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  • 95.30.Ky  (1)
  • Glioma  (1)
  • 1
    Electronic Resource
    Electronic Resource
    The spectral dependence of the optical properties of human brain (1989)
    Springer
    Lasers in medical science 4 (1989), S. 221-227 
    Details
    ISSN: 1435-604X
    Keywords: Optical properties ; Photodynamic therapy ; Glioma ; Brain tumour
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine , Physics , Technology
    Notes: Abstract The in vitro optical properties of slices of human brain tissue were measured. The experiments were performed with an integrating sphere and covered the wavelength range from 400 to 1100 nm. Both normal brain tissue (white and grey matter) and tumour tissue (a malignant glioma and a melanotic melanoma) were investigated. From the experimental data the Kubelka-Munk absorption and scattering coefficients were determined. From these data we calculated the transport absorption and scattering coefficients by using the diffusion approximation. Blood and water appeared to be the dominant chromophores. In the wavelength range mentioned, the absorption coefficients varied over more than two orders of magnitude. The scattering coefficients increased slowly towards the shorter wavelengths.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02032451
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Narrow-band extreme-ultraviolet laser radiation tunable in the range 90.5–95 nm (1993)
    Springer
    Applied physics 57 (1993), S. 411-416 
    Details
    ISSN: 1432-0649
    Keywords: 42.65.Ky ; 33.20.Ni ; 95.30.Ky
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Tunable, narrowband extreme ultraviolet radiation in the range 90.5–95 nm with only limited intensity variations is produced by frequency-tripling ultraviolet light from a frequency-doubled dye laser in a gas-jet of xenon. Acetylene gas is found to be an efficient medium for third-harmonic generation in this wavelength range as well. The extreme-ultraviolet radiation is applied in a spectroscopic study of the b 1 II u , v=6−8 and v=10−12, o 1 II u , v=0 and b′1Σ u + , v=9 states of molecular nitrogen. From linewidth measurements a value k p=6×1010 s−1 for the predissociation rate of the b 1 II u , v=11 state is deduced.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00357384
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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