We present, for the first time, shock-tube measurements of the absorption of infrared radiation by pure CO2 near 4 µm up to the temperature of 1200 K. The experimental values are in good agreement with previous determinations up to 800 K. These results demonstrate the interesting point of this new measurement technic and the investigated temperature and pressure ranges are extended toward those of the combustion media. Comparisons with calculations confirm the strongly sublorentzian behavior of the far wings of CO2 absorption lines; the accuracy of previously published models based on empirical corrections to the Lorentzian profile is also shown.
The Japanese Journal of Applied Physics (JJAP) is an international journal for the advancement and dissemination of knowledge in all fields of applied physics. The journal publishes articles dealing with the applications of physical principles as well as articles concerning the understanding of physics that have particular applications in mind. The journal not only covers all aspects of modern technology such as semiconductor devices including VLSI technology, photonic devices, superconductors, and magnetic recording but also covers other diverse areas such as plasma physics, particle accelerators, nanoscience and technology, and applied bioscience. Articles in interdisciplinary areas with potential technological implications are strongly encouraged.
JJAP is published monthly and is for Regular Papers, Rapid Communications, Brief Notes, and Review Papers. Rapid Communications are published bimonthly online. In addition, several Special Issues are published each year. These contain monographs from international conferences and up-to-date findings of research groups.
Comments and replies are also published. This section includes the comments on papers previously published in JJAP, and a replies to those.
There is also a special section, “Selected Topics in Applied Physics” that highlights specific topics in applied physics. This section features rapidly developing current trends in the selected research area.
The temperature dependence of the high frequency far wings of the self-broadened CO2 lines has been investigated in the 2400–2600-cm-1 spectral region. The temperature dependence of the corrective shape factor X(σ,T) is demonstrated for the first time.
