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To clarify extinction mechanism of a dye-doped (polymer/liquid crystal) composite film variable optical attenuator, we evaluated its scattering intensity dependencies on the wavelength and scattering angle. We have obtained some experimental data that suggest Rayleigh scattering is a primary mechanism of extinction.
Cell destruction in boron neutron capture therapy is effected by nuclear reaction between 10 B and thermal neutrons with the release of alpha-particles ( 4 He) and lithium-7 ions ( 7 Li). 4 He kills cells within 10<space>μm of the site of 4 He generation, therefore it is theoretically possible to destroy tumour cells without affecting adjacent healthy...
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