E1, E2 and M1 transition parameters for some levels over ionization limit of Ne III

Eser, S.; Özdemir, Leyla

doi:10.1140/epjp/i2016-16227-y

Cited by 1 publication

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“…Tayal [25] calculated the single-photon PI cross section for the ground state O I using an R-matrix method. More recently, relevant parameters for states lying over the ionization limit of Ne III have been studied [26].…”

Section: Introductionmentioning

confidence: 99%

Single-photon photoionization of oxygen-like Ne III

Nahar

Covington

Kilcoyne

et al. 2019

International Journal of Mass Spectrometry

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We offer a theoretical and experimental study of the single-photon photoionization of Ne III. The high photon flux and the high-resolution capabilities of the Advanced Light Source at the LBNL were employed to measure absolute photoionization cross sections. The resulting spectrum has been benchmarked against high accuracy relativistic Breit-Pauli R-matrix calculations. A large close-coupling wave function expansion which comprises up to 58 fine-structure levels of the residual ion Ne IV of configurations 2s 2 2p 3 , 2s2p 4 , 2p 5 , 2s 2 2p 2 3s, 2s 2 2p 2 3p and 2s 2 2p 2 3d was included. A complete identification of the measured features was achieved by considering seven low-lying levels of Ne III. We found that the photoionization cross-section (σ P I ) exhibits the presence of prominent resonances in the low-energy region near the ionization thresholds that correspond to low-lying levels. These include high-peak narrow resonances with almost zero background introduced by relativistic effects. However, there does not exist a significant contribution to σ P I from relativistic effects at the high-energy interval of the present study.

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Section: Introductionmentioning

confidence: 99%