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//chapter10,Example10_7,pg 273
n=1.2*10^7
mp=1.67*10^-27
qp=1.6*10^-19
Bp=(2*%pi*mp*n)/qp
R=0.5
Ep=((Bp^2)*(qp^2)*(R^2))/(2*mp)
Ep=Ep/qp
malp=6.68*10^-27
qalp=2*1.6*10^-19
Balp=(2*%pi*malp*n)/qalp
Ealp=((Balp^2)*(qalp^2)*(R^2))/(2*malp)
Ealp=Ealp/qp
printf("flux density for proton\n")
printf("Bp=%.2f Wb/m2",Bp)
printf("\nflux density for alpha particle\n")
printf("Balp=%.2f Wb/m2",Balp)
printf("\nenergy of proton\n")
printf("Ep=%.2f ev",Ep)
printf("\nenergy of alpha particle\n")
printf("Ealp=%.2f ev",Ealp)
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