Nebenkernunterdrückung
Nebenkernunterdrückung refers to a phenomenon observed in nuclear magnetic resonance (NMR) spectroscopy. It is a technique used to suppress the signal arising from a specific nucleus, typically a proton (¹H), that is not of primary interest in the experiment. This is achieved by selectively irradiating the nucleus to be suppressed at its resonant frequency. This irradiation causes the nucleus to undergo rapid transitions between its energy states, effectively dephasing its magnetization and preventing it from contributing to the overall NMR signal.
The primary purpose of Nebenkernunterdrückung is to improve the clarity and sensitivity of NMR spectra. By
There are several methods for implementing Nebenkernunterdrückung, including continuous wave (CW) irradiation and pulsed irradiation techniques.