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Role of Gravity in Competition with Tunable Body Forces on Czochralski

机译：重力在Czochralski与可调身体力竞争中的作用

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摘要

Experimental results are presented of the oscillatory convection of mercury melts cou- pled with crucible rotation under an imposed cusp-shaped magnetic field in a Czochralski crystal growing configuration. Regular baroclinic thermal waves are observed at rather low thermal Ross by number, Ro_t 1, i.e. at reduced gravity. These regular waves give way to irregular waves as Ro_t increases. The amplitude of temperature fluctuation under- neath a fixed non-rotating disk as a model crystal increases significantly after the tran- sition form the regular to irregular wave. It is shown that irregular thermal waves induced by the crucible rotation can be transformed into regular waves by the action of cusp magnetic field. Consequently, temperature fluctuations underneath the fixed dish are significantly suppressed.
机译：实验结果表明，在切克劳斯基（Czochralski）晶体生长结构中，在强加的尖端形磁场下，汞熔体的振荡对流与坩埚旋转耦合。在数量较低的Ross，Ro_t 1，即重力降低的情况下，观察到规则的斜压热波。随着Ro_t的增加，这些规则波将变为不规则波。从规则波到不规则波的转变之后，作为模型晶体的固定非旋转盘下的温度波动幅度显着增加。结果表明，由坩埚旋转引起的不规则热波可以在尖端磁场的作用下转变为规则波。因此，显着抑制了固定盘下方的温度波动。

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