Hello Mr… I used OpenMC to design SFR but when I tried the program it couldn’t be in the element section of Mo. please help me…
Hi @Rahma. It looks like it’s running into a problem when trying to expand the natural element – when it does this, it looks to see what cross sections are available in the cross_sections.xml file. Are you setting your OPENMC_CROSS_SECTIONS environment variable and if so, what are you setting it to?