Q. Ma
Columbia University
13 Papers
130 Citations
Q. Ma is an academic researcher from Columbia University. The author has contributed to research in topics: Spectral line & Detailed balance. The author has an hindex of 7, co-authored 13 publications. Previous affiliations of Q. Ma include Goddard Space Flight Center.
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Papers
Water-vapor continuum absorption in the 800-1250 cm-1 spectral region at temperatures from 311 to 363 K
TL;DR: In this article, the authors used a 2-m base white cell coupled with the BOMEM DA3.002 FTIR spectrometer to obtain 200 pure water-vapor spectra covering the region from 800 to 3500 cm−1 with resolution of 0.1 cm− 1 at temperatures 311, 318, 325, 339, 352, and 363 K.
Theory of the water vapor continuum and validations
R. H. Tipping,Q. Ma +1 more
TL;DR: A far-wing line shape theory based on the binary collision and quasistatic approximations that is applicable for both the low and high-frequency wings of the vibration-rotational bands has been developed in this paper.
67
Theoretical calculation of the translation-rotation collision-induced absorption in N2–N2, O2–O2, and N2–O2 pairs
TL;DR: In this article, the translation-rotation collision-induced spectra of N 2 −N 2, O 2 −O 2 and N 2 -O 2 mixtures are calculated theoretically, using the matrix elements for quadrupole and hexadecapole moments and the isotropic and anisotropic polarizabilities obtained previously from a global analysis of the fundamental band spectra.
39
The frequency detuning and band‐average approximations in a far‐wing line shape theory satisfying detailed balance
Q. Ma,R. H. Tipping,C. Boulet +2 more
TL;DR: In this paper, the authors developed the basic formalism of a far-wing line shape theory that satisfies the detailed balance principle, and applied the theory to a calculation of the farwing absorption of the ν3 band of CO2 perturbed by Ar.
21
Two Dimensional Symmetric Correlation Functions of the S Operator and Two Dimensional Fourier Transforms: Considering the Line Coupling for P and R Lines of Linear Molecules
TL;DR: Numerical calculations have been carried out for the half-widths of both the isotropic Raman Q lines and the infrared P and R lines of C2H2 broadened by N2, and new calculated values are significantly reduced and become closer to measurements.