研究目的
利用原位窄带量子级联激光（QCL）吸收光谱法，研究N2对脉冲辉光放电中气体温度、转动温度以及CO2和CO振动温度随时间演变的影响。
研究成果
该研究证明了量子级联激光吸收光谱法在测量脉冲辉光放电中温度随时间演变的有效性。研究强调了氮气掺混对二氧化碳和一氧化碳振动温度的显著影响，揭示了非平衡状态以及氮气作为二氧化碳不对称伸缩能级能量库的作用。
研究不足
该研究的局限性在于假设了转动能级与振动能级之间无耦合，这一假设对于较高振动能级而言准确性会降低。此外，仪器展宽效应和快速通过效应可能导致测量结果存在不确定性。
实验装置包含三个共线量子级联激光器（QCLs），用于扫描2179.20至2253.51 cm?1范围内的三个区域，以测量脉冲辉光放电中CO2和CO跃迁的吸收光谱。等离子体工作周期为5-10毫秒开关循环，放电电流为50毫安，气压约为6.7毫巴。通过拟合程序从测量的吸收光谱中提取温度数据。
独家科研数据包，助您复现前沿成果，加速创新突破
获取完整内容-
DC-coupled detector
PDAVJ8
Thorlabs
Used to record the spectral tuning and intensity variations of the lasers.
-
Oscilloscope
Waverunner 610Zi
LeCroy
Used to record detector signals.
-
Pulse delay generator
DG535
Stanford Research Systems
Used to shift the plasma trigger with respect to the master clock from the QCL driver.
-
FTIR spectrometer
Vertex 80v
Bruker
Used to monitor the formation of products downstream.
-
Quantum Cascade Laser
TO3-L-53, TO3-L-54, TO3-L-55
Alpes Lasers
Used for scanning absorption spectra of CO2 and CO transitions.
-
Neutral density filter
NDIR03B, NDIR10B
Thorlabs
Used to attenuate the laser beam.
-
Beam splitter
BBAR-2500-14000 nm, 25.4x0.5 mm
Spectrogon
Used to redirect part of the laser beam for calibration.
-
Neoplas Q-MACS Basic MC multichannel controller
Used to drive three QCL laser heads.
-
Germanium etalon
3 inch-long
Used for wavelength calibration.
-
High voltage power amplifier
10/40A-HS
Trek
Used to amplify the pulse for the plasma.
-
Mass flow controller
F-201CV
Bronkhorst
Used to control the gas flow.
-
Dry Roots pump
ACP 15
Pfei?er
Used to maintain the pressure in the reactor.
-
Automatic valve
EVR 116
Pfei?er
Used to adjust the effective pumping speed.
-
Feedback controller
RVC 300
Pfei?er
Used to control the pressure.
-
Pressure gauge
CMR 263
Pfei?er
Used to measure the pressure.
-
登录查看剩余13件设备及参数对照表
查看全部
