单词	photoionization
释义	photoionization /ˌfəʊtəʊˌʌɪənʌɪˈzeɪʃ(ə)n / (also photoionisation) noun [mass noun] Physics Ionization produced in a medium by the action of electromagnetic radiation.Firstly, there is no charge separation or corresponding Coulomb attraction barrier, because the electron is ejected and hydrated in the bulk directly by photoionization.... Moreover, this spectrum is strikingly similar to the terminal spectrum measured after photoionization of the isolated PYP chromophore in solution. T-rays have low photon energies and will not cause harmful photoionization in biological tissues.
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