| Acronym | Meaning |
| IEC | Ion-exchange Chromatography |
| C4S | Chemical Shift-specific Slice Section |
| ERPA | Extended Random Phase Approximation |
| MBT | Many-body Theory |
| SPIRIT | Single Photon Ionization Resonance Ionization To Threshold |
| IGC | Inverse Gas Chromatog. |
| LALA | Large Area Lyman Alpha |
| UVPES | Ultraviolet Photoelectron Spectroscopy |
| IRES | Infrared Emission Spectroscopy |
| OOS | Optical-oscillator Strength |