THE VACANCY DIFFUSION IN BCC HE-3 CRYSTALS

被引：0
作者：
DYUMIN, NE
BOIKO, VV
ZUEV, NV
GRIGORIEV, VN
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FIZIKA NIZKIKH TEMPERATUR | 1995年 / 21卷 / 05期
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O59 [应用物理学];
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摘要：
The diffusive now in bcc crystals of He-3 is measured For three molar volumes. The self-diffusion coefficient of 3He is determined in the temperature range 0.45-0.7 K, along with the vacancy diffusion coefficient which is Found to be temperature independent. In the model of wide-zone quasi-particles, the method is proposed for direct determination of the vacancion zone width Delta(upsilon), through a comparison of experimental data on self-diffusion and heat capacity. The Delta(upsilon) values obtained are much larger than the temperature, which proves the validity of the used model of wide-zone quasi-particles.
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页码：509 / 513
页数：5
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