DEVICE FOR RECORDING DYNAMICS OF PYROELECTRIC GENERATION OF PULSED ELECTRON BEAMS OF NANOSECOND DURATION IN HEATING AND COOLING CYCLES OF LITHIUM NIOBATE CRYSTAL AT ATMOSPHERIC PRESSURE Russian patent published in 2023 - IPC G01R31/26 G01T1/00 H01J3/00 

FIELD: electronic engineering.

SUBSTANCE: used to establish optimal conditions for the generation of electron beams by solid-state pyroelectric elements. The registration device contains a heating block; a chamber at atmospheric pressure; pyroelectric crystal; copper anode; measuring resistor block; coaxial matching resistor; copper screw; female coaxial connector for transmission lines with a characteristic impedance of 50 Ohms; coaxial cable with a characteristic impedance of 50 Ohms with two male connectors. The chamber is made in the form of a copper hollow cylinder with a coaxially cylindrical pyroelectric crystal and a copper anode placed in it, connected by a cylindrical conductor to a measuring resistor block made in the form of a washer made of one-sided foil fiberglass with soldered chip resistors, connected by a copper screw to a cylindrical contact with a 50 Ohm matching coaxial resistor, the second cylindrical contact of which is connected to the central conductor of the female coaxial connector. The heating block is made in the form of a heat-conducting copper plate with a resistive heating element and a thermocouple connected to a controlled temperature controller with a programmable temperature heating mode. The cooling mode occurs naturally when the heating element is turned off and is controlled by a thermocouple.

EFFECT: reduction in distortions introduced by the electrical current recording circuit during pyroelectric generation in the heating and cooling cycles of lithium niobate crystals.

1 cl, 3 dwg