DEXA: Radiation Safety

Production of X-Rays

Intro || Types || Production || Interaction || Attenuation || Biological Effects || Gas Detectors || Scintillation Counters || Protection Principles || Units || Practical || DEXA Theory || Dosimetry || References


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The X-Ray Tube

Most (>99%) of the energy in the electron beam is converted to heat - the remainder producing X-rays through:

Kilovoltage: 25 - 150 kV

Tube current: 1 - 1,000 mA

Anode material: W commonly

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The Ideal X-Ray Energy Spectrum

Maximum energy: controlled by the kilovoltage

Intensity: controlled by the mA

Ideal spectrum is filtered by XRT components

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Intro || Types || Production || Interaction || Attenuation || Biological Effects || Gas Detectors || Scintillation Counters || Protection Principles || Units || Practical || DEXA Theory || Dosimetry || References


Kieran Maher

Last Updated: 24 Jan '98