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Caption : infrared spectra as a function of irradiation wavelength in the spectral range of the ph vibrational bands.

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Caption : infrared spectra upon heating after irradiation at 10 k with 445 nm: 10 - 90 k.

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Caption : infrared spectra upon heating after irradiation at 10 k with 445 nm: up to 140 k

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Caption : infrared spectra upon heating after irradiation at 10 k with 445 nm: up to 190 k.

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Caption : infrared spectra upon heating after irradiation at 10 k with 445 nm: up to 240 k.

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Caption : infrared spectra upon heating after irradiation at 10 k with 445 nm: up to 280 k.

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Caption : infrared spectra upon heating after irradiation at 10 k with 635 nm: 10 – 130 k.

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Caption : infrared spectra upon heating after irradiation at 10 k with 635 nm: 130 – 260 k.

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Caption : infrared spectra as a function of irradiation fluence at 10 k with 445 nm. beyond about 200 mj/cm<sup>2</sup> the signature of free no in kbr at 2220 cm<sup>-1</sup> becomes visible.