A method of generating X-rays includes providing a field-emission diode including two electrodes separated by a gap, a first conductor, a first insulator on a surface of the first conductor, a second insulator on a surface of the first insulator that is not in contact with the first conductor, and a second conductor. The first insulator and the second insulator have trapped electrons at an interface therebetween, and are provided between the first conductor and the second conductor. The method further includes moving the second conductor with respect to the first conductor to induce electrons on the second conductor via electrostatic induction; accelerating the induced electrons across the gap of the field-emission diode; and striking a target with accelerated electrons to produce an X-ray. The first insulator and the second insulator are not the same.

A method of generating X-rays includes providing a field-emission diode including two electrodes separated by a gap, a first conductor, a first insulator on a surface of the first conductor, a second insulator on a surface of the first insulator that is not in contact with the first conductor, and a second conductor. The first insulator and the second insulator have trapped electrons at an interface therebetween, and are provided between the first conductor and the second conductor. The method further includes moving the second conductor with respect to the first conductor to induce electrons on the second conductor via electrostatic induction; accelerating the induced electrons across the gap of the field-emission diode; and striking a target with accelerated electrons to produce an X-ray. The first insulator and the second insulator are not the same.

A device includes a first capacitive energy module and a second capacitive energy module. The first capacitive energy module comprises a first tray that is configured to house a first plurality of capacitive energy components, a first electrode, and a second electrode. The second capacitive energy module comprises a second tray that is configured to house a second plurality of capacitive energy components, a third electrode, and a fourth electrode. The first capacitive energy module is connected to the second capacitive energy module via a plug connector that makes a solid connection.

A mobile X-ray imaging apparatus and a method of controlling the mobile X-ray imaging apparatus are provided. The mobile X-ray imaging apparatus includes an X-ray source mounted in a movable main body, a battery configured to supply operating power to the X-ray source, a charger configured to supply charging power to charge the battery, and a controller configured to block charging of the battery while X-rays are radiated.

A modulator is configured to provide pulse power output signals to a linac-based x-ray source. The modulator includes control circuitry on at least one first printed circuit board and driver circuitry on at least one second printed circuit board in reversible mechanical and electrical communication with the at least one first printed circuit board. The driver circuitry includes a driver loop wire extending from the at least one second printed circuit board. The modulator further includes a plurality of Marx cells on a plurality of third printed circuit boards in reversible mechanical and electrical communication with the at least one first printed circuit board. Each Marx cell includes a transformer configured to trigger the Marx cell, and the driver loop wire includes a common primary winding of the transformers of the plurality of Marx cells.

A modulator is configured to provide pulse power output signals to a linac-based x-ray source. The modulator includes control circuitry on at least one first printed circuit board and driver circuitry on at least one second printed circuit board in reversible mechanical and electrical communication with the at least one first printed circuit board. The driver circuitry includes a driver loop wire extending from the at least one second printed circuit board. The modulator further includes a plurality of Marx cells on a plurality of third printed circuit boards in reversible mechanical and electrical communication with the at least one first printed circuit board. Each Marx cell includes a transformer configured to trigger the Marx cell, and the driver loop wire includes a common primary winding of the transformers of the plurality of Marx cells.