The generation of cold physical plasma at atmospheric pressure (cold atmospheric plasma: CAP) generates different reactive molecular species as well as radiation in the ultraviolet (UV) range. The therapy of tumor diseases has proven to be a new promising area of application for CAP treatment. With regard to the routine use of CAP in cancer therapy, however, application safety must be ensured both for the patient and for the operator. In this study, the intensity of UVC radiation of the CAP device MiniJet-R (HF Technik, Aachen, Germany) was measured in the range from 220 to 280 nm depending on various device-specific parameters. Depending on the distance to the CAP flame, the UVC intensity reaches values up to 124.5±11 mW m. It should be noted here that the UVC radiation generated by the CAP is emitted in all orientations in the room but is also shielded by the geometry of the handpiece of the CAP device. The device-specific settings for the flow rate of the carrier gas, argon, and the power level at the high-frequency (HF) generator of the CAP device also influence the intensity of the UVC radiation. With regard to the medical use of the CAP device, it can be stated that there is an exposure to UVC radiation, which, depending on the duration of treatment, can also be above the maximum value legally specified in Europe. Shielding components on the CAP device can reduce UVC exposure to the operator as well as adverse side effects to the patient.

中文翻译：

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冷物理等离子体发生装置从220海里到280海里的紫外线辐射。

在大气压力下产生冷物理等离子体（冷大气等离子体：CAP）会产生不同的反应性分子种类以及紫外线（UV）范围内的辐射。事实证明，肿瘤疾病的治疗是CAP治疗的一个新的有希望的应用领域。但是，关于在癌症治疗中常规使用CAP，必须确保患者和操作者的应用安全性。在这项研究中，根据各种设备特定的参数，在220至280 nm的范围内测量了CAP设备MiniJet-R（HF Technik，亚琛，德国）的UVC辐射强度。根据与CAP火焰的距离，UVC强度达到的值高达124.5±11 mW m。在此应该注意的是，由CAP产生的UVC辐射在房间内的所有方向上均被发射，但也被CAP设备的机头的几何形状屏蔽。CAP设备的高频（HF）发生器的载气，氩气流速和设备功率级别的设备特定设置也会影响UVC辐射的强度。关于CAP设备的医疗用途，可以说存在UVC辐射，这取决于治疗时间，也可能高于欧洲法律规定的最大值。CAP设备上的屏蔽组件可以减少UVC对操作员的暴露以及对患者的不利副作用。氩气以及CAP设备的高频（HF）发生器的功率水平也会影响UVC辐射的强度。关于CAP设备的医疗用途，可以说存在UVC辐射，这取决于治疗时间，也可能高于欧洲法律规定的最大值。CAP设备上的屏蔽组件可以减少UVC对操作员的暴露以及对患者的不利副作用。氩气以及CAP设备的高频（HF）发生器的功率水平也会影响UVC辐射的强度。关于CAP设备的医疗用途，可以说存在UVC辐射，这取决于治疗时间，也可能高于欧洲法律规定的最大值。CAP设备上的屏蔽组件可以减少UVC对操作员的暴露以及对患者的不利副作用。