Linear Accelerators with Tungsten Alloy

Linear accelerators (linacs) which produce megavoltage X-rays. The first use of a linac for medical radiotherapy was in 1953 (see also radiotherapy). Since its high density and atomic mass, tungsten alloy exhibits excellent absorption behaviour against electromagnetic radiation such as X-rays and gamma-radiation. Tungsten alloy material usually be placed in linear accelerators.  Commercially available medical linacs produce X-rays and electrons with an energy range from 4 MeV up to around 25 MeV. The X-rays themselves are produced by the rapid deceleration of electrons in tungsten alloy, which produces an X-ray spectrum via bremsstrahlung radiation. The shape and intensity of the beam produced by a linac may be modified or collimated by a variety of means. Thus, conventional, conformal, intensity-modulated, tomographic, and stereotactic radiotherapy are mostly produced by specially-modified tungsten alloy linear accelerators.

The photograph below shows tungsten alloy materials to manufacture linear accelerators.

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