Production of CH (A2Δ) by multi-photon dissociation of (CH3)2CO, CH3NO2, CH2Br2, and CHBr3 at 213 nm

doi:10.1088/1674-1056/23/8/083701

›› 2014, Vol. 23 ›› Issue (8): 83701-083701.doi: 10.1088/1674-1056/23/8/083701

• ATOMIC AND MOLECULAR PHYSICS • 上一篇下一篇

Production of CH (A²Δ) by multi-photon dissociation of (CH₃)₂CO, CH₃NO₂, CH₂Br₂, and CHBr₃ at 213 nm

李胜强, 许亮, 陈扬骎, 邓联忠, 印建平

State Key Laboratory of Precision Spectroscopy, Department of Physics, East China Normal University, Shanghai 200062, China

收稿日期:2013-12-29 修回日期:2014-02-21 出版日期:2014-08-15 发布日期:2014-08-15
基金资助:
Project supported by the National Natural Science Foundation of China (Grant Nos. 10674047, 10804031, 10904037, 10904060, 10974055, 11034002, 11274114, and 61205198), the National Key Basic Research and Development Program of China (Grant Nos. 2006CB921604 and 2011CB921602), and the Basic Key Program of Shanghai Municipality, China (Grant No. 07JC14017), the Fundamental Research Funds for the Central Universities, and the Shanghai Leading Academic Discipline Project, China (Grant No. B408).

Production of CH (A²Δ) by multi-photon dissociation of (CH₃)₂CO, CH₃NO₂, CH₂Br₂, and CHBr₃ at 213 nm

Li Sheng-Qiang (李胜强), Xu Liang (许亮), Chen Yang-Qin (陈扬骎), Deng Lian-Zhong (邓联忠), Yin Jian-Ping (印建平)

State Key Laboratory of Precision Spectroscopy, Department of Physics, East China Normal University, Shanghai 200062, China

Received:2013-12-29 Revised:2014-02-21 Online:2014-08-15 Published:2014-08-15
Contact: Yin Jian-Ping E-mail:jpyin@phy.ecnu.edu.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant Nos. 10674047, 10804031, 10904037, 10904060, 10974055, 11034002, 11274114, and 61205198), the National Key Basic Research and Development Program of China (Grant Nos. 2006CB921604 and 2011CB921602), and the Basic Key Program of Shanghai Municipality, China (Grant No. 07JC14017), the Fundamental Research Funds for the Central Universities, and the Shanghai Leading Academic Discipline Project, China (Grant No. B408).

摘要/Abstract

摘要： In order to realize electrostatic Stark deceleration of CH radicals and study cold chemistry, the fifth harmonic of a YAG laser is used to prepare CH (A²Δ) molecules through using the multi-photon dissociation of (CH₃)₂CO, CH₃NO₂, CH₂Br₂, and CHBr₃ at ~213 nm. The CH product intensity is measured by using the emission spectrum of CH (A²Δ→X²Π). The dependence of fluorescence intensity on laser power is studied, and the probable dissociation channels are analyzed. The relationship between the fluorescence intensity and some parameters, such as the temperature of the beam source, stagnation pressure, and the time delay between the opening of pulse valve and the photolysis laser, are also studied. The influence of three different carrier gases on CH signal intensity is investigated. The vibrational and rotational temperatures of the CH (A²Δ) product are obtained by comparing experimental data with the simulated ones from the LIFBASE program.

关键词: fifth harmonic of YAG laser, photodissociation, emission spectrum

Abstract: In order to realize electrostatic Stark deceleration of CH radicals and study cold chemistry, the fifth harmonic of a YAG laser is used to prepare CH (A²Δ) molecules through using the multi-photon dissociation of (CH₃)₂CO, CH₃NO₂, CH₂Br₂, and CHBr₃ at ~213 nm. The CH product intensity is measured by using the emission spectrum of CH (A²Δ→X²Π). The dependence of fluorescence intensity on laser power is studied, and the probable dissociation channels are analyzed. The relationship between the fluorescence intensity and some parameters, such as the temperature of the beam source, stagnation pressure, and the time delay between the opening of pulse valve and the photolysis laser, are also studied. The influence of three different carrier gases on CH signal intensity is investigated. The vibrational and rotational temperatures of the CH (A²Δ) product are obtained by comparing experimental data with the simulated ones from the LIFBASE program.

Key words: fifth harmonic of YAG laser, photodissociation, emission spectrum

中图分类号: (Trapping of molecules)

37.10.Pq

37.10.Mn (Slowing and cooling of molecules) 37.10.Vz (Mechanical effects of light on atoms, molecules, and ions) 37.20.+j (Atomic and molecular beam sources and techniques)

李胜强, 许亮, 陈扬骎, 邓联忠, 印建平. Production of CH (A²Δ) by multi-photon dissociation of (CH₃)₂CO, CH₃NO₂, CH₂Br₂, and CHBr₃ at 213 nm[J]. , 2014, 23(8): 83701-083701.

Li Sheng-Qiang (李胜强), Xu Liang (许亮), Chen Yang-Qin (陈扬骎), Deng Lian-Zhong (邓联忠), Yin Jian-Ping (印建平). Production of CH (A²Δ) by multi-photon dissociation of (CH₃)₂CO, CH₃NO₂, CH₂Br₂, and CHBr₃ at 213 nm[J]. Chin. Phys. B, 2014, 23(8): 83701-083701.

