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

K. Graupner | Zendy; T. A. Field | Zendy; Graham C. Saunders | Zendy

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

Author(s) -

K. Graupner,

T. A. Field,

Graham C. Saunders

Publication year - 2008

Publication title -

the astrophysical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.376

H-Index - 489

eISSN - 1538-4357

pISSN - 0004-637X

DOI - 10.1086/592327

Subject(s) - physics , metastability , microsecond , astrochemistry , radiative transfer , ion , electron , carbon fibers , atomic physics , molecule , chemical physics , astrophysics , astronomy , interstellar medium , materials science , nuclear physics , galaxy , quantum mechanics , composite number , composite material

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 A2. 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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