Study of Ion Formation and Evolution in Ambient Corona Discharge
Study of Ion Formation and Evolution in Ambient Corona Discharge
复制标题
环境电晕放电中离子形成和演化的研究
DOI:
--
复制
发表时间:
2011
期刊:
影响因子:
--
通讯作者:
M. Takayama
中科院分区:
文献类型:
--
作者:
K. Sekimoto;M. Takayama
Ambient corona discharge has been used as an ionizer in a wide range of research and industrial fi elds such as environmental, analytical and aerosol sciences, and possibly even commercial electric appliances. Terminal ions produced via ion evolutions through successive ion-molecule reactions in corona discharge can readily and effi ciently supply the charge for ionization in ambient air. Despite substantial progress in the application of corona discharge, the elementary processes involved in terminal ion formation and evolution are not yet well understood. It has been reported that negative ion evolution is rather complex compared to that of positive ions, and that it is diffi cult to regulate the reproducible formation of specifi c negative ion species. We have recently established an atmospheric pressure corona discharge system containing a specifi c corona needle that successfully leads to regular and reproducible generation of various positive and negative ions originating from ambient air. The system coupled with mass spectrometers made it possible to study the relationship between terminal ion formation and discharge conditions. In this paper, the formation and evolution mechanism of terminal ions such as H3O, HO−, NOx and COx depending on the electric fi eld strength on the needle tip and the resulting kinetic energy of electrons accelerated at the tip will be described.
DOI:
--
发表时间:
2010
期刊:
影响因子:
--
作者:
K.Sekimoto;M.Takayama
通讯作者:
M.Takayama
DOI:
--
发表时间:
2011
期刊:
影响因子:
--
作者:
K.Sekimoto;M.Takayama
通讯作者:
M.Takayama
DOI:
--
发表时间:
2011
期刊:
影响因子:
--
作者:
K.Sekimoto;M.Takayama
通讯作者:
M.Takayama