Bursts of intermediate ions in atmospheric air

被引：112

作者：

Horrak, U ^{[1
]}

Salm, J ^{[1
]}

Tammet, H ^{[1
]}

机构：

[1] Tartu State Univ, Inst Environm Phys, EE-2400 Tartu, Estonia

来源：

JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES | 1998年 / 103卷 / D12期

关键词：

D O I：

10.1029/97JD01570

中图分类号：

P4 [大气科学（气象学）];

学科分类号：

0706 ; 070601 ;

摘要：

The mobility spectrum of air ions has been measured at Tahkuse Observatory in Estonia for several years. The average concentration of intermediate ions with mobilities of 0.05-0.5 cm(2) V-1 s(-1) in atmospheric air is about 50 cm(-3). On the level of this low background, high concentration bursts of intermediate air ions occur occasionally. A burst can be followed by subsequent evolution of intermediate ions into larger ones. To explain the bursts of intermediate air ions, two hypotheses can be advanced: (1) A burst of neutral particles occurs due to homogeneous nucleation, and the particles are charged by the attachment of cluster ions. (2) The cluster ions grow by ion-induced nucleation in proper environmental conditions.

引用

页码：13909 / 13915

页数：7

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