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Formation of radical cations and dose response of alpha-terthiophene-cellulose triacetate films irradiated by electrons and gamma rays (Articolo in rivista)
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- Label
- Formation of radical cations and dose response of alpha-terthiophene-cellulose triacetate films irradiated by electrons and gamma rays (Articolo in rivista) (literal)
- Anno
- 2002-01-01T00:00:00+01:00 (literal)
- Alternative label
Emmi S.S., Takacs E., Ceroni P., D'Angelantonio M., Lavalle M., Fuochi P.G., Kovacs A. (2002)
Formation of radical cations and dose response of alpha-terthiophene-cellulose triacetate films irradiated by electrons and gamma rays
in Radiation physics and chemistry (1993)
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- Emmi S.S., Takacs E., Ceroni P., D'Angelantonio M., Lavalle M., Fuochi P.G., Kovacs A. (literal)
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- ISI Web of Science (WOS) (literal)
- Titolo
- Formation of radical cations and dose response of alpha-terthiophene-cellulose triacetate films irradiated by electrons and gamma rays (literal)
- Abstract
- The radiation-induced UV-VIS spectrum of alpha-terthiophene radical cation
in solid is reported. The radical cation initiates an oligomerization in
the CTA matrix producing permanently coloured conjugated polarons. The
specific net absorbance at 465 nm is linearly related with dose up to 2 x
10^6 Gy, for electrons and gamma irradiation. The decrease of the UV
typical absorption (355 nm) and of four IR bands of alpha-terthiophene is
linear with dose, as well. Although sensitivity is influenced by dose
rate, it turned out that a linear relationship holds between sensitivity
and log(dose rate), in the range from 2 to 10^5 Gy/min. These findings
suggest a potential application of the system for dosimetric purposes over
a wide range of dose and dose rate (literal)
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