Simulation of nuclear quadrupole resonance for sensor probe optimization

► NQR-standoff detection has been investigated. ► Intensity of the detected NQR was calculated taking into account the total process. ► Nuclei dipole at the sample was nonlinearly induced by the RF radiation from a coil. ► The NQR signal emitted from the nuclei dipole was detected by the same coil. ► This simulation method was evaluated using a single and a gradiometer coil.