Question

Radiation produces at very discrete energies of approx 69 kiloelectron colts (kev) when electrons interact with the K shell of the tungsten target atom is called?

1) Bremsstrahlung
2) Characteristic radiation
3) Compton scattering
4) Photoelectric effect

Answer 1

Characteristic radiation occurs when an electron fills an inner-shell vacancy in an atom, with the emitted x-ray energy being distinct to that element, such as approximately 69 keV for tungsten.

Step-by-step explanation:

The radiation produced at very discrete energies of approximately 69 keV when electrons interact with the K shell of the tungsten target atom is called Characteristic radiation. This form of x-ray radiation occurs when an electron makes a transition to fill an inner-shell vacancy, particularly in heavy elements like tungsten.

High accelerating voltages are required to eject inner-shell electrons, and in the case of tungsten, this is at least 72.5 kV. When such an inner-shell vacancy is filled, especially for the n = 1 shell in tungsten, the photon energy is distinctly characteristic of the element.

Radiation produced at very discrete energies of approximately 69 kiloelectron volts (keV) when electrons interact with the K shell of the tungsten target atom is called characteristic radiation.

Therefore the correct option is 2) Characteristic radiation.