... T = D T = Gii: Ta cú n1 = N1 = N0( 1- e-t1 ) n2 = N2 = N1( 1- e-t2 ) = N0e-t1 ( 1- e-2t1 ) n1 /n2 =( 1- e-t1 )/e-t1 ( 1- e-2t1 ) =(1-X)/X(1-X2) = 1/X(1+X) Vi X = e-t1 ú ta cú phng trỡnh: X2 + X = n2/n1 ... H0 ( 1- e t1 ) -> N1 = H0 ( 1- e t1 ) H2 = H0 ( 1- e t2 ) -> N2 = H0 ( 1- e t2 ) -> ( 1- e t2 ) = 2,3( 1- e t1 ) > ( 1- e ) = 2,3 ( - e ) t X = e ta cú: (1 X3) = 2,3(1-X) > (1-X)( ... Zmp + (A-Z)mn m -> m = Zmp + (A-Z)mn m Nng lng mt phn ng to E = (2mD mHe mn ) c2 = [2(mP + mn - mD) (2mp + mn - mHe ) - mn]c2 = (mHe - 2mD)c2 = 0,0457uc2 = 42,57MeV = 68,11.1 0-1 3J Khi...