NO分子对放电产生单重态氧的影响

李留成; 多丽萍; 唐书凯; 金玉奇; 李国富; 王增强; 汪健; 王元虎; 于海军

doi:doi:10.3788/cjl201340.0802006

中国激光, 2013, 40 (8): 0802006, 网络出版: 2013-08-01

NO分子对放电产生单重态氧的影响

Influence of Nitric Oxide on the Singlet Delta Oxygen Yield by Discharge

论文大纲

李留成 ^*多丽萍唐书凯金玉奇李国富王增强汪健王元虎于海军

作者单位

中国科学院大连化学物理研究所中国科学院化学激光重点实验室, 辽宁大连 116023

激光器化学激光器放电氧碘激光器氧原子猝灭机理一氧化氮 lasers chemical lasers discharge oxygen iodine lasers oxygen atom quenching mechanism nitric oxide

摘要

利用介质阻挡射频放电产生了单重态氧，实验中在放电气体中加入了一定量的NO气体以提高单重态氧的相对产率。通过研究放电出口处单重态氧发光强度与NO流量的变化关系，考查了NO分子对放电产生单重态氧的影响。实验结果表明，NO分子对单重态氧相对产率的提高作用呈现出先迅速增强，继而缓慢达到饱和并略有下降。在所设计的实验条件下，最佳NO流量应为O2流量的3%左右。给出了NO分子对放电产生单重态氧浓度的拟合公式，拟合结果与实验值吻合很好。从化学反应机理上对该公式给出了解释，提出了NO分子猝灭氧原子过程的一种新的可能机理，估算出该过程的速率常数为1.8×10-30 cm6/s。

Abstract

Singlet delta oxygen O2(a1Δ) molecules are generated by O2/He gaseous mixture dielectric barrier radio-frequency discharge. NO gas is added into main gas flow to improve the relative yield of O2(a1Δ). Influence of NO on the relative yield of O2(a1Δ) is examined by observing the O2(a1Δ) emission intensity as a function of NO flow rate. The experimental results show that the O2(a1Δ) relative yield reaches a saturation with the increase of NO flow rate and then slowly decreases. The optimal NO flow rate is about 3% of O2 flow rate under the conditions of the experiments. A new reaction mechanism including three-body oxygen atom recombination is proposed. According to the new mechanisms, a fitting function is given which agrees well with the experimental results. The rate constant of the new mechanism is obtained to be 1.8×10-30 cm6/s.

参考文献

[1] 桑凤亭, 金玉奇, 多丽萍. 化学激光器及其应用: 第一版[M]. 北京: 化学工业出版社, 2006.

Sang Fengting, Jin Yuqi, Duo Liping. Chemical Lasers and Their Applications: 1st edition[M]. Beijing: Chemical Industry Press, 2006.

[2] M C Heaven. Recent advances in the development of discharge-pumped oxygen-iodine lasers[J]. Laser Photonics Rev, 2010, 4(5): 671-683.

[3] D L Carroll, J T Verdeyen, D M King, et al.. Path to measurement of positive gain on the 1315 nm transition of atomic iodine pumped by O2 (a1Δ) produced in an electric discharge[J]. IEEE Quantum Electronics, 2005, 41(2): 213-223.

[4] D L Carroll, J T Verdeyen, D M King, et al.. Continuous-wave laser oscillation on the 1315 nm transition of atomic iodine pumped by O2(a1Δ) produced in an electric discharge[J]. Appl Phys Lett, 2005, 86(11): 111104.

[5] 多丽萍, 李留成, 王增强, 等. 电激励氧碘激光器研究最新进展[J]. 激光与光电子学进展, 2008, 45(11): 15-21.

Duo Liping, Li Liucheng, Wang Zengqiang, et al.. Recent development of electric oxygen-iodine laser[J]. Laser & Optoelectronics Progress, 2008, 45(11): 15-21.

[6] 多丽萍,王增强, 李留成, 等. 放电激励产生单重态氧的实验研究[J]. 中国激光, 2011, 38(7): 0702003.

Duo Liping, Wang Zengqiang, Li Liucheng, et al.. Experimental study of singlet delta oxygen produced by discharge[J]. Chinese J Lasers, 2011, 38(7): 0702003.

[7] 李留成, 多留萍, 金玉奇, 等. 放电参数对电激励产生单重态氧影响的理论研究[J]. 中国激光, 2011, 38(12): 1202009.

Li Liucheng, Duo Liping, Jin Yuqi, et al.. Theoretical study of the influence of discharge parameters on electrical driven O2(a) generation[J]. Chinese J Lasers, 2011, 38(12): 1202009.

[8] O V Braginskiy, A N Vasilieva, K S Klopovskiy, et al.. Singlet oxygen generation in O2 flow excited by RF dischange: I. Homogemeous discharge mode: α-mode[J] J Phys D: Appl Phys, 2005, 38(19): 3609.

[9] R Atkinson, D L Baulch, R A Cox, et al.. Evaluated kinetic, photochemical and heterogeneous data for atmospheric chemistry [J]. V J Phys Chem Ref Data, 1997, 26(6): 1329-1499.

李留成, 多丽萍, 唐书凯, 金玉奇, 李国富, 王增强, 汪健, 王元虎, 于海军. NO分子对放电产生单重态氧的影响[J]. 中国激光, 2013, 40(8): 0802006. Li Liucheng, Duo Liping, Tang Shukai, Jin Yuqi, Li Guofu, Wang Zengqiang, Wang Jian, Wang Yuanhu, Yu Haijun. Influence of Nitric Oxide on the Singlet Delta Oxygen Yield by Discharge[J]. Chinese Journal of Lasers, 2013, 40(8): 0802006.

NO分子对放电产生单重态氧的影响

关于本站 Cookie 的使用提示

全站搜索

NO分子对放电产生单重态氧的影响

相关论文

相关资讯

关于本站 Cookie 的使用提示

全站搜索