盐水溶液中高频脉冲放电特性  

High-Frequency Pulse Discharge Characteristics in Saline Solution

作　　者：董山林 李孜 DONG Shanlin;LI Zi(School of Mechanical Engineering,University of Shanghai for Science and Technology,Shanghai 200093,China)

机构地区：[1]上海理工大学机械工程学院,上海200093

出　　处：《电子科技》2025年第4期10-15,共6页Electronic Science and Technology

基　　金：国家自然科学基金(12205192)。

摘　　要：针对盐水溶液中高频脉冲放电的特性问题,文中设计了一种针-针式反应器结构来研究脉冲电压下针-针放电的放电特性。文中测试并分析了未产生放电模式下和产生放电模式下不同的电特性和实验特征,测量了从未放电到放电过程中阻抗和电压幅值的关系,并证明了在该过程中蒸汽层的变化对放电产生影响。在放电的等离子体发射光谱中,氢氧根(OH)自由基在306~312 nm波段的特征发射带影响生物组织切除。文中还建立了放电时的有限元多物理场模型,结果表明蒸汽层的厚度约是100μm,等离子体的电子密度约为1016 cm^(-3)。In view of the characteristics of high frequency pulse discharge in saline solution,a pin-needle reactor structure is designed to study the discharge characteristics of pin-needle discharge under pulse voltage.The different electrical characteristics and experimental characteristics are tested and analyzed,and the relationship between impedance and voltage amplitude from no discharge to discharge is measured.It is proved that the change of steam layer can affect discharge.In the plasma emission spectrum of discharge,the characteristic emission band of OH free radical in the band of 306~312 nm affects the biological tissue excision.The finite element multi-physics model of the discharge is established.The results show that the thickness of the vapor layer is about 100μm and the electron density of the plasma is about 1016 cm^(-3).

关 键 词：正脉冲 电压特性 电流特性 等离子体光谱 光谱拟合 电子密度 有限元多物理场模型 等离子体放电 

分 类 号：TP23[自动化与计算机技术—检测技术与自动化装置]