SPECTROSCOPIC INVESTIGATION OF ARGON DC GLOW DISCHARGE IN PLASMA MEDIUM

Year 2023, Volume: 19 Issue: 1, 19 - 33, 31.05.2023

Esra Okumuş

https://doi.org/10.56850/jnse.1179169

Abstract

In this study, UV-VIS-NIR (Ultraviolet Visible Near-Infrared) spectra emitted from Argon Glow discharge plasma in a low vacuum were recorded with a high-resolution Czerny-Turner type spectrometer. Argon plasma was produced at a pressure of 5mTorr and with a voltage of 584 V. Argon plasma was produced between two parallel stainless steel plates anode and cathode with a diameter of 15 cm, a thickness of 0.8 cm, and a distance of 13 cm between them. The radiative and collisional processes of the Argon plasma medium were modeled by the PrismSPECT atomic physics software (Software). The distributions of ion densities were calculated using the Saha-Boltzmann equation. The intensity of the excited energy levels of Ar(I) and Ar (II) ions were calculated in the electron temperature range of (0.4-3.5eV) and the mass density of (10-4-10-1gr/cm3). The UV-Visible-NIR spectra were simulated and compared with experimental spectra. The ratios of the intensities of the ArII/ArI (1s22s22p63s23p44f1/1s22s22p63s23p54p1) spectral lines were obtained for different plasma temperatures and densities. The temperature of the argon plasma was obtained from the spectral line intensity ratios.

Keywords

Argon Glow discharge plasma, Saha-Boltzmann equation, Prismspect atomic physics software

Supporting Institution

TÜBİTAK UME

Project Number

G2ED-E1-02-I.

PLAZMA ORTAMINDA ARGON DC GLOW DEŞARJININ SPEKTROSKOPİK İNCELENMESİ

Abstract

Bu çalışmada, düşük vakum ortamında Argon plazmasından yayılan UV-VIS-NIR (Morötesi-Görünür-Yakın Kızılaltı) spektrumları, yüksek çözünürlüklü bir Czerny-Turner tipi spektrometre ile kaydedilmiştir. Argon plazması, 5 mTorr basınç ve 584 V voltaj parametreleri kullanılarak elde edilmiştir. Argon plazması, 15 cm çapında, 0.8 cm kalınlığında ve aralarında 13 cm mesafe bulunan iki paralel paslanmaz çelik levha anot ve katot arasında üretilmiştir. Argon Glow discharge plazmasının ışınımsal ve çarpışma süreçleri, PrismSPECT atomic physics yazılımı ile modellendi. Ar(I) ve Ar(II) iyonlarının uyarılmış enerji seviyelerinin yoğunlukları, elektron sıcaklık aralığı (0.4-3.5eV) ve kütle yoğunluk aralıkları (10-4-10-1gr/cm3) seçilerek Saha-Boltzmann denklemi aracılığıyla hesaplandı. UV-Visible-NIR spektrumları PrismSPECT atomic physics yazılımı ile modellendi ve deneysel spektrumlar ile karşılaştırıldı. ArII/ArI (1s22s22p63s23p44f1/1s22s22p63s23p54p1) spektral çizgi yoğunluk oranı farklı plazma sıcaklıkları ve yoğunlukları için elde edildi. Argon plazmasının sıcaklığı, PrismSPECT atomic physics yazılımı ile modellenen spektroskopik çizgi yoğunluk oranlarından yaklaşık olarak elde edildi.

Keywords

Argon glow discharge plazma, Saha-Boltzmann denklemi, PrismSPECT atomic physics yazılımı

Project Number

G2ED-E1-02-I.

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