Measurement of photoionization cross-section for the excited states of atoms: a review

MA Baig - Atoms, 2022 - mdpi.com
A review of experimental studies of the measurement of the photoionization cross-section for
the excited states of the alkali atoms, alkaline earth atoms, and rare-gas atoms is presented …

Multiphoton laser ionization for energy conversion in barium vapor

Y Makdisi, J Kokaj, K Afrousheh, J Mathew, R Nair… - Optics …, 2013 - Elsevier
We have studied the ion detection of barium atoms in special heated ovens with a tungsten
rod in the middle of the stainless steel tube. The tungsten rod was heated indirectly by the …

Collision induced modification of spectral lines in the first autoionization region of barium

K Afrousheh, Y Makdisi, J Kokaj, M Marafi… - The European Physical …, 2013 - Springer
The spectrum of barium above the first ionization potential is significantly modified by
collisions with rare gas atoms. Atomic Ba vapor was produced in a heat-pipe oven. The two …

Femtosecond laser fluorescence and propagation in very dense potassium vapor

Y Makdisi, J Kokaj, K Afrousheh, R Nair, J Mathew… - Optics …, 2013 - opg.optica.org
Femtosecond (fs) laser propagation and fluorescence of dense potassium vapor was
studied, and the spectral region around the first and the second doublets of the principal …

Femtosecond laser enhanced current in a thermionic diode with barium vapor

Y Makdisi, J Kokaj, K Afrousheh, J Mathew… - Journal of Quantitative …, 2014 - Elsevier
We studied the signal from a thermionic diode when a femtosecond laser beam was
spatially overlapped by an excimer pumped dye laser beam. The nanosecond dye laser was …

Linewidth oscillations in the 5d3/2nd autoionizing series of barium

K Afrousheh, Y Makdisi, J Kokaj, J Mathew… - The European Physical …, 2013 - Springer
The first autoionization region of barium was studied using a single-color two-photon
excitation scheme. The resonance energies and linewidths of barium 5d 3/2 nd 1 D 0, 2 …

Collision induced phenomena in the autoionizing spectrum of Ba and Sr

Y Makdisi, J Kokaj, K Afrousheh… - Journal of Physics …, 2014 - iopscience.iop.org
Broadening and shift of spectral lines in dense Ba and Sr vapor have been studied below
and above their first ionization limits. The latter are well-known autoionizing spectral lines …