CAJ | 학술논문

　　自持体放电又称大气压脉冲放电或脉冲辉光放电，是一种利用微秒-亚微秒量级脉冲在大气压下获得大体积等离子体的放电形式。为了测量自持体放电过程中气体温度的演化，采用光谱拟合的方法，对氮分子第二正带光谱进行了理论分析。并对两套横向激励大气压（ TEA ）气体激光器放电系统（准分子放电腔快放电系统， TEA CO2激光器放电腔慢放电系统）的等离子体时域分辨分子光谱进行了测量，并拟合了气体转动温度，取得了两种不同放电结构放电过程中气体温度演化的数据。结果表明，准分子放电腔快放电过程中总的能量注入密度为1.3×105 J/m3时，温度升高92K，TEA CO2激光器放电腔慢放电过程中总的能量注入密度为7×104 J/m3时，温度升高约50K，两套系统温度升高比对应于总的注入能量密度比。这一结果对研究自持体放电机理提高放电稳定性是有帮助的。
　　자지체방전우칭대기압맥충방전혹맥충휘광방전，시일충이용미초-아미초량급맥충재대기압하획득대체적등리자체적방전형식。위료측량자지체방전과정중기체온도적연화，채용광보의합적방법，대담분자제이정대광보진행료이론분석。병대량투횡향격려대기압（ TEA ）기체격광기방전계통（준분자방전강쾌방전계통， TEA CO2격광기방전강만방전계통）적등리자체시역분변분자광보진행료측량，병의합료기체전동온도，취득료량충불동방전결구방전과정중기체온도연화적수거。결과표명，준분자방전강쾌방전과정중총적능량주입밀도위1.3×105 J/m3시，온도승고92K，TEA CO2격광기방전강만방전과정중총적능량주입밀도위7×104 J/m3시，온도승고약50K，량투계통온도승고비대응우총적주입능량밀도비。저일결과대연구자지체방전궤리제고방전은정성시유방조적。
In order to measure the evolution of gas temperature during self-sustained volume discharge , the second positive spectra of nitrogen was analyzed using fitting spectra method .Plasma time-domain resolution molecular spectra of two transversely excited atmospheric ( TEA) gas laser discharge systems ( excimer laser fast discharge system and TEA CO 2 laser slow discharge system ) were measured .Gas rotational temperature was fitted to obtain the data of gas temperature evolution of two discharge structures .The results show that the rising temperature is 92K while the total of inject energy density is 1.3 ×105 J/m3 of excimer laser fast discharge system and the rising temperature is 50K while the total of inject energy density is 7 ×104 J/m3 of TEA CO2 laser slow discharge system .The ratio of the rising temperature of these two systems is proportional to the raio of the inject energy density of these two systems .These results are helpful to study self-sustained volume discharge mechanism and improve discharge stability .