Abstract
At first sight measurement of the intensity ratio of antistokes to stokes Raman lines offers a straight forward method for determining the above thermal excitation required by theory. Early measurements /l/, in fact, have confirmed such excitation in the 100 cm-1 region. Clearly much more spectacular enhancement should be expected in the higher frequency region near 1000 cm-1, but, so far, stokes spectra only have been taken /2/. Figure 1 shows our result on the time dependence of the E.coli spectra indicating the appearance, and disapperance, of lines as the activity of the bacteria developes. The neighbourhood of the waterband at 1640 cm-1 provides the possibility for a rough estimate of intensities. At the high dilution required for the maintainance of the activity of the bacteria, an intensity enhancement of the order 105 would be required to find lines of the measured intensity /3/. As a consequence it can be concluded that a number of cells must oscillate coherently, for then the intensity is proportional to the square of the number of oscillating centers. This should explain why, in the time available to us, we were unable to reproduce this result.
In agreement with the authors, this paper was extracted from their notes and supplied with theoretical comments by myself. For personal reasons the authors are unable to continue this research.
H. Frölich
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
Similar content being viewed by others
References
Webb, S.J., Stoneham, M.E. and Fröhlich, H. Phys.Lett. A63, 407, (1977).
Webb, S.J., Phys.Rep. 60, 201, (1980).
Fröhlich, H. in Physics as Natural Philosophy, ed. Shimony, A. and Freshbach, H., MIT Press, Cambridge Masc., p. 286, (1982).
Niissle in-Crystal la, V. and Scheef ers-Borchel, U., Molec.gen. Genet. 169, 35, (1979).
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 1983 Springer-Verlag Berlin Heidelberg
About this paper
Cite this paper
Drissler, F., Santo, L. (1983). Coherent Excitations and Raman Effect. In: Fröhlich, H., Kremer, F. (eds) Coherent Excitations in Biological Systems. Proceedings in Life Sciences. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-69186-7_2
Download citation
DOI: https://doi.org/10.1007/978-3-642-69186-7_2
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-69188-1
Online ISBN: 978-3-642-69186-7
eBook Packages: Springer Book Archive