| Acronym | Meaning |
 | GIRMS | Gas Isotope Ratio Mass Spectrometry |
 | EAF | Electric Arc Furnace |
 | STAT | Slotted Tube Atom Trap |
 | IAS | In-situ Air Sparging |
 | IMOM | Iterative Method Of Maximum Overlap |
 | OSRSCF | Open-shell Restricted SCF |
 | CCBA | Coupled-channel Born Approximation |
 | EGCR | Experimental Gas-cooled Reactor |
 | ICDD | International Center For Diffraction Data |
 | IPNSO | Independent-pair Natural Spin Orbital |