Scanning-wavelength laser absorption measurements were carried out to determine the line strengths and broadening coefficients due to collisions of N₂, O₂, Ar, He, and NH₃ for 12 ammonia transitions in the Q-branch of the v₂ fundamental band near 10.4 µm. The measurements were conducted at 296 K using a high-resolution quantum cascade laser and span the frequency range of 957.5–963.0 cm⁻¹. The absorption features were fitted with a Voigt profile to obtain the spectroscopic parameters. The temperature-dependence of the Ar-broadening coefficients for two transitions, suitable for high-temperature NH₃ detection, were measured using a shock tube for the temperature range of 921–1767 K. The reported spectroscopic parameters are useful for developing NH₃ detection sensors, especially for high-temperature applications involving chemical reactions.

进行扫描波长激光吸收测量以确定在附近v ₂基带的Q分支中由于N ₂，O ₂，Ar，He和NH _3的碰撞引起的线强度和加宽系数，用于12个氨过渡10.4微米。使用高分辨率量子级联激光器在296 K下进行测量，测量范围为957.5–963.0 cm ^-1。吸收特征配备有Voigt轮廓，以获取光谱参数。两个过渡过程中Ar扩散系数的温度相关性，适用于高温NH ₃使用激波管在921-1767 K的温度范围内进行了检测。报告的光谱参数对于开发NH ₃检测传感器非常有用，特别是对于涉及化学反应的高温应用。