%0 Journal Article
%T Probability density function of granular-gas velocity distribution<br>稀薄颗粒气体的运动速度几率分布函数
%A HOU MeiYing & LI YinChang Beijing National Laboratory for Condensed Matter Physics
%A Institute of Physics
%A Chinese Academy of Sciences
%A Beijing
%A China
%A <br>厚美瑛
%A 李寅阊
%J 科学通报
%D 2009
%I 
%X Velocity distribution of a quasi-2D dissipative granular gas in the limit of Knudsen regime is obtained experimentally in microgravity condition.The distribution is found to follow an exponential function,which deviates strongly from the Boltzmann distribution as in the molecular gas.A close form expression of the probability density function P(v)of the velocity distribution,derived from a modified Langevin equation,is found to fit the experimental data.Depending on the value of the fitting parameter a in t...
%K granular matter
%K velocity distribution
%K Langevin equation<br>颗粒物质
%K 速度分布律
%K 朗之万方程
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=01BA20E8BA813E1908F3698710BBFEFEE816345F465FEBA5&cid=7C7E63796F062382A606A3A9833B8C05&jid=B40D4BA57FF46E45205A09B4DC283152&aid=2996880681947D2D6E5B09FF12B2D252&yid=DE12191FBD62783C&vid=318E4CC20AED4940&iid=708DD6B15D2464E8&sid=6E73C7EB16CBAB68&eid=BFA4330C9764AE1A&journal_id=0023-074X&journal_name=科学通报&referenced_num=1&reference_num=0