[en] Systematic investigations on the radiolysis of liquid systems using 30 MeV alpha beam from cyclotron at the Variable Energy Cyclotron Centre (VECC) have been initiated. A liquid target assembly incorporating current measurement devices in solution as well as on the target assembly window has been designed. Suitable aluminium absorbers of different thickness have been used to extract different energies of alpha ranging from 24.82 MeV to 6.41 MeV corresponding to the LET range of 2.77 eV/A₀ to 7.98 eV/A₀. A fricke solution using 10 mM Fe₂⁺ in 0.8 NH²SO⁴ in presence of 5mM NaCl under continuous oxygen bubbling has been radiolysed with radiation of different LET. The effect of LET on the G(Fe₃⁺) has been investigated and the results are discussed. (author)