Measurements of argon metastable density using the tunable diode laser absorption spectroscopy in Ar and Ar/O2
Han Dao-Man1, Liu Yong-Xin1, 2, †, Gao Fei1, Liu Wen-Yao3, Xu Jun1, Wang You-Nian1
       

(color online) Spectral profiles of IP+L, IP, IB, and IL in pure argon discharge driven at 60 MHz, 100 W, and 12 Pa.