Experimental N V and Ne VIII low-temperature dielectronic recombination rate coefficients
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چکیده
منابع مشابه
Experimental N v and Ne viii low - temperature dielectronic recombination rate coefficients
The dielectronic recombination rate coefficients of N v and Ne viii ions have been measured at a heavy-ion storage ring. The investigated energy ranges covered all dielectronic recombination resonances attached to 2s → 2p (∆n = 0) core excitations. The rate coefficients in a plasma are derived and parameterized by using a convenient fit formula. The experimentally derived rate coefficients are ...
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Using published measurements of dielectronic recombination (DR) resonance strengths and energies for C V to C IV and O VIII to O VII, we have calculated the DR rate coefficient for these ions. Our derived rates are in good agreement with multiconÐguration, intermediate-coupling and multiconÐguration, fully relativistic calculations, as well as with most L S-coupling calculations. Our results ar...
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Ka spectra of heliumlike neon and associated lithiumlike, berylliumlike, and boronlike satellite line emission have been observed with a high-resolution crystal spectrometer on the Lawrence Livermore Electron Beam Ion Trap. The KLL dielectronic recombination satellites were resolved from their He-like parent lines in electron energy space, and their wavelengths and resonance strengths measured....
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The unified method for total electron–ion recombination is extended to study the dielectronic satellite (DES) lines. These lines, formed from radiative decay of autoionizing states, are highly sensitive temperature diagnostics of astrophysical and laboratory plasma sources. The computation of the unified recombination rates is based on the relativistic Breit–Pauli R-matrix method and the close ...
متن کاملELECTRON-ION RECOMBINATION RATE COEFFICIENTS AND PHOTOIONIZATION CROSS SECTIONS FOR ASTROPHYSICALLY ABUNDANT ELEMENTS. X. Ne viii AND Ne ix FOR ULTRAVIOLET AND X-RAY MODELING
Results are presented for the inverse processes of photoionization and electron-ion recombination of (h þ Ne viii$ Ne ixþ e) and (h þ Ne ix$ Ne xþ e) using the self-consistent unified method. The method employs an identical wave function expansion for both photoionization and recombination, and it includes both radiative and dielectronic recombination. Total, as well as level-specific, photoion...
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ژورنال
عنوان ژورنال: Astronomy & Astrophysics
سال: 2005
ISSN: 0004-6361,1432-0746
DOI: 10.1051/0004-6361:20042500