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キーワード:
-
MPINP:
Quantendynamik - Abteilung Blaum
要旨:
We studied the reaction of doubly charged carbon C2+ (C iii) with
molecular hydrogen, a possible source of the high, unexplained
abundances of interstellar CH+. The experiment was carried out using the
cryogenic linear 22-pole radio frequency ion trap. The measured reaction
rate coefficient amounts to (1.5 0.2) x 10(-10) cm(3) s(-1), nearly
independently of the covered temperature range from 15 to 300 K. In the
product distribution study, the C+ ion was identified as the dominant
product of the reaction. For the CH+ production, we determine an upper
limit for the reaction rate coefficient at 2 x 10(-12) cm(3) s(-1).
