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Volumn 108, Issue 16, 1998, Pages 6652-6659

Ultrafast studies of the photodissociation of the acetone 3s Rydberg state at 195 nm: Formation and unimolecular dissociation of the acetyl radical

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EID: 11744353385     PISSN: 00219606     EISSN: None     Source Type: Journal    
DOI: 10.1063/1.476080     Document Type: Article
Times cited : (43)

References (42)
  • 26
    • 85034304711 scopus 로고    scopus 로고
    • note
    • 1} surface has an accompanying surface that is not represented.
  • 27
    • 0003450764 scopus 로고    scopus 로고
    • August, National Institute of Standards and Technology, Gaithersburg, MD, 20899
    • W. G. Mallard and P. J. Linstrom, Eds., NIST Standard, Reference Database Number 69, August 1997, National Institute of Standards and Technology, Gaithersburg, MD, 20899 (http://webbook.nist.gov); M. W. Chase, Jr., C. A. Davies, J. R. Downey, Jr., D. J. Frurip, R. A. McDonald, and A. N. Synerud, J. Phys. Chem. Ref. Data 14, Suppl. No. 1 (1985).
    • (1997) NIST Standard, Reference Database Number 69
    • Mallard, W.G.1    Linstrom, P.J.2
  • 30
    • 85034281387 scopus 로고    scopus 로고
    • note
    • avl or 24 kcal/mole based on impulsive energy partitioning in the primary dissociation. This energy partitioning is attributed to North et al. (Ref. 15) but this value was determined for 248 nm excitation to the first excited state rather than at 193 nm for the Rydberg state. The acetyl energy for 193 nm excitation is not as clearly indicated by North et al. These authors also mention that for 248 nm excitation, the average internal energy of the acetyl molecules that dissociate is 24 kcal/ mole, for which they estimate a RRKM dissociation time of 10 ps. Our RRKM calculations indicate that the dissociation time we measure corresponds to 25 kcal/mole and that 1.7 ps is closer to 27 kcal/mole. In their initial acetone 4s Rydberg state study, Kim et al. (Ref. 16) used an impulsive energy partitioning for determining the acetyl energy to use for their RRKM calculation, but then subsequently investigated acetyl produced by several precursor ketones to investigate to what extent the partitioning appears to be impulsive or statistical (Ref. 24).
  • 38
    • 85034310437 scopus 로고    scopus 로고
    • note
    • 3 velocity distribution. This subsequent treatment is based on their results using the CO translational energy distribution for the secondary methyl and the (unresolved) methyl ttanslational energy distributions.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.