Release Time:2019-03-09  Hits:

Indexed by: Journal Article

Date of Publication: 2013-08-28

Journal: JOURNAL OF PHYSICS D-APPLIED PHYSICS

Included Journals: Scopus、EI、SCIE

Volume: 46

Issue: 34

ISSN: 0022-3727

Abstract: Vibrational and rotational temperatures were simultaneously determined in a kilohertz alternating current (ac) gliding arc discharge by using overlapped emission spectra of N-2(C (3)Pi(u)-B (3)Pi(g)) with OH(A (2)Sigma(+)-X (2)Pi(i)) and with N-2(+)(B (2)Sigma(+)(u)-X (2)Sigma(+)(g)). The simulated emission spectra of OH(A (2)Sigma(+)-X (2)Pi(i)) and N-2(+)(B (2)Sigma(+)(u)- X (2)Sigma(+)(g)) were largely overlapped by radiation transition bands of N-2(C (3)Pi(u)- B (3)Pi(g)) when the rotational temperature was elevated from 500K to 2500 K. The temporally resolved vibrational and rotational temperatures in a discharge voltage period suggested that the rotational temperature from OH(A (2)Sigma(+)-X (2)Pi(i)) was remarkably larger than that from N-2(C (3)Pi(u)-B (3)Pi(g)) and N-2(+)(B (2)Sigma(+)(u)- X (2)Sigma(+)(g)). The ratio of number densities of excited electronic states was also determined based on the overlapped emission spectra.