Infrared emission accompanying the gas phase recombination of alkyl radicalsElectronic supplementary information (ESI) available: Appendix: Model for emission from the C2H6 recombination product of CH3 radicals. See http://www.rsc.org/suppdata/cp/b3/b303780k/

2003 ◽  
Vol 5 (14) ◽  
pp. 2981 ◽  
Author(s):  
Gus Hancock ◽  
Vanessa Haverd ◽  
Marc Morrison
Keyword(s):  
Gas Phase ◽  
Infrared Emission ◽  
Supplementary Information ◽  
Recombination Product

Far-Infrared Emission Spectra of Selected Gas-Phase PAHs: Spectroscopic Fingerprints

Science ◽  
1996 ◽  
Vol 274 (5287) ◽  
pp. 582-583 ◽  
Author(s):  
K. Zhang ◽  
B. Guo ◽  
P. Colarusso ◽  
P. F. Bernath
Keyword(s):  
Gas Phase ◽  
Emission Spectra ◽  
Far Infrared ◽  
Infrared Emission

scholarly journals Effects of Dust Formation on Chemical Abundances

1983 ◽  
Vol 103 ◽  
pp. 259-264 ◽  
Author(s):  
G. A. Shields
Keyword(s):  
Gas Phase ◽  
Planetary Nebula ◽  
Planetary Nebulae ◽  
Infrared Emission ◽  
Chemical Abundances ◽  
Line Intensities ◽  
Refractory Elements ◽  
Grain Formation ◽  
Residual Gas ◽  
Inner Parts

Gas-phase abundances of C, Mg, Si, Ca, and Fe have been measured for a number of planetary nebulae on the basis of optical, ultraviolet, and infrared emission-line intensities. The abundances of Si, Ca, and Fe show characteristic depletions of one to two orders-of-magnitude as a result of grain formation. Magnesium shows a similar depletion in the outer parts of several planetary nebulae, but it is undepleted in their inner parts. Carbon is not detectably depleted by grain formation. Efficient condensation of refractory elements can easily occur during the early stages of formation of a planetary nebula; but the observed, residual gas-phase abundances are not understood. Observations of molecules in the envelopes of late-type stars may provide useful clues.

scholarly journals Detection of the Buckminsterfullerene Cation (C60+) in Space

2013 ◽  
Vol 9 (S297) ◽  
pp. 203-207 ◽  
Author(s):  
O. Berné ◽  
G. Mulas ◽  
C. Joblin
Keyword(s):  
Interstellar Medium ◽  
Gas Phase ◽  
Laboratory Data ◽  
Infrared Emission ◽  
Diffuse Interstellar Bands ◽  
Proposal A ◽  
Significant Step ◽  
Chemistry Calculation ◽  
Vibrational Bands ◽  
Phase Data

AbstractIn the early 90's, C60+ was proposed as the carrier of two diffuse interstellar bands (DIBs) at 9577 and 9632 Å, but a firm identification still awaits gas-phase spectroscopic data. Neutral C60, on the other hand, was recently detected through its infrared emission bands in the interstellar medium and evolved stars. In this contribution, we present the detection of C60+ through its infrared vibrational bands in the NGC 7023 nebula, based on spectroscopic observations with the Spitzer space telescope, quantum chemistry calculation, and laboratory data from the literature. This detection supports the idea that C60+ could be a DIB carrier, and provides robust evidence that fullerenes exist in the gas-phase in the interstellar medium. Modeling efforts to design specific observations, combined with new gas-phase data, will be essential to confirm this proposal. A definitive attribution of the 9577 and 9632 Å DIBs to C60+ would represent a significant step forward in the field.

Gas-phase infrared emission spectra of C60 and C70. Temperature-dependent studies

1994 ◽  
Vol 218 (4) ◽  
pp. 295-303 ◽  
Author(s):  
Laszlo Nemes ◽  
Ram S. Ram ◽  
Peter F. Bernath ◽  
Frank A. Tinker ◽  
Michael C. Zumwalt ◽  
...  
Keyword(s):  
Gas Phase ◽  
Emission Spectra ◽  
Infrared Emission ◽  
Temperature Dependent
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