Possibility to produce element 120 in the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msup><mml:mrow/><mml:mn>54</mml:mn></mml:msup></mml:math>Cr+<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msup><mml:mrow/><mml:mn>248</mml:mn></mml:msup></mml:math>Cm hot fusion reaction

Synthesis of element 120 in the ${}^{249}$Cf(${}^{50}$Ti,$xn$)${}^{299\ensuremath{-}x}$120 and ${}^{248}$Cm(${}^{54}$Cr,$xn$)${}^{302\ensuremath{-}x}$120 fusion evaporation reactions has been evaluated by means of a modified fusion by diffusion model. It is found that the fusion probability of the system ${}^{54}$Cr+${}^{248}$Cm is two times smaller than that of ${}^{50}$Ti+${}^{249}$Cf. On the other hand, the survival probability of the former is obviously greater than that of the latter. As a result, the loss in the fusion probability of the ${}^{54}$Cr+${}^{248}$Cm reaction is compensated by its gain in survival probability. The calculated maximum evaporation residue cross sections in the ${}^{249}$Cf(${}^{50}$Ti,3$n$)${}^{296}$120 and ${}^{248}$Cm(${}^{54}$Cr,4$n$)${}^{298}$120 reactions are quite close: 0.034 and 0.024 pb, respectively. Besides, as compared to the system ${}^{50}$Ti+${}^{249}$Cf, the ${}^{54}$Cr+${}^{248}$Cm combination has two advantages. First, ${}^{248}$Cm is much easier accumulate a sufficient amount for the target material than ${}^{249}$Cf. Second, the isotope ${}^{298}$120 has 178 neutrons, two neutrons more than the isotope ${}^{296}$120. Therefore, the ${}^{54}$Cr+${}^{248}$Cm combination should be one of most favorable candidates to produce superheavy element 120.

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