NUCLEAR QUADRUPOLE RESONANCE SIGNAL DETECTOR Russian patent published in 2024 - IPC G01N24/08 

FIELD: physics.

SUBSTANCE: use for detection of nuclear quadrupole resonance signals. Essence of the invention consists in the fact that the nuclear quadrupole resonance signal detection device comprises a shielded chamber and outside the shielded chamber NQR detection elements; inside the shielded chamber: a sweeping frequency generator for the frequency range from 10 kHz to 10 MHz, a frequency pulse former, a time pulse former, an operation mode selection unit, a power amplifier, a matching device of the transmitting antenna system; in-phase receiving antenna system with reception of normally and parallel polarized electromagnetic waves, in which N in-phase receiving lines from 6_1N to 6_NN, each of N in-phase receiving lines contains N receiving antennae; transmitting in-phase antenna system with radiation of normally polarized wave, in which N emitters from 7₁ to 7_N; receiving antenna system information generator, filter unit, nuclear quadrupole resonance radiation spectrum analysis unit, nuclear quadrupole resonance radiation spectrum analysis unit, NQR indicator, weak NQR signals analytical unit, ambient temperature control unit; wherein the following components are additionally introduced inside the shielded chamber: a swinging frequency generator energy distributor for powering the emitters outside the shielded chamber, a matching unit for external receiving cables, a switch Vk.4 for performing NQR studies inside and outside the shielded chamber; and outside the shielded chamber there are elements: an external transceiving cable, an external radiating cable, an external receiving cable, an external shielded chamber with the possibility of analysing carried loads.

EFFECT: providing the possibility of analysing the frequency properties of the secondary radiation field of the investigated objects and controlling their levels, reducing the weight and size of the device, as well as providing the possibility of NQR research in a shielded chamber for mass-dimensional carriers.

34 cl, 43 dwg