Measurement Electric Field in Atmospheric Hermstein’s Glow Corona Discharge Using N2 Spectrum Intensity Ratio of N2 First and Second Positive System Band

We experimentally estimate a reduced electric field (
${E}/{N}{)}$
of Hermstein’s glow corona discharge from
$\text{N}_{{2}}$
intensity ratio: the intensity of the first positive system band (3, 1) [FPS(3, 1)] and the intensity of second positive system band (0, 0) [SPS(0, 0)] are used. The intensity ratio [FPS(3, 1)
$/$
SPS(0, 0)] has the relation with the
${E}/{N}$
. First, we experimentally clarify the relationship between FPS(3, 1)
$/$
SPS(0, 0) and
$\text {E}/\text {N}$
at atmospheric pressure. This relationship is acquired by generating the uniform light ionized emission in the parallel-plane gap with the YAG laser and measuring the intensity ratio of FPS(3, 1)/SPS (0, 0) in the range of
${E}/{N} =83.9\,\,\times \,\,10^{-{21}}$
–95.9
$\times \,\,10^{-{21}}$
Vm
²
. This relationship is applied to Hermstein’s glow corona discharge at atmospheric pressure. As a result, the
${E}/{N}$
of Hermstein’s glow corona discharge is acquired in the range of
${E}/{N} =117.4\,\,\times \,\,10^{-{21}}$
–125.1
$\times \,\,10^{-{21}}$
Vm
²
. We find the transition of the corona stabilization effect from the discharge occurrence to breakdown by measuring the
${E}/{N}$
. This work also considers the gas temperature rise of discharge. Considering the gas temperature rise of discharge has led to the universal method of acquiring the
${E}/{N}$
of discharge from the intensity ratio of FPS(3, 1)/SPS(0, 0).