Display options
Cite
Rosmej FB, Griem HR, Elton RC, et al. Charge-exchange-induced two-electron satellite transitions from autoionizing levels in dense plasmas. Phys Rev E Stat Nonlin Soft Matter Phys. 2002;66(5):056402doi: 10.1103/PhysRevE.66.056402.
Rosmej, F. B., Griem, H. R., Elton, R. C., Jacobs, V. L., Cobble, J. A., Faenov, A. Y., Pikuz, T. A., Geissel, M., Hoffmann, D. H., Süss, W., Uskov, D. B., Shevelko, V. P., & Mancini, R. C. (2002). Charge-exchange-induced two-electron satellite transitions from autoionizing levels in dense plasmas. Physical review. E, Statistical, nonlinear, and soft matter physics, 66(5), 056402. https://doi.org/10.1103/PhysRevE.66.056402
Rosmej, F B, et al. "Charge-exchange-induced two-electron satellite transitions from autoionizing levels in dense plasmas." Physical review. E, Statistical, nonlinear, and soft matter physics vol. 66,5 (2002): 056402. doi: https://doi.org/10.1103/PhysRevE.66.056402
Rosmej FB, Griem HR, Elton RC, Jacobs VL, Cobble JA, Faenov AY, Pikuz TA, Geissel M, Hoffmann DH, Süss W, Uskov DB, Shevelko VP, Mancini RC. Charge-exchange-induced two-electron satellite transitions from autoionizing levels in dense plasmas. Phys Rev E Stat Nonlin Soft Matter Phys. 2002 Nov;66(5):056402. doi: 10.1103/PhysRevE.66.056402. Epub 2002 Nov 11. PMID: 12513602.
Copy Download .nbib Format: NLM
Share it on

Phys Rev E Stat Nonlin Soft Matter Phys. 2002 Nov;66(5):056402. doi: 10.1103/PhysRevE.66.056402. Epub 2002 Nov 11.

Charge-exchange-induced two-electron satellite transitions from autoionizing levels in dense plasmas.

Physical review. E, Statistical, nonlinear, and soft matter physics

F B Rosmej, H R Griem, R C Elton, V L Jacobs, J A Cobble, A Ya Faenov, T A Pikuz, M Geissel, D H H Hoffmann, W Süss, D B Uskov, V P Shevelko, R C Mancini

Affiliations

  1. GSI-Darmstadt, Plasmaphysik, Planckstrasse 1, D-64291 Darmstadt, Germany.

PMID: 12513602 DOI: 10.1103/PhysRevE.66.056402

Abstract

Order-of-magnitude anomalously high intensities for two-electron (dielectronic) satellite transitions, originating from the He-like 2s(2) 1S0 and Li-like 1s2s(2) (2)S(1/2) autoionizing states of silicon, have been observed in dense laser-produced plasmas at different laboratories. Spatially resolved, high-resolution spectra and plasma images show that these effects are correlated with an intense emission of the He-like 1s3p 1P-1s(2) 1S lines, as well as the K(alpha) lines. A time-dependent, collisional-radiative model, allowing for non-Maxwellian electron-energy distributions, has been developed for the determination of the relevant nonequilibrium level populations of the silicon ions, and a detailed analysis of the experimental data has been carried out. Taking into account electron density and temperature variations, plasma optical-depth effects, and hot-electron distributions, the spectral simulations are found to be not in agreement with the observations. We propose that highly stripped target ions (e.g., bare nuclei or H-like 1s ground-state ions) are transported into the dense, cold plasma (predominantly consisting of L- and M-shell ions) near the target surface and undergo single- and double-electron charge-transfer processes. The spectral simulations indicate that, in dense and optically thick plasmas, these charge-transfer processes may lead to an enhancement of the intensities of the two-electron transitions by up to a factor of 10 relative to those of the other emission lines, in agreement with the spectral observations.

Publication Types