Cold atmospheric argon plasma jets have shown to be very promising in medicine and they are being currently used for therapeutical uses such as the healing of wounds or the treatment of tumors. Because they run in the open atmosphere, they generate copious amounts of reactive oxygen and nitrogen species, which play an outstanding role in their biological action. But, in this kind of reactor, unknown amounts of air enter the plasma region depending on the experimental conditions, changing the chemistry in them, and eventually their effects. In this work, we propose a new spectroscopic method to measure the amount of air in argon non-thermal (including cold atmospheric) plasma jets through the collisional broadening of Ar I 840.86 and Ar I 842.46 nm emission lines. The method allows the simultaneous determination of the gas temperature. For validation purposes, it was applied to a microwave-induced plasma jet working at different operational conditions. Results were consistent wi...

中文翻译：

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通过研究空气对某些氩原子发射线碰撞展宽的影响，测量非热氩等离子体射流中的空气分数和气体温度

在医学上，冷大气氩等离子体射流已经显示出非常有前途的，并且它们目前被用于治疗用途，例如伤口的愈合或肿瘤的治疗。由于它们在露天环境中运行，因此会产生大量的活性氧和氮，这在其生物作用中发挥了重要作用。但是，在这种反应器中，未知量的空气会根据实验条件进入等离子体区域，从而改变其中的化学性质并最终改变其作用。在这项工作中，我们提出了一种新的光谱学方法，通过Ar I 840.86和Ar I 842.46 nm发射线的碰撞加宽来测量氩非热（包括冷大气）等离子体射流中的空气量。该方法允许同时确定气体温度。为了验证目的，将其应用于在不同操作条件下工作的微波感应等离子体射流。结果与...一致