ABSORPTION CROSS SECTION OF GASEOUS ACETYLENE AT 85 K IN THE WAVELENGTH RANGE 110-155 nm

作者：Cheng Bing Ming^*; Chen Hui Fen; Lu Hsiao Chi; Chen Hong Kai; Alam M S; Chou Sheng Lung; Lin Meng Yeh

来源：Astrophysical Journal, The - Supplement Series, 2011, 196(1).

DOI：10.1088/0067-0049/196/1/3

• astronomical databases: miscellaneous
• molecular data
• techniques: spectroscopic
• ultraviolet: general

Absorption spectra and absorption cross sections of gaseous acetylene, C(2)H(2), at 298 and 85 K were measured in the wavelength range 110-155 nm with a slit-jet system coupled to a synchrotron as a source of vacuum ultraviolet light. Using published spectral parameters of C(2)H(2), we simulated the absorption profile for the Rydberg transition to state 4R(0) in the range 124.6-125.1 nm, according to which the temperature of the jet-expanded sample at stagnation pressure 200 Torr is 85 +/- 5 K. Our cross sections of C(2)H(2) are applicable for determining properties sensitive to temperature for diagnostic work on Saturn and Titan.

• 出版日期2011-9