Download e-book for kindle: Advances in Chemical Physics (Wiley Series in Probability by Joshua Jortner, Raphael D. Levine, Stuart Alan Rice

By Joshua Jortner, Raphael D. Levine, Stuart Alan Rice

ISBN-10: 047106274X

ISBN-13: 9780471062745

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Extra info for Advances in Chemical Physics (Wiley Series in Probability and Mathematical Statistics)

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By measuring the laser power dependence of the reaction rate information can be obtained on both the vibrational energy requirements and the steady-state value of the reaction rates. Acknowledgment This research was supported by a grant from the United States-Israel Binational Science Foundation (BSF), Jerusalem, Israel. References 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. H. V. Hartel and M. Polanyi, 2. Phys. Chem, B11, 97 (1930). M. Polanyi, Atomic Reactions, Williams and Northgate, London, 1932.

It is attempted to keep the initial conditions (concentration and spatial distribution of excited donor molecules) constant as well. Difficulties arise when donor and acceptor absorption spectra overlap: inner filter effects decrease initial excited donor concentration, resulting in lower emission intensity. The same problem is encountered in the determination of self-quenching rate constants, which must be known for correct analysis. Taking NO as an example, it was found necessary to use ternary mixtures2’ to extract self-quenching rate constant.

5 X 10 - lo cm3 s - molecule bReference numbers in brackets. 1 -4 - [361 (361 821 35 APPLICATION TO NITRIC OXIDE FLUORESCENCE QUENCHING 31 surprising. 1 X lo-'* cm3 s-' molecule-', being only slightly bigger than gas kinetic. It is found that collision-induced D-tA transfer is very effective,22leading to strong A-state emission after D-state excitation. Since A-state lifetime is much longer than that of the D-state, steady-state intensity measurements may introduce an error in calculating ksQ. In view of the rather indirect method used in Ref.

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Advances in Chemical Physics (Wiley Series in Probability and Mathematical Statistics) by Joshua Jortner, Raphael D. Levine, Stuart Alan Rice


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