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| 分子晶体中超声弛豫吸收机理的探讨 | |
| 引用本文： | 王耀俊,魏荣爵. 分子晶体中超声弛豫吸收机理的探讨[J]. 声学学报,1987,12(1): 55-63. DOI: 10.15949/j.cnki.0371-0025.1987.01.008 |
| 作者姓名： | 王耀俊 魏荣爵 |
| 作者单位： | 南京大学声学研究所(王耀俊)，南京大学声学研究所(魏荣爵) |
| 摘 要： | 本文考虑了分子晶体中内振子所有相邻能级之间存在的跃迁,给出了计算分子晶体中超声弛豫时间的新的表达式。对不同温度下萘单晶的超声吸收系数的计算表明,与Liebermann理论相比,我们得到的吸收随温度变化规律更符合实验结果。 |
| 收稿时间： | 1984-10-23 |
INVESTIGATION OF ULTRASONIC RELAXATION ABSORPTION IN MOLECULAR CRYSTALS |
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| WANG Yao-jung,WEI Rong-jue. INVESTIGATION OF ULTRASONIC RELAXATION ABSORPTION IN MOLECULAR CRYSTALS[J]. ACTA ACUSTICA,1987,12(1): 55-63. DOI: 10.15949/j.cnki.0371-0025.1987.01.008 | |
| Authors: | WANG Yao-jung WEI Rong-jue |
| Abstract: | By taking into account the transitions between all the neighbouring energy levels of the internal oscillators,a new calculation of ultrasonic absorption coefficients in molecular crystals is given. The ultrasonic absorption coefficients for molecular crystal naphthalene are estimated for different temperatures in terms of the improved theory. Good agreement is found between the predicted values and experimental results on the temperature dependence of absorption coefficient. |
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