Quenching of the 750.4 nm argon actinometry line by H2 and several hydrocarbon molecules

被引：20

作者：

Francis, A ^{[1
]}

Czarnetzki, U

Dobele, HF

Sadeghi, N

机构：

[1] Univ Essen Gesamthsch, Inst Laser & Plasmaphys, D-45117 Essen, Germany

[2] Univ Grenoble 1, Spectrometrie Phys Lab, CNRS, UMR 5588, F-38402 St Martin Dheres, France

来源：

APPLIED PHYSICS LETTERS | 1997年 / 71卷 / 26期

关键词：

D O I：

10.1063/1.120555

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The quenching rate of the 750.4 nm actinometer line in argon by H-2 and several hydrocarbons (CH4, C2H2, C2H4, C2H6) has been determined. Argon atoms at room temperature are excited by two-photon excitation at 184 nm to the 4p'[1/2](0) state, and the decay time of the fluorescence emission at 750.4 nm is measured. The quenching rates are inferred from the change of the decay time with the pressure of the quenching gas. For hydrocarbons, the quenching rates are of the order of 10(-9) cm(3) s(-1). The radiative lifetime of the 4p'[1/2](0) is found to be 24 ns. (C) 1997 American Institute of Physics. [S0003-6951(97)03552-3].

引用

页码：3796 / 3798

页数：3

共 25 条

[1] Quenching rate constants and product assignments for reactions of Xe(7p[3/2](2), 7p[5/2](2), and 6p'[3/2](2)) atoms with rare gases, CO, H-2, N2O, CH4, and halogen-containing molecules [J].

Alekseev, V ;

Setser, DW .

JOURNAL OF PHYSICAL CHEMISTRY, 1996, 100 (14) :5766-5780

[2] A pulsed source for Xe(6s[3/2](1)) and Xe(6s'[1/2](1)) resonance state atoms using two-photon driven amplified spontaneous emission from the Xe(6p) and Xe(6p') states [J].

Alekseev, VA ;

Setser, DW .

JOURNAL OF CHEMICAL PHYSICS, 1996, 105 (11) :4613-4625

[3] Concentration of atomic hydrogen in the ground state in a CH4-H-2 microwave plasma [J].

Barshilia, HC ;

Vankar, VD .

JOURNAL OF APPLIED PHYSICS, 1996, 80 (07) :3694-3698

[4] QUENCHING OF 2-PHOTON-EXCITED H(3S, 3D) AND O(3P 3P2,1,0) ATOMS BY RARE-GASES AND SMALL MOLECULES [J].

BITTNER, J ;

KOHSEHOINGHAUS, K ;

MEIER, U ;

JUST, T .

CHEMICAL PHYSICS LETTERS, 1988, 143 (06) :571-576

[5]

BOFFARD JB, 1996, B AM PHYS SOC, V41, P1322

[6] RADIATIVE LIFETIMES AND 2-BODY DEACTIVATION RATE CONSTANTS FOR AR(3P5, 4P) AND AR(3P5,4P') STATES [J].

CHANG, RSF ;

SETSER, DW .

JOURNAL OF CHEMICAL PHYSICS, 1978, 69 (09) :3885-3897

[7]

CHILTON JE, 1996, B AM PHYS SOC, V41, P1322

[8] OPTICAL-EMISSION SPECTROSCOPY OF REACTIVE PLASMAS - A METHOD FOR CORRELATING EMISSION INTENSITIES TO REACTIVE PARTICLE DENSITY [J].

COBURN, JW ;

CHEN, M .

JOURNAL OF APPLIED PHYSICS, 1980, 51 (06) :3134-3136

[9] Species characterization for a direct-current-biased hot filament growth of diamond using spatial resolved optical emission spectroscopy [J].

Cui, JB ;

Ma, YR ;

Fang, RC .

APPLIED PHYSICS LETTERS, 1996, 69 (21) :3170-3172

[10] Evidence of the role of positive bias in diamond growth by hot filament chemical vapor deposition [J].

Cui, JB ;

Fang, RC .

APPLIED PHYSICS LETTERS, 1996, 69 (23) :3507-3509

← 1 2 3 →