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.
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)
