Observations of C/2014 Q2 ( Lovejoy ) comet were carried out on 7th February , 2015 , at the observation station in Mayaki village ( No .
583 – Odesa-Mayaki observatory ) .
The integrated-light photometry of the comet was conducted using RC-800 telescope ( D = 80 cm ; F = 214.0 cm ) with FLI MicroLine 9000 CCD camera .
The photometric primary reductions included dark-frame subtraction and flat-field correction .
The photometric study of the comet plasma tails was performed using an interactive program to construct a series of longitudinal and transverse profiles of individual tail rays .
The Shulman diffusion model was applied to interpret the calculated photometric profiles .
The comparison of the experimental profiles and those calculated theoretically from the diffusion model enabled us to estimate the following physical parameters of the comet plasma tail : acceleration a = 176 m/sec ^ { 2 } and lifetime of fluorescent ions \tau = 2.7 \cdot 10 ^ { 3 } sec ; longitudinal and transverse diffusion coefficients , and magnetic flux density B = 97 \pm 5.3 nT .