Long wavelength X-rays primarily increase what?

The choice stating that long wavelength X-rays primarily increase absorption is grounded in the understanding of how X-rays interact with matter. Long wavelength X-rays, which are associated with lower energy, have a greater tendency to be absorbed by materials, especially dense materials like lead or biological tissues. This increase in absorption occurs because these X-rays have a wavelength that can match the energy levels of electrons within the absorbing material, permitting more effective interaction.

While it's true that long wavelength X-rays can also result in Compton interactions and contribute to scattered radiation, their primary characteristic is the enhanced likelihood of absorption. Scattered radiation typically pertains to interactions that happen when X-rays collide with atoms and deflect in various directions, while Compton interactions involve energy loss and deflection of X-rays through collisions with electrons.

Understanding the nature of X-ray wavelengths and their corresponding energies is crucial, as it directly impacts their interactions with various materials and the safety protocols required during radiographic procedures. Hence, while other forms of interaction occur, absorption remains the principal outcome for long wavelength X-rays.