Radiogenic Lead with Dominant Content of ²⁰⁸Pb: New Coolant and Neutron Moderator for Innovative Nuclear Facilities

Table 1

Neutron-physical characteristics of some materials.

Nuclide	𝜎elastic	Number of collisions	𝜎^𝑡ℎ(𝑛,𝛾)	𝑅𝐼𝑛,𝛾 + 1/V
	(barn)	(0.1 MeV → 0.5 eV)	(mbarn)	(mbarn)
^1H	30.1	12	332	149
^2D	4.2	17	0.55	0.25
^9Be	6.5	59	8.5	3.8
^12C	4.9	77	3.9	1.8
^16O	4.0	102	0.19	0.16
Pbnat	11.3	1269	174	95
^208Pb	11.5	1274	0.23	0.78