debye–Hückel (DH) approximation based on the classical Maxwell–Boltzmann statistics, we were able to represent the plasma effect with a Debye–Hückel screening potential VDH in terms of the Debye length D, which is linked to the ratio between the plasma density N and its temperature kT. Our theoretical data generated with VDH from the detailed non-relativistic and relativistic multiconfiguration atomic structure calculations compare well with the limited measured results from the most recent experiments. Starting from the quasi-hydrogenic picture, we were able to show qualitatively that the energy shifts of the emission lines could be expressed in terms of a general expression as a function of a modified parameter, i.e., the reduced Debye length λ. The close agreement between theory and experiment from our study may help to facilitate the plasma diagnostics to determine the electron density and the temperature of the outside plasma.
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Two- and Three-Photon Partial Photoionization Cross Sections of Li+, Ne8+ and Ar16+ under XUV Radiation. APPLIED SCIENCES-BASEL 2017. [DOI: 10.3390/app7030294] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Ruberti M, Averbukh V, Decleva P. B-spline algebraic diagrammatic construction: Application to photoionization cross-sections and high-order harmonic generation. J Chem Phys 2014; 141:164126. [DOI: 10.1063/1.4900444] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- M. Ruberti
- Department of Physics, Imperial College London, Prince Consort Road, London SW7 2AZ, United Kingdom
| | - V. Averbukh
- Department of Physics, Imperial College London, Prince Consort Road, London SW7 2AZ, United Kingdom
| | - P. Decleva
- Dipartimento di Scienze Chimiche, Universita’ di Trieste, Via Giorgieri 1, I-34127 Trieste, Italy
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Chang TN, Fang TK. Effect of positive-energy orbitals on the photoionization cross sections and oscillator strengths of He and divalent atoms. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1995; 52:2638-2644. [PMID: 9912545 DOI: 10.1103/physreva.52.2638] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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Chang TN, Fang TK. Wavelength dependence of the nonresonant photoionization cross section of a two-electron atom near the ionization threshold. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1995; 52:2052-2056. [PMID: 9912463 DOI: 10.1103/physreva.52.2052] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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Ho YK. Electric-field effects on the N=2 Feshbach resonances of H-. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1995; 52:375-381. [PMID: 9912257 DOI: 10.1103/physreva.52.375] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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Chang TN, Zhu L. Photoionization of the Be isoelectronic sequence from the ground and the 1S bound excited states. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1995; 51:374-380. [PMID: 9911594 DOI: 10.1103/physreva.51.374] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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van der Hart HW. Partial and total multiphoton detachment rates for H- in a perturbative B-spline-based approach. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1994; 50:2508-2516. [PMID: 9911170 DOI: 10.1103/physreva.50.2508] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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Abrashkevich AG, Shapiro M. Photoionization of two-electron atoms via the hyperspherical artificial-channel method: Application to H- and He. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1994; 50:1205-1217. [PMID: 9911012 DOI: 10.1103/physreva.50.1205] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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Ho YK. Doubly excited 3Po resonance states of He below the N=2 and N=3 He+ thresholds. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1993; 48:3598-3605. [PMID: 9910025 DOI: 10.1103/physreva.48.3598] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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Chang TN, Zhu L. Resonant width and energy determined by photoionization from excited divalent atoms. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1993; 48:R1725-R1728. [PMID: 9909892 DOI: 10.1103/physreva.48.r1725] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/11/2023]
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Chang TN, Zhen M. Photoionization from 1sns 1,3Se states of helium. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1993; 47:4849-4855. [PMID: 9909514 DOI: 10.1103/physreva.47.4849] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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Xi J, Wu L, Li B. Correlation energies of Be-like atoms: A multimodel space many-body perturbation calculation with finite basis sets. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1993; 47:2701-2709. [PMID: 9909239 DOI: 10.1103/physreva.47.2701] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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Chang TN. He photoionization to the doubly excited (2pnd) and (sp,2n-) 1Po series. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1993; 47:3441-3443. [PMID: 9909330 DOI: 10.1103/physreva.47.3441] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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Liu W, Xi J, He X, Wu L, Li B. Hydrogenic circular states in a superstrong magnetic field: A B-spline approach. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1993; 47:3151-3159. [PMID: 9909292 DOI: 10.1103/physreva.47.3151] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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Sub-nanohartree accuracy from LCAO expansion with B-spline functions. An application to H+2 and HeH2+. Chem Phys Lett 1993. [DOI: 10.1016/0009-2614(93)85315-f] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Chang TN. Widths of the doubly excited resonances of two-electron atoms below the n=2 threshold. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1993; 47:705-708. [PMID: 9908970 DOI: 10.1103/physreva.47.705] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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Tang JZ, Watanabe S, Matsuzawa M. Dipole density function and evaluation of the oscillator strength of He. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1992; 46:3758-3761. [PMID: 9908567 DOI: 10.1103/physreva.46.3758] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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Tang JZ, Watanabe S, Matsuzawa M, Lin CD. Evidence of an excited angular correlation mode in high-lying He**. PHYSICAL REVIEW LETTERS 1992; 69:1633-1635. [PMID: 10046274 DOI: 10.1103/physrevlett.69.1633] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Chang TN, Tang X. Atomic-structure effects in multiphoton ionization of magnesium. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1992; 46:R2209-R2212. [PMID: 9908467 DOI: 10.1103/physreva.46.r2209] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/11/2023]
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Larkins F, Armen G. Correlation in the photoionization process: the relaxed Hartree-Fock method. ACTA ACUST UNITED AC 1992. [DOI: 10.1016/0166-1280(92)87067-a] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Bachau H, Lambropoulos P, Tang X. Discretization techniques applied to the study of two-photon ionization in systems with two active electrons. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1991; 44:4516-4520. [PMID: 9906492 DOI: 10.1103/physreva.44.4516] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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Ho YK. Autoionizing 1Po states of He between the N=2 and 3 thresholds of He+. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1991; 44:4154-4161. [PMID: 9906452 DOI: 10.1103/physreva.44.4154] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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