| Issue |
A&A
Volume 455, Number 3, September I 2006
|
|
|---|---|---|
| Page(s) | 1161 - 1164 | |
| Section | Atomic, molecular, and nuclear data | |
| DOI | https://doi.org/10.1051/0004-6361:20065185 | |
| Published online | 16 August 2006 | |
Improved rest frequencies for the submillimetre-wave spectrum of SiN
Dipartimento di Chimica “G. Ciamician”, via F. Selmi 2, 40126 Bologna, Italy e-mail: [luca.bizzocchi;claudio.degliesposti;luca.dore]@unibo.it
Received:
10
March
2006
Accepted:
17
May
2006
The submillimetre-wave spectrum of the SiN radical has been investigated in the laboratory
using a source-modulation microwave spectrometer equipped with a negative glow discharge
cell.
SiN was produced in a SiCl4/N2 discharge plasma.
Twenty-one new fine and hyperfine components up to 
were observed reaching
a frequency as high as 740 GHz.
The new laboratory measurements provide much improved rest frequencies in the submillimetre
spectral region useful for the identification of SiN lines in hot core sources and
circumstellar shells.
Key words: molecular data / methods: laboratory / techniques: spectroscopic / radio lines: ISM
© ESO, 2006
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