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Konstanz 1998 – scientific programme

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MO: Molekülphysik

MO 7: Poster: Cluster, Stoßprozesse

MO 7.29: Poster

Tuesday, March 17, 1998, 16:00–18:00, PF

Rotational Alignments of Products CaCl/SrCl(A2Π, B2Σ+) from Ca/Sr+NOCl — •Victor Wei-Keh WU1, Guo-Zhong HE2, and Ke-Li HAN21Victor Basic Research Laboratory,Bielefeld,FRG.(http://www.uni-bielefeld.de/ fkure) — 2SKLMRD, Dalian Institute of Chemical Physics, CAS., 116023 Dalian, P.R.China

As the PESs as well as Sato parameters, Sab, Sbc, Sac = 0.31, 0.2, -0.9 / 0.125, 0.2, 0.05 for SrCl(A)/SrCl(B) and 0.01, 0.67, -0.93 / 0.21, 0.01, -0.9 for CaCl(A)/CaCl(B) respectively, have been deduced from the exp. electronic state branching ratio and vib. state population of products at Erel = 0.0867 eV, the trends of reaction dynamics of both reactions running over different electronic surfaces, especially the alignments of products within 0.01≤Erel≤3.0 eV have been investigated. The higher the Erel is, the higher energy surface the reactants climbing on, and the heavier the atomic mass (Sr>Ca) is, the smaller the values P2 of alignments are deviated from the asymptotic value -0.5. P2 of SrCl(A)/SrCl(B) are located at -0.4788/-0.1645 and -0.4763/-0.2403, of which absolute value is decreased, if Erel is reduced; CaCl(A)/CaCl(B) at -0.2941/-0.3080 and -0.3443/-0.2409 at Erel = 3.0/0.01 eV respectively, where P2 of CaCl(A)/CaCl(B) can rather be averaged to -0.2219/-0.3532, and independent upon Erel within the investigated range. *Wu acknowledges the financial supports by VBR (75%), DFG.(No. Wu 250/1-1) and SKLMRD. Ref. 1. Chem. Comm. (To be submitted).

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