amass1=  132.899994
 amass2=  22.9899998
 amass3=  138.899994
 amass4=  126.900002
 amass5=  1.
 ielement1= 55
 ielement2= 11
 ielement3= 57
 ielement4= 53
 ielement5= 1
 n1=3
 n2=3
 n3=3
 a=11.0
 theta=10.0