The chemical compositions of minerals in selected thin sections (Table1) were investigated using the CAMECA SX-100 electron probe microanalyser (EPMA) equipped with wavelength-dispersive spectrometers (WDS). Analyses were performed under a 15 kV accelerating voltage; a 10 nA beam current was used f...
A spectroscopic study of population of the excited 3 s 2 -3 s 5 states (in Paschen's notation) of neon atoms of the 2 p 5 5 s configuration was carried out in a pulsed discharge helium plasma with a small admixture of neon (pressure 38.1 Torr, [He]/[Ne] ≌ 10 5 ). Study the...
The relative emission cross sections in Ne+-Ne collisions were measured for the direct excitation and for the electron capture excitation of the Ne I 2p1, 2p3 and 2p5 (Paschen notation, 2p53p configuration) levels over the energy range 3-260 keV. Disregarding some structures, the magnitudes...
Absolute photoionization cross sections for Ne atoms in the excited 2p~53p[K]_J (J = 0-3) levels (Paschen notation 2p_x, x = 1-10) were calculated at near threshold energies within the configuration interaction Pauli-Fock approach including core polarization. The computed spectra and the ...
The other three levels-3s (3), 3s (4), and 3s (5)-corresponding to 2p (5)5s configuration are populated in the afterglow as a result of the dissociative recombination HeNe+ of ions with electrons. The same process is also the main channel of population of 3s (2) level in the late...
Absolute photoionization cross sections for Ne atoms in the excited \\(2{p}^{5}3{p}[K]_{J}~(J=0\\!\\!-\\!\\!3)\\) levels (Paschen notation \\(2{p}_{x},~x=1\\!\\!-\\!\\!10\\) ) were calculated at near threshold energies within the configuration interaction Pauli-...
The above notation means that we have used the minimum geometries at the CCSD(T)/aug-cc-pVTZ level and performed single point energy calculations at the aug-cc-pVQZ and aug-cc-pV5Z basis sets. Afterward, these energies were then extrapolated at the complete basis set (CBS) limit. The ...
(4) fij = mc 8π2e2 λ2ji ωj ωi Aji = 1.49 × 10−16 λ2ji ωj ωi A ji , (5) where m and e are the electron mass and charge, respectively, c is the velocity of light, λji is the transition wavelength in Å, and ωi and ωj are the statistical weights of ...
The results of a spectroscopic study of the afterglow of a pulsed discharge in a He–Ne mixture are presented, showing the unique selective population of the upper level of the 2p54p configuration (3p1 in Paschen's notation) of a neon atom at a helium pressure of tens of Torr. The ...