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MO: Molekülphysik

MO 7: Poster: Cluster, Stoßprozesse

MO 7.28: Poster

Dienstag, 17. März 1998, 16:00–18:00, PF

Reaction Dynamics of Sr(3PJ)+RISrI*+R(R=CH3,C2H5): Rotational Alignment, Electronic State Branching Ratio and Vibrational State Population of SrI* — •Victor Wei-Keh WU1, Ming-Liang WANG2, Ji-Ping ZHAN2, Ke-Li HAN2, Guo-Zhong HE2, and Nan-Quan LOU21Victor Basic Research Laboratory e. V., Bielefeld, FRG. Telefax:0049-(0)521-160395, http://www.uni-bielefeld.de/ fkure — 2SKLMRD, Dalian Institute of Chemical Physics, CAS. Dalian, 116023 P.R.China

Sr(3PJ) + RI → SrI (A2P1/2,3/2, B2Σ+) + R (R = CH3,C2H5) reactions have been studied by measuring their chemiluminescences under beam-gas conditions. The relative Erel was approx. 0.077 eV, at which the rotational alignments Robs of SrI* of B state were obtained as 0.26 ± 0.02 and 0.11 ± 0.02; the calculated <P2(j·k)> are -0.48 ± 0.02 and -0.19 ± 0.02 for R = CH3 and C2H5 respectively. Because of the pool resolution for the data of A state, the following values for A state are only for eventual reference: the experimental values are -0.18 ± 0.02 and -0.10 ± 0.02, the calculated <P2(j·k)> are -0.23 ± 0.02 and -0.12 ± 0.02 for R = CH3 and C2H5 respectively. The electronic state branching ratios and product vibrational state populations have been also estimated by simulating the chemilumescences of SrI(A, B). *Wu acknowledges the sponsorships of VBR(75%), DFG., and SKLMRD. Ref. Chem. Phys. Lett., in press (1997)

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