The anomalous sodium doublet D<sub>2</sub>/D<sub>1</sub>spectral line intensity ratio – a manifestation of CCD's presaturation effect

Kasalica, B.; Stojadinović, Stevan; Belča, I.; Sarvan, Mirjana; Zeković, Ljubiša; Radić-Perić, J.

doi:10.1039/c2ja30239j

Cited by 6 publications

(5 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Strong sodium doublet spectral lines [ 43 ] and Balmer line H α [ 44 ] are not suitable for the spectral line shape analysis. The broadened profile of the Balmer H β line was used for MDs electron number density measurements.…”

Section: Resultsmentioning

confidence: 99%

Application of Micro-Arc Discharges during Anodization of Tantalum for Synthesis of Photocatalytic Active Ta2O5 Coatings

2023

Self Cite

View full text Add to dashboard Cite

Ta2O5 coatings were created using micro-arc discharges (MDs) during anodization on a tantalum substrate in a sodium phosphate electrolyte (10 g/L Na3PO4·10H2O). During the process, the size of MDs increases while the number of MDs decreases. The elements and their ionization states present in MDs were identified using optical emission spectroscopy. The hydrogen Balmer line Hβ shape analysis revealed the presence of two types of MDs, with estimated electron number densities of around 1.1 × 1021 m−3 and 7.3 × 1021 m−3. The effect of MDs duration on surface morphology, phase and chemical composition, optical absorption, and photoluminescent, properties of Ta2O5 coatings, as well as their applications in photocatalytic degradation of methyl orange, were investigated. The created coatings were crystalline and were primarily composed of Ta2O5 orthorhombic phase. Since Ta2O5 coatings feature strong absorption in the ultraviolet light region below 320 nm, their photocatalytic activity is very high and increases with the time of the MDs process. This was associated with an increase of oxygen vacancy defects in coatings formed during the MDs, which was confirmed by photoluminescent measurements. The photocatalytic activity after 8 h of irradiation was around 69%, 74%, 80%, and 88% for Ta2O5 coatings created after 3 min, 5 min, 10 min, and 15 min, respectively.

show abstract

Section: Resultsmentioning

confidence: 99%

Application of Micro-Arc Discharges during Anodization of Tantalum for Synthesis of Photocatalytic Active Ta2O5 Coatings

2023

Self Cite

View full text Add to dashboard Cite

show abstract

“…Optical detection system consisted of a large-aperture achromatic lens, a 0.3 m Hilger spectrometer (diffraction grating 1200 grooves per mm and inverse linear dispersion of 2.7 nm mm À1 ), and a very sensitive PI-MAX ICCD thermoelectrically cooled camera (À40 C) with high quantum efficiency manufactured by Princeton Instruments. 36 The CCD chip consisted of 430 Â 256 active pixels, each approximately 26 mm Â 26 mm. The system was used with several grating positions with overlapping wavelength range of 5 nm.…”

Section: Methodsmentioning

confidence: 99%

Investigation of plasma electrolytic oxidation on valve metals by means of molecular spectroscopy – a review

2014

Self Cite

View full text Add to dashboard Cite

show abstract

“…At high absolute intensities the ratios of intensities (stronger/weaker line) systematically underestimated the ratios of the corresponding Einstein probabilities. This topic was discussed in detail in a recent study [36].…”

Section: Mg Spectral Linesmentioning

confidence: 97%

Characterization of plasma electrolytic oxidation of magnesium alloy AZ31 in alkaline solution containing fluoride

Stojadinović

Vasilić

Radić-Perić

et al. 2015

Surface and Coatings Technology

Self Cite

View full text Add to dashboard Cite

The anomalous sodium doublet D₂/D₁spectral line intensity ratio – a manifestation of CCD's presaturation effect

Cited by 6 publications

References 25 publications

Application of Micro-Arc Discharges during Anodization of Tantalum for Synthesis of Photocatalytic Active Ta2O5 Coatings

Application of Micro-Arc Discharges during Anodization of Tantalum for Synthesis of Photocatalytic Active Ta2O5 Coatings

Investigation of plasma electrolytic oxidation on valve metals by means of molecular spectroscopy – a review

Characterization of plasma electrolytic oxidation of magnesium alloy AZ31 in alkaline solution containing fluoride

Contact Info

Product

Resources

About

The anomalous sodium doublet D2/D1spectral line intensity ratio – a manifestation of CCD's presaturation effect

Cited by 6 publications

References 25 publications

Application of Micro-Arc Discharges during Anodization of Tantalum for Synthesis of Photocatalytic Active Ta2O5 Coatings

Application of Micro-Arc Discharges during Anodization of Tantalum for Synthesis of Photocatalytic Active Ta2O5 Coatings

Investigation of plasma electrolytic oxidation on valve metals by means of molecular spectroscopy – a review

Characterization of plasma electrolytic oxidation of magnesium alloy AZ31 in alkaline solution containing fluoride

Contact Info

Product

Resources

About

The anomalous sodium doublet D₂/D₁spectral line intensity ratio – a manifestation of CCD's presaturation effect