M F Gharaibeh

K-shell photoionization of singly ionized atomic nitrogen: experiment and theory

Absolute cross sections for the K-shell photoionization of C-like nitrogen ions were measured by employing the ion‐photon merged-beam technique at the SOLEIL synchrotron radiation facility in Saint‐Aubin, France. High-resolution spectroscopy with E/! E ! 7000 was achieved with the photon energy from 388 to 430 eV scanned with a band pass of 300 meV, and the 399.4‐402 eV range with 60 meV. Experimental results are compared with theoretical predictions made from the multi-configuration Dirac‐Fock and R-matrix methods. The interplay between experiment and theory enabled the identification and characterization of the strong 1s 2p resonances observed in the spectra. (Some figures in this article are in colour only in the electronic version)

K-shell photoionization of B-like atomic nitrogen ions: experiment and theory

Measurements of absolute cross sections for the K-shell photoionization of B-like atomic nitrogen ions were carried out utilizing the ion?photon merged-beam technique at the SOLEIL synchrotron radiation facility in Saint-Aubin, France. High-resolution spectroscopy with E/?E ?13,500 was the maximum resolution achieved. We have investigated two photon energy regions: 404?409?eV and 439?442?eV. Resonance peaks found in the experimental measured cross sections are compared with theoretical estimates from the multi-configuration Dirac?Fock, R-matrix and empirical methods, allowing identification of the strong 1s ? 2p and the weaker 1s ? 3p resonances in the observed K-shell spectra of this B-like nitrogen ion.

K-shell photoionization of Be-like and Li-like ions of atomic nitrogen: experiment and theory

Absolute cross sections for the K-shell photoionization of Be-like and Li-like atomic nitrogen ions were measured by employing the ion?photon merged-beam technique at the SOLEIL synchrotron radiation facility in Saint-Aubin, France. High-resolution spectroscopy at nominal resolutions of 38, 56, 111, 133 meV full width at half maximum (FWHM) for Be-like and 125 meV FWHM for Li-like atomic nitrogen ions was achieved for the photon energies ranging from 410 up to 460?eV. The experimental measurements are compared with theoretical estimates from the multi-configuration Dirac?Fock, R-matrix and an empirical method. The interplay between experiment and theory enabled the identification and characterization of the strong 1s ? 2p resonances features observed in the K-shell spectra of each ion and the region around 460?eV for the 1s ? 3p resonance of the N3 + ion yielding suitable agreement with experiment.

K-shell photoionization of B-like oxygen (O3 +) ions: experiment and theory

Absolute cross sections for the {it K}-shell photoionization of boron-like (B-like) O

Electron impact ionization of xenon ions

^{3+}

Plasma rate coefficients for electron-impact ionization of Xeq+ ions (q = 8, …, 17)

ions were measured by employing the ion-photon merged-beam technique at the SOLEIL synchrotron-radiation facility in Saint-Aubin, France. High-resolution spectroscopy with E/

Electron-impact ionization of 4d-shell xenon and tin ions

Delta

Electron-impact single and double ionization of tin ions

E

Electron-impact single and multiple ionization of xenon ions

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Photoionization and fragmentation of fullerene ions

5000 (