+\def\Kernradius{7.5pt}
+\def\KernabstandHe{7.5pt}
+\def\KernabstandA{7.5pt}
+\def\KernabstandB{7.7pt}
+\def\KernabstandCB{11.8pt}
+\def\KernabstandCD{12.3pt}
+\def\KernabstandC{12.5pt}
+\def\KernabstandD{13.0pt}
+\def\KernabstandKr{15.0pt}
+\def\KernabstandE{20.5pt}
+\def\KernabstandBaE{19.8pt}
+\def\KernabstandEA{20.0pt}
+\def\KernabstandF{24.0pt}
+\def\KernabstandG{23.4pt}
+\def\ColorProton{red}
+\def\ColorNeutron{gray!20}
+
+\newpsstyle{proton}{linecolor={[rgb]{0.72 0 0}},slopebegin=red!50,sloperadius=0.15,linewidth=0.1pt,slopecenter=0.65 0.6,linestyle=solid}
+\newpsstyle{neutron}{linecolor=gray!50,slopebegin=white,sloperadius=0.11,linewidth=0.1pt,slopecenter=0.65 0.6,linestyle=solid}
+
+\def\Proton{\psBall[style=proton](0,0){\ColorProton}{\Kernradius}}
+\def\Neutron{\psBall[style=neutron](0,0){\ColorNeutron}{\Kernradius}}
+
+\def\AtomKernHe{%
+\multido{\iAngle=40+180}{2}{%
+\rput(\KernabstandHe;\iAngle){\Proton}%
+}%
+\multido{\iAngle=130+180}{2}{%
+\rput(\KernabstandHe;\iAngle){\Neutron}%
+}%
+}%
+\def\AtomKernKr{%
+%------------ 0. Ebene ------------------
+\rput(\KernabstandKr;40){\Neutron}%
+\rput(\KernabstandKr;-30){\Neutron}%
+\rput(\KernabstandKr;10){\Proton}%
+\rput(\KernabstandKr;-90){\Proton}%
+\rput(\KernabstandKr;70){\Proton}%
+\rput(\KernabstandKr;130){\Neutron}%
+\rput(\KernabstandKr;100){\Proton}%
+\rput(\KernabstandKr;160){\Proton}%
+\rput(\KernabstandKr;205){\Neutron}%
+\rput(\KernabstandKr;240){\Neutron}%
+\rput(\KernabstandKr;-60){\Neutron}%
+%\rput(\KernabstandKr;135){\Neutron}%
+%------------ 1. Ebene ------------------
+\rput(\KernabstandCD;0){\Neutron}%
+\rput(\KernabstandCD;70){\Neutron}%
+\rput(\KernabstandCD;305){\Proton}%
+\rput(\KernabstandCD;260){\Neutron}%
+\rput(\KernabstandCB;195){\Neutron}%
+\rput(\KernabstandCB;135){\Neutron}%
+%------------ 2. Ebene ------------------
+%\rput(\KernabstandCD;282){\Neutron}%
+\rput(\KernabstandCD;225){\Proton}%
+\rput(\KernabstandCB;25){\Neutron}%
+\rput(\KernabstandCB;104){\Neutron}%
+\rput(\KernabstandCB;165){\Neutron}%
+\rput(\KernabstandCB;-35){\Proton}%
+\rput(\KernabstandCB;60){\Proton}%
+\rput(0;0){\Neutron}%
+}%
+
+\def\AtomKernRn{%
+%---------- 0. Ebene -------------------
+\rput(\KernabstandG;108){\Proton}%
+\rput(\KernabstandG;144){\Neutron}%
+\rput(\KernabstandG;180){\Proton}%
+\rput(\KernabstandG;216){\Neutron}%
+\rput(\KernabstandG;252){\Neutron}%
+\rput(\KernabstandG;288){\Proton}%
+\rput(\KernabstandG;324){\Neutron}%
+\rput(\KernabstandG;0){\Proton}%
+\rput(\KernabstandG;36){\Proton}%
+\rput(\KernabstandG;72){\Neutron}%
+%---------- 1. Ebene -------------------
+\rput(\KernabstandF;90){\Neutron}%
+\rput(\KernabstandF;126){\Neutron}%
+\rput(\KernabstandF;162){\Neutron}%
+\rput(\KernabstandF;198){\Proton}%
+\rput(\KernabstandF;234){\Proton}%
+\rput(\KernabstandF;270){\Proton}%
+\rput(\KernabstandF;306){\Neutron}%
+\rput(\KernabstandF;342){\Neutron}%
+\rput(\KernabstandF;18){\Neutron}%
+\rput(\KernabstandF;54){\Neutron}%
+%------------ 2. Ebene ------------------
+\rput(\KernabstandE;73){\Proton}%
+\rput(\KernabstandE;145){\Proton}%
+\rput(\KernabstandE;107){\Neutron}%
+\rput(\KernabstandE;180){\Neutron}%
+\rput(\KernabstandE;215){\Neutron}%
+\rput(\KernabstandE;290){\Neutron}%
+\rput(\KernabstandE;253){\Neutron}%
+\rput(\KernabstandE;36){\Neutron}%
+\rput(\KernabstandE;1){\Neutron}%
+\rput(\KernabstandE;325){\Proton}%
+%------------ 3. Ebene ------------------
+\rput(\KernabstandC;36){\Proton}%
+\rput(\KernabstandD;225){\Proton}%
+\rput(\KernabstandC;282){\Neutron}%
+\rput(\KernabstandC;327){\Neutron}%
+\rput(\KernabstandC;171){\Neutron}%
+\rput(\KernabstandC;104){\Neutron}%
+\rput(0;0){\Proton}%
+}%
+
+