Advanced Method for Calculations of Core Burn-Up, Activation of Structural Materials, and Spallation Products Accumulation in Accelerator-Driven Systems

Table 2

Calculated nuclide inventories for 𝑡=90 days and relative differences ((𝑦^calc_𝑖−𝑦^anal_𝑖)/𝑦^anal_𝑖) from analytical solution.

Nuclide	Analytical solution	ORIGEN-2.2		RADAU5, Tol=10^−4		RADAU5, Tol=10^−10
	at/(b·cm)	at/(b·cm)	diff, %	at/(b·cm)	diff, %	at/(b·cm)	diff, %
^209Bi	1.65341𝑒-2	1.65341𝑒-2	−7.68𝑒-5	1.65341𝑒-2	0.0	1.65341𝑒-2	0.0
^210Bi	2.15920𝑒-7	2.16954𝑒-7	4.79𝑒-1	2.15847𝑒-7	−3.38𝑒-2	2.15920𝑒-7	−4.63𝑒-11
^210Po	2.02059𝑒-6	1.99902𝑒-6	1.07	2.02067𝑒-6	3.75𝑒-3	2.02059𝑒-6	0.0
^206Pb	4.50804𝑒-7	4.74951𝑒-7	5.36	4.50801𝑒-7	−5.75𝑒-4	4.50804𝑒-7	−3.55𝑒-10