Absolute density measurements of ammonia synthetized in N-2-H-2 mixture discharges

被引：47

作者：

Amorim, J ^{[1
]}

Baravian, G ^{[1
]}

Sultan, G ^{[1
]}

机构：

[1] UNIV PARIS 11,CTR ORSAY,CNRS,LAB PHYS GAZ & PLASMA,F-91405 ORSAY,FRANCE

来源：

APPLIED PHYSICS LETTERS | 1996年 / 68卷 / 14期

关键词：

D O I：

10.1063/1.116293

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Measurements of absolute density of ammonia in nitrogen-hydrogen mixture de glow discharges were performed by employing photofragment translational spectroscopy associated with laser induced fluorescence (LIF) of the H ground state atoms. The dissociation energy of ammonia using the photolysis at 205 nm was determined to be (4.34+/-0.07) eV. The H atom LIF measurements were calibrated by vacuum ultraviolet absorption spectroscopy on the Lyman-alpha (121 nm) line. The ammonia synthesized in the discharge has a maximum density of about 8X10(12) cm(-3) for a 75% H-2-25% N-2 mixture, a discharge current of 50 mA and a pressure of 2 Torr. (C) 1996 American Institute of Physics.

引用

页码：1915 / 1917

页数：3

共 12 条

[1] PRODUCTION OF N, H, AND NH ACTIVE SPECIES IN N-2-H(2) DC FLOWING DISCHARGES [J].

AMORIM, J ;

BARAVIAN, G ;

RICARD, A .

PLASMA CHEMISTRY AND PLASMA PROCESSING, 1995, 15 (04) :721-731

[2]

AMORIM J, 1994, J APPL PHYS, V76, P3

[3] PHOTODISSOCIATION OF AMMONIA IN A]-X ABSORPTION SYSTEM .2. TRANSLATIONAL EXCITATION OF HYDROGEN-ATOMS PRODUCED, AND MECHANISM OF PREDISSOCIATION [J].

BACK, RA ;

KODA, S .

CANADIAN JOURNAL OF CHEMISTRY-REVUE CANADIENNE DE CHIMIE, 1977, 55 (08) :1387-1395

[4]

Bletzinger P, 1995, CHEM PHYS LETT, V247, P584, DOI 10.1016/0009-2614(95)01250-8

[5]

DUNLOP JR, 1992, PLASMA CHEM PLASMA P, V12, P1

[6]

EREMIN EN, 1971, RUSS J PHYS CHEM, V45, P5

[7]

GANGULY BN, 1995, 12 INT S PLASM CHEM, P391

[8] NONEQUILIBRIUM ELECTRONIC AND VIBRATIONAL KINETICS IN H-2-N-2 AND H-2 DISCHARGES [J].

GARSCADDEN, A ;

NAGPAL, R .

PLASMA SOURCES SCIENCE & TECHNOLOGY, 1995, 4 (02) :268-280

[9]

Herzberg G., 1966, ELECT SPECTRA POLYAT

[10] ELECTRON AND VIBRATIONAL KINETICS IN AN N2-H2 GLOW-DISCHARGE WITH APPLICATION TO SURFACE PROCESSES [J].

LOUREIRO, J ;

RICARD, A .

JOURNAL OF PHYSICS D-APPLIED PHYSICS, 1993, 26 (02) :163-176

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