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VOLUME 36 (1982) | ISSUE 7 | PAGE 256
Critical point of isostructural phase transition in photomodified anthracene
An isostructural phase transition (IPT) is observed under certain temperatures and UV radiation intensities in a photomodified anthracene (dianthracene) crystal. The IPT curve, which ends at the critical point, and the coordinates of this point (Tc = 620 ± 20 K, Ic = 7019 5 ±0 3 photons/cm2.s) are calculated from the experimental data.