Atmospheric pressure plasma jets are a promising tool for a variety of applications. However, the small size of atmospheric pressure plasma jets limits their use to small scale processes and materials treatment. To address this issue, this work describes how to increase the plasma volume without additional power supplies or circuitry. Instead, additional noble gas streams are positioned orthogonal to the jet’s direction of propagation which generates new plasma regions along these streams. This approach increases the plasma volume, which also increase the effective area available to interact with surfaces. The resulting augmented plasma is characterized with electrical, imaging, and time-integrated optical emission spectroscopy techniques. With these additional gas streams, the power required to drive the plasma jet increases sublinearly with the plasma volume, making this an attractive method to generate large area plasmas efficiently. The emission intensity of the He-air plasm...

中文翻译：

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通过使用额外的氦气气流来扩大大气压等离子体射流的体积

大气压等离子体射流是用于各种应用的有前途的工具。然而，大气压等离子射流的小尺寸将它们的使用限制在小规模的过程和材料处理中。为了解决这个问题，这项工作描述了如何在不增加电源或电路的情况下增加等离子体的体积。取而代之的是，将其他稀有气体流定位为与射流的传播方向正交，从而沿这些流生成新的等离子体区域。该方法增加了血浆体积，这也增加了可用于与表面相互作用的有效面积。所得的增强等离子体通过电，成像和时间积分光发射光谱技术进行表征。有了这些额外的气流，驱动等离子流所需的功率随等离子体积而线性增加，这使其成为一种有效地产生大面积等离子的有吸引力的方法。氦气等离子体的发射强度...