Electron beam irradiation induced changes in liquid-crystal compound 5CB

• Autorzy: Rath M. C. , Sarkar S. K. , Wadhawan V. K. , Verma R. , Das I. M. L. , Dąbrowski R. , Tykarska M. , Dhar R.
• Konferencja: Conference on Liquid Crystals : Chemistry, Physics and Applications ; (17 ; 09.2007 ; Augustów, Poland)
• Języki publikacji: EN

Abstrakty

EN

Electron beam irradiation studies on liquid crystal material 5CB have been carried out at a temperature where the compound exists in the isotropic liquid phase. In situ time-resolved spectroscopic characterization was carried out during the irradiation. Three different transients were observed during the 2-μs electron pulse. After about 50 μs, only one transient species was found to be present, which has an absorption peak at 360 nm. Radiolysed sample exhibits a broad absorption at ∼ 400 nm. The dielectric measurements show that even a low level of irradiation results in a dramatic increase in the component of dielectric permittivity normal to the long axes of the molecules ε ⊥', and a corresponding decrease in the dielectric anisotropy (Δ ε'=ε II — ε ⊥'). These studies show that 5CB is prone to substantial radiation damage on exposure to the beam of high-energy electrons.

Słowa kluczowe

EN

liquid crystal compound 5CB; electron beam irradiation; linear electron accelerator; transient radiolytic products

• Wydawca: Stowarzyszenie Elektryków Polskich ; Polska Akademia Nauk ; Wojskowa Akademia Techniczna im. Jarosława Dąbrowskiego
• Czasopismo: Opto-Electronics Review
• Rocznik: 2008
• Tom: Vol. 16, No. 4
• Strony: 399--403
• Opis fizyczny: Bibliogr. 16 poz., wykr.

Twórcy

autor

Rath M. C.

autor

Sarkar S. K.

autor

Wadhawan V. K.

autor

Verma R.

autor

Das I. M. L.

autor

Dąbrowski R.

autor

Tykarska M.

autor

Dhar R.

• Bhabha Atomic Research Centre, Radiation & Photochemistry Division, Trombay, Mumbai, India

Bibliografia

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