%0 Journal Article
%T The effect of ion oscillation on the self-sustenance of low pressure electronegative discharge<br>离子振荡对低压脉冲负电性放电条件的影响
%A Wu Yan-Qing
%A Xiao Ti-Qiao
%A <br>吴衍青
%A 肖体乔
%J 物理学报
%D 2006
%I 
%X It is a common way to obtain ion-ion plasmas from pulsed electronegative discharges. The pumping pulse can excite ion oscillation at the early active glow stage of a pulsed electronegative discharge. To study the ion oscillation and its influence on the self-sustaining condition of the discharge, a global model was developed to describe the interaction between ion oscillation and a small amount of electrons in a low-pressure ion-ion plasma. A parameter r was introduced in this model to describe the momentum residual/loss of the electrons after the collision with the electrodes. It was found a critical value r=rc that differentiates two electron loss mechanisms. Another critical value r=4rc determines two different threshold of the electron density growth. Thus, the threshold of the electron density growth is non-monotonously depend on r. Therefore, there might be a gap existing in the parameter space of the self-sustaining condition. The above result has been examined by a particle-in-cell simulation with Monte-Carlo collision (PIC-MCC).
%K electronegative discharges
%K pulse discharge
%K ion oscillation<br>负电性放电
%K 脉冲放电
%K 离子振荡
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=07844FB7FB4414D2&yid=37904DC365DD7266&vid=E514EE58E0E50ECF&iid=DF92D298D3FF1E6E&sid=5DC287FD320E5453&eid=DAEAF74267DB6CA1&journal_id=1000-3290&journal_name=物理学报&referenced_num=0&reference_num=11