<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>N</mml:mi></mml:math>and<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>Z</mml:mi></mml:math>odd-even staggering in Kr+Sn collisions at Fermi energies

The odd-even staggering of the yield of final reaction products has been studied as a function of proton ($Z$) and neutron $(N)$ numbers for the collisions ${}^{84}\mathrm{Kr}+{}^{112}\mathrm{Sn}$ and ${}^{84}\mathrm{Kr}+{}^{124}\mathrm{Sn}$ at 35 MeV/nucleon in a wide range of elements (up to $Z\ensuremath{\approx}20$). The experimental data show that staggering effects rapidly decrease with increasing size of the fragments. Moreover the staggering in $N$ is definitely larger than the one in $Z$. Similar general features are qualitatively reproduced by the gemini code. Concerning the comparison of the two systems, the staggering in $N$ is in general rather similar, being slightly larger only for the lightest fragments produced in the $n$-rich system. In contrast the staggering in $Z$, although smaller than that in $N$, is sizably larger for the $n$-poor system with respect to the $n$-rich one.

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