增强的催化探测器设计,用于绘制等离子体光后光中的激素密度
Anja Herrmann1, Patrick M Krebaum1, Susanta Bera1
1Dutch Institute for Fundamental Energy Research (DIFFER), Eindhoven 5600 MB, Eindhoven, The Netherlands.
The journal of physical chemistry. A
|November 11, 2024
概括
这项研究引入了一种改进的激素探针,用于等离子体光后分析. 增强的探测器通过分析热流来准确量化基密度,这对于基于等离子体的化学过程至关重要.
科学领域:
- 血科学是一门科学课.
- 化学工程是化学工程的重要组成部分.
- 表面科学是一门学科.
背景情况:
- 电气化化学过程越来越多地需要用于等离子体激活物种的传感器,例如激素.
- 激素探测器通过外热再组合热在现场量化激素密度.
- 将再组合热与其他热流区分开来是一项重大挑战.
研究的目的:
- 开发和验证一个先进的激素探测器,用于精确的激素密度量化等离子体后照.
- 通过结合散热器来改进激光探头测量中的热流分析.
- 要区分复合加热与其他热流,如辐射和导电.
主要方法:
- 使用了一种双热电偶设置,其中包含一个催化装置和一个参考热电偶.
- 集成了一个监控温度的散热器来确定导电和辐射热流.
- 采用了同时在反应堆内进行探头测量和反应堆壁温度的红外成像.
主要成果:
- 证明了双热电偶比单个热电偶在辐射热分析中的优势.
- 通过使用散热器添加成功量化导电和辐射热流.
- 在等离子体后照中绘制了原子密度图,证实了探测器的准确性.
结论:
- 开发的激素探测器提供了准确的,空间分辨的激素密度测量.
- 热流分析方法减少了模两可,提高了测量可靠性.
- 证实了三体重组作为主要的N基重组途径,其速率常数为k_rec = (2.0 ± 0.9) ·10^-44 m^6/s.
相关概念视频
Inductively Coupled Plasma Atomic Emission Spectroscopy: Principle
526
Inductively coupled plasma (ICP) is the most widely used plasma source in atomic emission spectroscopy (AES), also known as Inductively Coupled Plasma Optical Emission Spectroscopy (ICP-OES). The ICP source, or torch, consists of three concentric quartz tubes with argon gas flowing through them. A spark from a Tesla coil initiates the ionization of argon, generating a high-temperature plasma.
The ions and electrons produced interact with the fluctuating magnetic field created by a water-cooled...
The ions and electrons produced interact with the fluctuating magnetic field created by a water-cooled...
526
Atomic Emission Spectroscopy: Lab
149
AES is a powerful analytical technique, especially effective when used with plasma sources, producing abundant spectra in characteristic emission lines. The Inductively Coupled Plasma (ICP), in particular, yields superior quantitative analytical data due to its high stability, low noise, low background, and minimal interferences under optimal experimental conditions. However, newer air-operated microwave sources are emerging as promising alternatives that could be more cost-effective than...
149
Atomic Emission Spectroscopy: Overview
1.6K
Atomic emission spectroscopy (AES) is an analytical technique used to determine the elemental composition of a sample by analyzing the light emitted from excited atoms. In AES, atoms in a sample are excited to higher energy levels by thermal energy from high-temperature sources, such as plasma, arcs, or sparks. When these excited atoms return to lower energy states, they emit light at specific wavelengths characteristic of each element. The resulting atomic emission spectrum, which consists of...
1.6K
Atomic Emission Spectroscopy: Interference
173
In atomic emission spectroscopy (AES), high-temperature atomizers excite a broad range of elements and molecules that generate complex emissions from sources such as oxides, hydroxides, and flame combustion products in the flame or plasma. Several strategies can be employed to minimize spectral interferences caused by overlapping emission lines or bands. These include increasing instrument resolution, choosing alternative emission lines, optimally placing the detector in low-background regions,...
173


