In this paper, a low-pressure capacitively coupled plasma discharge sustained in an argon-oxygen mixture was studied in order to evaluate its properties in terms of inactivation of Staphylococcus aureus . The plasma parameters as electron temperature and plasma density were measured by the Langmuir probe ( N e ≈ 10 15 m −3 , T e ≈ 1.5 eV), while the neutral atom density was in the range of 10 21 m −3 . In the plasma phase, oxygen radicals were taken as reference of the reactive species with antimicrobial activity, and oxygen spectral lines, over a range of plasma process parameters, were investigated by the optical emission spectroscopy. Optimal plasma conditions were found, and a count reduction of 4 log in a few minutes of the bacterium proves the potentiality of an industrial grade plasma reactor as a sterilization agent.

中文翻译：

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通过带电和反应性血浆颗粒的协同作用灭活金黄色葡萄球菌

在本文中，研究了在氩气-氧气混合物中维持的低压电容耦合等离子体放电，以评估其在金黄色葡萄球菌灭活方面的特性。用朗缪尔探针（N e≈10 15 m -3，T e≈1.5 eV）测量等离子体参数，如电子温度和等离子体密度，而中性原子密度在10 21 m -3范围内。在等离子体相中，将氧自由基作为具有抗菌活性的反应性物种的参照，并通过光发射光谱法研究了一系列等离子体工艺参数上的氧谱线。发现了最佳的血浆条件，细菌数分钟内计数减少了4 log，证明了工业级血浆反应器作为杀菌剂的潜力。