NONLINEAR SCATTERING AND ATTENUATION OF FIRST SOUND IN SUPERFLUID ^(4)He AT HIGH FREQUENCY AND TEMPERATURE NEAR T_(λ)  

作　　者：CHENG Jianchun WEI Rongjue 程建春;魏荣爵(Dept.of Biomedical Engineering,Nanjing Institute of Technology,P.R.China;Institute of Acoustics,Nanjing University,Nanjing)

机构地区：[1]Institute of Acoustics,Nanjing University,Nanjing

出　　处：《Chinese Physics Letters》1988年第6期261-264,共4页中国物理快报（英文版）

摘　　要：The attenuation coefficient of the impressed first sound due to the scattering of random background of the second sound is calculated.The result shows that this is an important factor which gives rise the attenuation of the first sound in the vicinity of transition temperature T_(λ) at very high frequencies of GHz range.The predicted value agrees with the measured data in order of magnitude.

关 键 词：MAGNITUDE VICINITY sound 

分 类 号：P31[天文地球—固体地球物理学]