ar cross section double distributions

<BR>= 2 excitation cross section for fixed angle

<BR>= 3 excitation total cross section. Also: ic=0: <SPAN style="font-family:monospace">ia</SPAN>=0 is total reaction cross section;
<SPAN style="font-family:monospace">ia</SPAN>=1 is total fusion cross section; 1<SPAN CLASS="MATH"><IMG
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