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40949161862
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Given the x-ray wavelength (1.54Å) and diffraction angle (13.9°) reported (22), the Bragg peak (22) should be indexed as (011) of the monoclinic phase. It was assigned as (110) of the monoclinic phase, which in fact becomes (110) of the rutile phase upon transformation.
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Given the x-ray wavelength (1.54Å) and diffraction angle (13.9°) reported (22), the Bragg peak (22) should be indexed as (011) of the monoclinic phase. It was assigned as (110) of the monoclinic phase, which in fact becomes (110) of the rutile phase upon transformation.
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40949160790
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2/(V·s) for metallic vanadium dioxide (20). The diffusion of such electrons into the deeper regions may contribute to generation of shear.
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2/(V·s) for metallic vanadium dioxide (20). The diffusion of such electrons into the deeper regions may contribute to generation of shear.
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37
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40949104990
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Shear motion leads to a change in principal axes (34). Because not all Bragg spots are equally well in phase with the Ewald sphere at the same time (28), shear motion may enhance or suppress the Bragg intensities to values above or below the initial intensity, as observed.
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Shear motion leads to a change in principal axes (34). Because not all Bragg spots are equally well in phase with the Ewald sphere at the same time (28), shear motion may enhance or suppress the Bragg intensities to values above or below the initial intensity, as observed.
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-
-
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38
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40949142978
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3 (21), which contains four vanadium atoms, this energy density gives ∼0.05 photon per vanadium.
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3 (21), which contains four vanadium atoms, this energy density gives ∼0.05 photon per vanadium.
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40
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40949148388
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In order to evaluate the maximum range of the intensity decay, we also considered a convoluted step function instead of a decay process. This distinction becomes significant depending on the physics of the process involved. For a step function, we obtained Δt1, 760 fs. The overall fit of the transient was repeated 1000 times to estimate the error in the Δt1 range, which was found to be ±80 fs. We note that changes in intensity occur in a step of 250 fs. For the ps component, the range Δt1 of 15 ps is evident from the figure
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1 of 15 ps is evident from the figure.
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41
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40949087889
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We are grateful to J. Weissenrieder for helpful discussions, L. H. Tjeng for generously providing some crystals, G. R. Rossman for the crystal-cutting equipment, and L. M. Henling for help with the x-ray measurements. This work was supported by the NSF, by the Air Force Office of Scientific Research, and by the Gordon and Betty Moore Center for Physical Biology at Caltech. P.B. was partially supported by the Alexander von Humboldt Foundation
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We are grateful to J. Weissenrieder for helpful discussions, L. H. Tjeng for generously providing some crystals, G. R. Rossman for the crystal-cutting equipment, and L. M. Henling for help with the x-ray measurements. This work was supported by the NSF, by the Air Force Office of Scientific Research, and by the Gordon and Betty Moore Center for Physical Biology at Caltech. P.B. was partially supported by the Alexander von Humboldt Foundation.
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