The Cherry collection of Deg Hit'an (Ingalik) material culture / James W. VanStone.

n.s. no.27(1996)

Reproduction of painted portrait of Marcus Elias Marcus, age 76. Portraits Men

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Reproduction of painted portrait of Marcus Elias Marcus, age 76 Portraits Men

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Handwritten dedication on verso of reproduction of painted portrait of Marcus Elias Marcus.

See F 83565, Reproduction of painted portrait of Marcus Elias Marcus, age 76

Window display; Joseph? Marcus storefront; Gilgenburg Business Establishments

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Reproduction of painted portrait of Marcus Elias Marcus, age 76. Portraits Men

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Reproduction of painted portrait of Marcus Elias Marcus, age 76 Portraits Men

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Liebeskind, Leo and Hertha nee Marcus Portraits; Couples

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Liebeskind, Leo and Hertha nee Marcus Portraits; Couples

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left to right:johanna heilbrunnl marcus heilbrunn, karl heilbrunn; osterade / harz Portraits Family

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heilbrunn marcus; heibrunn johanna Portraits Couples

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goldschmidt marcus Cemeteries; Tombs

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Electron transfer reaction in the marcus inverted region: role of high frequency vibrational modes

A theoretical study of the dynamics of photo-electron transfer reactions in the Marcus inverted regime is presented. This study is motivated partly by the recent proposal of Barbara et al. (J. Phys. Chem. 96, 3728, 1991) that a minimal model of an electron transfer reaction should consist of a polar solvent mode (X), a low frequency vibrational mode (Q) and one high frequency mode (q). Interplay between these modes may be responsible for the crossover observed in the dynamics from a solvent controlled to a vibrational controlled electron transfer. The following results have been obtained. (i) In the case of slowly relaxing solvents, the proximity of the point of excitation to an effective sink on the excited surface is critical in determining the decay of the reactant population. This is because the Franck-Condon overlap between the reactant ground and the product excited states decreases rapidly with increase in the quantum number of the product vibrational state. (ii) Non-exponential solvation dynamics has an important effect in determining the rates of electron transfer. Especially, a biphasic solvation and a large coupling between the reactant and the product states both may be needed to explain the experimental results. ©1996 American Institute of Physics

Non-Marcus energy gap dependence of electron transfer rate in contact ion pairs. Novel interplay between relaxation and reaction in solution

Electron transfer reactions between donor-acceptor pairs in solution and in organized media exhibit diverse behaviour. Recent experiments have indicated an interesting breakdown of the Marcus parabolic energy gap dependence in the normal regime for back electron transfer from contact ion pairs. A novel explanation of this breakdown has recently been proposed (M. Tachiya and S. Murata, J. Am. Chem. Sec., 116(1994) 2434) which attributes the breakdown to the interplay between the relaxation in the reactant well and the reaction. A particularly interesting aspect of the model is that it envisages the electron transfer in the normal regime to take place from a completely non-equilibrium condition. In this article a time dependent solution of the model is presented for the first time, after generalizing it to include a realistic initial population distribution. The decay of the contact ion pair population is completely non-exponential. This can be used to check the validity of the Tachiya-Murata model. The dynamics of electron transfer from the solvent separated ion pair, which seem to obey the Marcus relation, is exponential.