TY - JOUR

T1 - Population of 2p55s levels of neon in He-Ne plasma

T2 - I. the evolution of mechanisms in the discharge and the afterglow

AU - Ivanov, V. A.

AU - Petrovskaya, A. S.

AU - Skoblo, Yu E.

PY - 2013/5

Y1 - 2013/5

N2 - The spectroscopic study of population processes of neon 2p 55s states was carried out in helium afterglow with small admixture of neon at PHe = 38.1 torr, [He]/[Ne]=10-5 with pulsed discharge afterglow in helium with small admixture of neon (pressure equal to 38.1 mm Hg;). It is established that the main mechanism of population of 3s 2 level (in Paschen's notation) in the discharge and the initial after-glow is the excitation transfer from metastable atoms of He(21 S 0). The other three levels - 3s 3, 3s 4, and 3s 5 - corresponding to 2p 55s 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 afterglow phase, when the concentration of He(21 S 0) atoms is small. The hypothesis of recombination mechanism is confirmed by observation of the response of line intensities to pulsed electron heating. The partial coefficients of dissociative recombination into 2p 55s states are estimated.

AB - The spectroscopic study of population processes of neon 2p 55s states was carried out in helium afterglow with small admixture of neon at PHe = 38.1 torr, [He]/[Ne]=10-5 with pulsed discharge afterglow in helium with small admixture of neon (pressure equal to 38.1 mm Hg;). It is established that the main mechanism of population of 3s 2 level (in Paschen's notation) in the discharge and the initial after-glow is the excitation transfer from metastable atoms of He(21 S 0). The other three levels - 3s 3, 3s 4, and 3s 5 - corresponding to 2p 55s 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 afterglow phase, when the concentration of He(21 S 0) atoms is small. The hypothesis of recombination mechanism is confirmed by observation of the response of line intensities to pulsed electron heating. The partial coefficients of dissociative recombination into 2p 55s states are estimated.

UR - http://www.scopus.com/inward/record.url?scp=84878474929&partnerID=8YFLogxK

U2 - 10.1134/S0030400X13040097

DO - 10.1134/S0030400X13040097

M3 - Article

VL - 114

SP - 688

EP - 695

JO - OPTICS AND SPECTROSCOPY

JF - OPTICS AND SPECTROSCOPY

SN - 0030-400X

IS - 5

ER -