Ortho-Para-Dependent Pressure Effects Observed in the Near Infrared Band of Acetylene by Dual-Comb Spectroscopy

Author(s): Kana Iwakuni, Sho Okubo, Koichi M. T. Yamada, Hajime Inaba, Atsushi Onae, Feng-Lei Hong, and Hiroyuki Sasada

The pressure broadening coefficient of the ${\nu }_1+{\nu }_3$ vibrational band of acetylene is experimentally observed to have a nuclear spin state dependence.

[Phys. Rev. Lett. 117, 143902] Published Thu Sep 29, 2016