The combined use of screening and quantum defect parameters in the study of ionized atoms

Aguiar, Julio C.; Rocco, H. O. Di

doi:10.1016/j.hedp.2015.02.002

Cited by 2 publications

(2 citation statements)

References 23 publications

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“…In this section can be found a gross summary of the average atom models evolution according to the progressive treatment of bound and free electrons in the ion-sphere model and according also to the quantum numbers with respect to splitting of the matter structure, of first generation with n-splitting (NOHEL, XSN [8]), of second generation with nl-splitting [10][11][12][13] and of third generation with nlj-splitting (THERMOS, ATMED LTE & CR, OPAQS, …) [16][17][18][19][20][21][22][23][24][25][26][27][28][29][30][31][32]. Highlighting some formulas, it can be noticed the long-term maintained evolution of atomic codes considering the average atom as a statistical item of energy configuration levels (ground state of minimum energy, single excited, doubly excited, autoionizing level, etc.…”

Section: Average Atom Models Evolution and Generationsmentioning

confidence: 99%

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Comparison of Iron Plasma Atomic and Radiative Properties Computed with a Relativistic Collisional Radiative Average Atom Code versus Other Models

Benita

2018

AJR2P

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In this paper, it is presented a representative sample of steady state iron plasmas focusing the attention on two issues. First, the huge computation capability extension up to millions of plasmas with the implementation of a collisional radiative balance in the relativistic average atom model ATMED. Second, it will be addressed the good agreement of atomic and radiative properties not only with respect to very recent experimental measurements of laboratories and High Energy Density facilities, but also to the last theoretical developments in quantum mechanics of statistical methods, as new codes based on the self consistent Hartree-Fock-Slater model for the average atom which in turn solve the Schrödinger’s or Dirac’s equations of radial wave functions. The new codes have been validated with some state of the art models as OPAL, SCO-RCG, STA, CASSANDRA, LEDCOP, THERMOS, etc. The results for plasma properties can be considered as relatively precise and optimal, being checked fundamentally the high sensitivity of calculations to changes in regime, local thermodynamic equilibrium (LTE) or non-LTE (NLTE), electronic and radiation temperatures, dilution factor, matter or electronic density and plasma length. The systematic theoretical investigation is carried out through comparison of calculations performed with a wide set of atomic collisional radiative codes with detailed configurations or codes of the average atom formalism. Some transmissions computed with ATMED CR using UTA (Unresolved Transition Array) formalism are also checked with respect to very recent experimental measurements of laboratories.

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Section: Average Atom Models Evolution and Generationsmentioning

confidence: 99%

“…[9], also as a snapshot of the high sensitivity to changes in temperatures T e ≠ T R eV (Tr = T R ) or densities. [6] and [19]…”

Section: Mean Chargementioning

confidence: 99%

Comparison of Iron Plasma Atomic and Radiative Properties Computed with a Relativistic Collisional Radiative Average Atom Code versus Other Models

Benita

2018

AJR2P

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The influence of the continuum lowering on transition probabilites: competition between cancellation and opacity effects

Rocco

Lanzini

2019

High Energy Density Physics

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The combined use of screening and quantum defect parameters in the study of ionized atoms

Cited by 2 publications

References 23 publications

Comparison of Iron Plasma Atomic and Radiative Properties Computed with a Relativistic Collisional Radiative Average Atom Code versus Other Models

Comparison of Iron Plasma Atomic and Radiative Properties Computed with a Relativistic Collisional Radiative Average Atom Code versus Other Models

The influence of the continuum lowering on transition probabilites: competition between cancellation and opacity effects

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