Experimental Evidence for Radiative Attachment in Astrochemistry from Electron Attachment to NCCCCN

Details Experimental Evidence for Radiative Attachment in Astrochemistry from Electron Attachment to NCCCCN Experimental Evidence for Radiative Attachment in Astrochemistry from Electron Attachment to NCCCCN

Sep 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008apj...685l..95g&link_type=abstract

The Astrophysical Journal, Volume 685, Issue 1, pp. L95-L98.

Astronomy and Astrophysics

Astronomy

1

Astrochemistry, Ism: Molecules, Molecular Processes

Scientific paper

Electron attachment to NCCCCN, dicyanoacetylene (2-butynedinitrile), has been observed. Metastable parent anions, NCCCCN-*, with microsecond or longer lifetimes are formed close to 0 eV electron energy with a cross section of >=0.25 Å2. The stability of NCCCCN-* suggests that radiative attachment to NCCCCN and similar linear carbon chain molecules may be an important mechanism for the formation of negatively charged molecular ions in astrophysical environments. CCCN- and CN- fragment anions are formed at ~3 and ~6 eV.

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