As with any vacuum tube, there is a cathode, which emits electrons into the vacuum and an anode to collect the electrons, thus establishing a flow of electrical current, known as the beam, through the tube. A high voltage power source, 40 kV in the case of our tube, called the tube voltage, is connected across cathode and anode to accelerate the electrons. Electrons from the cathode collide with the anode material (tungsten) and accelerate other electrons, ions and nuclei within the anode material. About 1% of the energy generated is emitted/radiated, usually perpendicular to the path of the electron beam, as X-rays. The rest of the energy is released as heat. What would the maximum speed be of these electrons that strike the copper plate?
As with any vacuum tube, there is a cathode, which emits electrons into the vacuum and an anode to collect the electrons, thus establishing a flow of electrical current, known as the beam, through the tube. A high voltage power source, 40 kV in the case of our tube, called the tube voltage, is connected across cathode and anode to accelerate the electrons. Electrons from the cathode collide with the anode material (tungsten) and accelerate other electrons, ions and nuclei within the anode material. About 1% of the energy generated is emitted/radiated, usually perpendicular to the path of the electron beam, as X-rays. The rest of the energy is released as heat. What would the maximum speed be of these electrons that strike the copper plate?
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Transcribed Image Text:An X-ray tube is a vacuum tube that converts electrical input power into X-rays. The availability of
this controllable source of X-rays created the field of radiography, the imaging of partly opaque
objects with penetrating radiation. In contrast to other sources of ionizing radiation, X-rays are only
produced as long as the X-ray tube is energized. X-ray tubes are also used in CT scanners, airport
luggage scanners, X-ray crystallography, material and structure analysis, and for industrial
inspection. Increasing demand for high-performance Computer tomography (CT) scanning and
angiography systems has driven development of very high performance medical X-ray tubes.
As with any vacuum tube, there is a cathode, which emits electrons into the vacuum and an anode to
collect the electrons, thus establishing a flow of electrical current, known as the beam, through the
tube. A high voltage power source, 40 kV in the case of our tube, called the tube voltage, is
connected across cathode and anode to accelerate the electrons. Electrons from the cathode
collide with the anode material (tungsten) and accelerate other electrons, ions and nuclei within the
anode material. About 1% of the energy generated is emitted/radiated, usually perpendicular to the
path of the electron beam, as X-rays. The rest of the energy is released as heat. What would the
maximum speed be of these electrons that strike the copper plate?
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