What is an advantage of X-ray over gamma ray sources for radiography?

The advantage of using X-ray sources over gamma ray sources in radiography is primarily due to the variable radiation energy provided by X-ray machines. X-ray equipment allows operators to adjust the energy levels of the X-rays, which means that the intensity and penetration can be tailored to suit different materials and thicknesses being inspected. This capability enables more versatility and control in radiographic testing, making it easier to optimize the imaging quality based on the specific characteristics of the object being tested.

With gamma rays, the radiation energy is fixed, which can limit the ability to adapt to different inspection scenarios. The ability to vary energy levels with X-rays is crucial in achieving clearer images and reducing the potential for artifacts, improving the overall effectiveness of the inspection process.

Other aspects, such as higher penetrating power, cost of equipment, and exposure times can vary depending on the circumstances and specific applications, but the unique ability to vary radiation energy is a standout benefit of X-ray radiography.