FLASH PYROLYSIS NOZZLE FOR GENERATION OF RADICALS IN A SUPERSONIC JET EXPANSION

被引：354

作者：

KOHN, DW

CLAUBERG, H

CHEN, P

机构：

来源：

REVIEW OF SCIENTIFIC INSTRUMENTS | 1992年 / 63卷 / 08期

关键词：

D O I：

10.1063/1.1143254

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

A method for the high-temperature generation of reactive species in supersonic molecular beams has been developed. Pyrolysis temperatures (25-1800-degrees-C) can be maintained for longer than 100 h for extended experiments. Short contact time (almost-equal-to 10-mu-s) of the seeded (< 1 Torr partial pressure in 2 atm inert carrier gas) precursor molecules suppresses recombination of the product radicals. Number densities for radicals are estimated to be almost-equal-to 10(14) cm-3 at the sonic orifice with radical fluxes of almost-equal-to 10(16) s-1.

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页码：4003 / 4005

页数：3

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