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Long-lived parent negative ions in p-benzoquinone formed by electron capture in the field of the ground and excited states

✍ Scribed by L.G. Christophorou; J.G. Carter; A.A. Christodoulides

Publisher: Elsevier Science
Year: 1969
Tongue: English
Weight: 386 KB
Volume: 3
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(69)80037-0

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✦ Synopsis

Two separate processes

for nondissociative electron attachment to p-benzoquinone have been observed: the first peaks at thermal energies and the second which is much stronger, peaks at 2.1 eV. The second process has a pe,"k cross section cf 6.7 X 10 -I? cm2 and is attributed to electron capture in the field of the lowest n 4-n transition. The unstable parent negative ion at 2.1 eV has a mean autoionization lifetime of u 30 pet.

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