Cold atmospheric helium plasma jet in humid air environment
Cold atmospheric helium plasma jet in humid air environment
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DOI：
10.1063/1.5086177
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发表时间：
2019-04
影响因子：
3.2
通讯作者：
Li Lin;Yu-Fong Lyu;B. Trink;J. Canady;M. Keidar
中科院分区：
文献类型：
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作者：
Li Lin;Yu-Fong Lyu;B. Trink;J. Canady;M. Keidar
冷大气压等离子体射流（CAPJ）是一种最新的和最有前途的技术，用于潜在的癌症治疗和其他生物医学应用。由于与空气直接接触，射流对局部环境的参数如相对湿度（RH）敏感。在RH控制室中，用瑞利微波散射法测量了氦CAPJ的电子密度，并用光谱仪记录了它的光发射谱。结果表明，随着相对湿度的增加，电子密度沿着降低，而在高放电电压下，湿度对OES的影响增强。这些趋势意味着电子能量分布函数（EEDF）的移动，由于额外的附件的电子作为这种现象背后的物理。这一假设是支持的平均电子温度和EEDF的基础上，我们测量的电子密度和等离子体化学模型的计算。因此，这份报告是未来的稳定发展的基础，这是一个可靠的生物医学应用，如主动控制回路，使CAPJ免疫任何意外的环境干扰，在基于等离子体的癌症surgery.Cold atmospheric plasma jet（CAPJ）是一个最新的和最有前途的技术，为潜在的癌症治疗和其他生物医学应用。由于与空气直接接触，射流对局部环境的参数如相对湿度（RH）敏感。在RH控制室中，用瑞利微波散射法测量了氦CAPJ的电子密度，并用光谱仪记录了它的光发射谱。结果表明，随着相对湿度的增加，电子密度沿着降低，而在高放电电压下，湿度对OES的影响增强。这些趋势意味着电子能量分布函数（EEDF）的移动，由于额外的附件的电子作为这种现象背后的物理。这一假设是支持的计算的平均电子温度和EEDF的基础上，我们测量的电子密度…
Cold atmospheric plasma jet (CAPJ) is one of the latest and most promising techniques for potential cancer treatment and other biomedical applications. Due to the direct contact of air, the jet is sensitive to the parameters of the local environment such as relative humidity (RH). In a RH controlled chamber, the electron density of a helium CAPJ is measured using the Rayleigh microwave scattering method, and its optical emission spectroscopy (OES) is recorded using a spectrometer. A decreasing electron density along with the increasing RH is thus revealed, while the humidity effect on OES at a high discharge voltage is increased. These trends imply a shift of electron energy distribution function (EEDF) due to extra attachments of electrons as the physics behind such a phenomenon. This hypothesis is supported by a computation of the mean electron temperature and EEDF based on the electron density we measured and a plasma chemistry model. Therefore, this report is a basis of future CAPJ stabilization development, which is a necessity of reliable biomedical applications, such as an active control loop to make CAPJ immune to any accident environmental disturbance during a plasma-based cancer surgery.Cold atmospheric plasma jet (CAPJ) is one of the latest and most promising techniques for potential cancer treatment and other biomedical applications. Due to the direct contact of air, the jet is sensitive to the parameters of the local environment such as relative humidity (RH). In a RH controlled chamber, the electron density of a helium CAPJ is measured using the Rayleigh microwave scattering method, and its optical emission spectroscopy (OES) is recorded using a spectrometer. A decreasing electron density along with the increasing RH is thus revealed, while the humidity effect on OES at a high discharge voltage is increased. These trends imply a shift of electron energy distribution function (EEDF) due to extra attachments of electrons as the physics behind such a phenomenon. This hypothesis is supported by a computation of the mean electron temperature and EEDF based on the electron density we measure...