reset
#set terminal svg enhanced size 1000 1000 fname "Times" fsize 36
#set terminal emf color solid enhanced size 750,1000 font "Arial,12" linewidth 3
#set output 'bessel_gauss.svg'
#set output 'bessel_gauss.emf'
set terminal pdf color solid enhanced size 7.5cm,10cm font "Arial,14" linewidth 3
set output 'bessel_gauss.pdf'
set style line 10 lt 3 lc rgb "black" lw 1.5;
set style line 11 lt 1 lc rgb "gray80" lw 0.7;
set style line 12 lt 1 lc rgb "gray80" lw 0.4;
set style line 21 lt 3 lc rgbcolor "dark-red" lw 1;
set style line 22 lt 3 lc rgbcolor "dark-blue" lw 1;
set style line 23 lt 3 lc rgbcolor "dark-green" lw 1;
set style line 24 lt 3 lc rgbcolor "dark-magenta" lw 1;
set linetype 1 lt 1 lc rgbcolor "red" lw 3;
set linetype 2 lt 1 lc rgbcolor "blue" lw 3;
set linetype 3 lt 1 lc rgbcolor "web-green" lw 3;
set linetype 4 lt 1 lc rgbcolor "dark-magenta" lw 3;
set linetype 5 lt 1 lc rgbcolor "orange" lw 3;
set linetype 6 lt 1 lc rgbcolor "steelblue" lw 3;
set border lw 2;
set grid xtics ytics ls 11, ls 12;
set grid mxtics mytics ls 11, ls 12;
set multiplot layout 2,1
set xlabel 'radial coordinate r'
set ylabel 'intensity [A.U.]'
plot [0:10] exp(-2*x**2/(1.75**2)) title 'Gauß', besj0(x)**2 title 'Bessel'  
set xlabel 'radial coordinate r'
set ylabel 'intensity [A.U.]'
plot [0:20] exp(-2*x**2/(2.8793**2)) title 'Gauß', besj0(x)**2 title 'Bessel'  

unset multiplot
set output 
set terminal win
replot