A method is proposed to spatially resolve discharge parameters from experimental measurements of emission intensity and 1D numerical simulations including an O atom collisional-radiative model. The can be used for different plasmas conditions. Here, contracted microwave discharges CO2 conversion are studied at intermediate high pressures (100 300 mbar). Radial profiles electron density (n e) as...

We presentHST imaging of continuum (5500 Å) and atomic line (Hα, [OI] 6300 Å, [SII] 6717 and 6731 Å, and [OIII] 5007 Å) emissions in the protoplanetary nebula M 1–92. Ground based imaging of 2μmcontinuum andH2 ro-vibrational (S(1) v=1-0 and v=2-1 lines) emission has been also performed. The 5500 Å continuum is due to scattering of the stellar light by grains in a double-lobed structure comparab...

Reactions of ZnO nanowires (NWs) with atomic hydrogen were investigated with temperature-programmed desorption (TPD) mass spectrometry, scanning electron microscopy, and photoluminescence (PL) spectroscopy. During TPD, molecular H2, H2O, and atomic Zn desorbed from ZnO NWs pretreated with atomic H at 220 K. Three distinct H2 TPD peaks, two from surface H states and one from a bulk H state, were...

We investigated the angular dependence of atomic and ionic debris from CO2 and YAG laser-produced tin plasmas. Several diagnostic techniques were employed for this study including a Faraday cup, witness plates and subsequent x-ray photoelectron spectroscopic analysis, optical emission spectroscopy etc. It was found that the debris emission from the Nd:YAG laser-produced plasmas fell sharply fro...

Recent ASCA spectra exhibit discrepancies with the relative line intensities of various Fe XXIII and XXIV L-shell emission lines predicted by standard plasma emission codes. To address this issue, we have carried out a series of high-resolution, broadband measurements of Fe XXIV line emission using an electron beam ion trap facility. X-ray lines produced in the trap are detected and resolved us...