X-ray hardness depends on which of the following parameters?

Depending on the energy of a single X-ray photon and the density of X-ray photons.

X-ray is an electromagnetic wave with a short wavelength. The wavelength range is 0.0006~50nm. At present, the commonly used X-ray wavelength range for X-ray diagnosis is 0.008 ~ 0.03 1 nm (equivalent to 40 ~ 150 kV). In the electromagnetic radiation spectrum, it is between gamma rays and ultraviolet rays, which is much shorter than the wavelength of visible light and invisible to the naked eye.

X-rays can excite fluorescent substances (such as zinc cadmium sulfide and calcium tungstate). ) to produce visible fluorescence. That is, X-rays act on the fluorescent substance, so that X-rays having a short wavelength are converted into fluorescence having a long wavelength. This conversion is called fluorescence effect. This feature is the basis of fluoroscopy.

Extended data:

Matters needing attention in X-ray inspection:

Users need to pay attention to the lead equivalent of various protective articles.

Lead-containing rubber is brittle and soft, easy to be worn thin, worn out and broken, so it should be checked frequently or preventive measures should be taken.

Pay attention to the X-ray dose received by patients during X-ray examination, and do not exceed 1.00R each time.

Protective measures should be taken for non-inspection parts of users. Users should pay attention to their posture when casting photos, and cover the non-irradiated areas, especially the gonads, with lead rubber. The pelvic examination of women of childbearing age is best controlled within 10 days after menstruation. Pregnant women generally do not have X-ray examination, especially in the third month of pregnancy.

When the mobile X-ray machine is exposed, X-ray workers need to keep a distance of 2 meters from the X-ray tube head and the examinee, and pay attention to the safety of people around them.

Baidu encyclopedia -X-ray