参考文献 41

[1]	Heurlinger T 1918 Ph. D. thesis, University of Lund
[2]	Heurlinger T and Hulthen E 1919 Z. Wiss. Photogr. Photophys. Photochem. 18 241
[3]	Kind M, Stuhi F, Tzeng Y R, Alexander M H and Dagdigian P J 2001 J. Chem. Phys. 114 4479
[4]	Lichtin D A, Bermun M R and Lin M C 1984 Chem. Phys. Lett. 108 18
[5]	Nishiyama N, Sekiya H, Yamaguchi S, Tsuji M and Nishimura Y 1986 J. Phys. Chem. 90 1491
[6]	Dean A J, Hanson R K and Bowman C 1991 J. Phys. Chem. 95 3180
[7]	Takezaki M, Ohoyama H, Kasai T and Kuwata K 1994 Laser Chem. 15 113
[8]	Ikejiri K, Ohoyama H, Nagamachi Y and Kasai T 2005 Chem. Phys. Lett. 401 465
[9]	Truppe S, Hendricks R J, Tokunaga S K, Lewandowski H J, Kozlov M J, Christian Henkel, Hinds E A and Tarbutt M R 2013 Nat. Commun. 4 2600
[10]	Nagamachi Y, Ohoyama H, Yamakawa K and Kasai T 2006 Chem. Phys. Lett. 421 124
[11]	Fotakis C, Martin M and Donovan R J 1982 J. Chem. Soc. Faraday Trans. 2,78 1363
[12]	Zou P, Shu J N, Sears T J, Hall G E and North S W 2004 J. Phys.Chem. A 108 1482
[13]	Baronavski A P and Mcdonald J R 1978 Chem. Phys. Lett. 56 369
[14]	Avtaeva S V, Mamytbekov M Z and Otorbaev D K 1997 J. Phys. D: Appl. Phys. 30 3000
[15]	Romanzin C, Boye-Peronne S and Gauyacq D, Benilan Y, Gazeau M C and Douin S 2006 J. Chem. Phys. 125 114312
[16]	Anderson D T, Davis S, Zwier T S and Nesbitt D J 1996 Chem. Phys. Lett. 258 207
[17]	Chikan V, Fournier F and Leone S R 2006 J. Phys. Chem. A 110 2850
[18]	Zhang L, Yang J M and Jin F T 2011 Acta Phys. Sin. 60 045210 (in Chinese)
[19]	Zhou Q C 2006 Acta Phys. Sin. 55 4618 (in Chinese)
[20]	Zhang S D and Li H Y 2003 Acta Phys. Sin. 52 1297 (in Chinese)
[21]	Feng J, Wang J S, Gao Y F and Zhan M S 2001 Acta Phys. Sin. 50 1279 (in Chinese)
[22]	Guo H and Tang P 2009 Chin. Phys. B 18 3457
[23]	Guo H and Tang P 2013 Chin. Phys. B 22 054204
[24]	Chen C X, Ran Q, Yu S Q and Ma X X 1993 Chem. Phys. Lett. 203 307
[25]	Lindner J, Ermisch K and Wilhelm R 1998 Chem. Phys. 238 329
[26]	Butler L J, Krajnovich D and Lee Y T 1983 J. Chem. Phys. 79 1708
[27]	Nagata T, Suzuki M, Suzuki M, Kondow T and Kuchitsu K 1984 Chem. Phys. 88 163
[28]	Yang S X, Hou G Y, Dai J H, Chang C H and Chang B C 2010 J. Phys. Chem. A 114 4785
[29]	Chim R Y L 2003 Ph. D. thesis, University of Birmingham
[30]	Rebbet R E and Slagg N 1962 Bull. Soc. Chim. Belges. 71 709
[31]	Gray P, Yoffe A and Roselaar D 1955 L. Trans. Faraday Soc. 51 1489
[32]	Nicholson A J C 1961 Nature 190 143
[33]	Avouris P, Chan I Y and Loy M M T 1980 J. Photochem. 13 13
[34]	Rockney B H and Grant E R 1981 Chem. Phys. Lett. 79 15
[35]	Huo B H and Qu J T 1999 College Phys. 18 38 (in Chinese)
[36]	Scoles G 1988 Atomic and Molecular Beam Methods (New York: Oxford Press) pp. 33-35
[37]	"LIFBASE: Database and Spectral Simulation for Diatomic Molecules", ed. Luque J and Coquart D R, Merienne M F and Simon P C 1989 Planet. Space Sci. 37 1127
[38]	Wang X M, Yang S D, Chen Y Q and Yang X H 2006 Acta Opt. Sin. 26 1866
[39]	Fu G B, Deng L Z and Yin J P 2008 Chin. Phys. Lett. 25 923
[40]	Krems R V 2008 Phys. Chem. Chem. Phys. 10 4079
[41]	Loison J C and Bergeat A 2009 Phys. Chem. Chem. Phys. 11 655

Production of CH (A²Δ) by multi-photon dissociation of (CH₃)₂CO, CH₃NO₂, CH₂Br₂, and CHBr₃ at 213 nm

Production of CH (A²Δ) by multi-photon dissociation of (CH₃)₂CO, CH₃NO₂, CH₂Br₂, and CHBr₃ at 213 nm

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