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Convection plays a role in thermionic emissions by enhancing heat transfer, which can improve the efficiency of thermionic devices. One application is in thermionic converters, where convection helps maintain optimal temperature gradients for electron emission. Additionally, convection can be utilized in cooling systems for thermionic emitters to prevent overheating. Lastly, convection can influence the design of thermal management systems in space applications, where thermionic devices may be used for power generation.

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