Dissociative recombination of protonated dimer ions H+•(HCOH)2 and H+•(CH3COH)2 with electrons at near thermal energies

被引：11
|
作者：
Glosík, J [1 ]
Plasil, R [1 ]
Zakouril, P [1 ]
Poterya, V [1 ]
机构：
[1] Charles Univ, Fac Math & Phys, Dept Elect & Vacuum Phys, Prague 8, Czech Republic
来源：
JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS | 2001年 / 34卷 / 14期
关键词：
D O I：
10.1088/0953-4075/34/14/302
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Formation of the protonated formaldehyde and acetaldehyde dimer ions, H+.(HCOH)(2) and H+.(CH3COH)(2), respectively, and their subsequent dissociative recombination with electrons was studied in a high-pressure flowing afterglow (HPFA) using the axially movable Langmuir probe. The obtained recombination rate coefficients are (3.3 +/- 1) x 10(-6) cm(3) s(-1) for H+.(HCOH)(2) and (1.4 +/- 0.5) X 10(-6) cm(3) s(-1) for H+.(CH3COH)(2), at 450 and 500 K, respectively. The evolution of the electron energy distribution function and the electron temperature in the recombination-dominated flowing afterglow plasma were also measured.
引用
收藏
页码：2781 / 2793
页数：13
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