✦ LIBER ✦

The CH3 3pz2A2″ ← X̃ 2A2″ 000 band at temperatures up to 1700 K investigated by REMPI spectroscopy

✍ Scribed by J. Heinze; N. Heberle; K. Kohse-Höinghaus

Publisher: Elsevier Science
Year: 1994
Tongue: English
Weight: 725 KB
Volume: 223
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(94)00469-2

No coin nor oath required. For personal study only.

✦ Synopsis

The @ band of the CH3 3p, 'AZ +g 2Az Rydberg transition has been recorded using the (2 + 1) resonance-enhanced multiphoton ionization (REMPI) of CH, at 333 nm. CHS was generated in a discharge flow reactor at room temperature and in a hotfilament-assisted chemical vapor deposition (HFCVD ) reactor at temperatures of 820 to 1700 K. By means of spectral simulation the rotational constants, B& and G,, and the rotational state-dependent predissociation rates of the 3p,*Az state were determined. Based on these constants and the well-known rotational and vibrational ground-state constants, relative intensities of the CHI REMPI spectra were calculated for temperatures up to 2300 K. These spectra were used to evaluate relative CHr concentrations from measured REMPI peak intensities of the dominant Q branch.

📜 SIMILAR VOLUMES

Massic heat capacities and Joule–Thomson

Massic heat capacities and Joule–Thomson coefficients of CH2FCF3(R134a) at pressures up to 30 MPa and temperatures between about 253 K and 523 K

✍ G. Ernst; J. Gürtner; H. Wirbser 📂 Article 📅 1997 🏛 Elsevier Science 🌐 English ⚖ 230 KB

The massic heat capacity cp = (1h/1T)p of 1,2,2,2-tetrafluoroethane (refrigerant R134a) was measured at 18 temperatures from 253 K to 523 K at pressures between 40 kPa and 30 MPa. The Joule-Thomson coefficient mJT = (1T/1p)h of this substance was measured at six temperatures from 333 K to 423 K at p