Compared to alpha and beta radiation, they have a higher level of penetration, which makes gamma rays useful for medical imaging, as well. Cancer cells take up the gamma-emitting substance differently to normal cells, so using the gamma camera allows to locate the position of a cancer cell accurately. PET scans also depend on the detection of gamma rays. X-rays have a larger wavelength and hence a smaller frequency than gamma.
X-ray photons carry more energy than gamma photons. Therefore, gamma rays have a stronger ionizing ability. About the Author: Nipun. View all posts. Gamma rays are a lot more dangerous and hazardous to human health than X-rays. Moreover gamma rays are the highly penetrating and highly energetic ionizing radiation.
On prolonged exposure to living beings they can cause cancer. Since there wavelength is very small, they have an ability to penetrate through any gap even if it is a sub-atomic gap. The most damaging are the ones which fall in the window of 3 and 10 MeV. Gamma rays are sometimes produced along with other types of radiation like alpha and beta.
However this is not the case with x rays. Summary: 1. Gamma rays cause more harm to human body than the X- rays. Gamma rays have shorter wavelengths than the X-rays.
X rays are emitted by the electrons outside the nucleus, and gamma rays are emitted by the excited nucleus itself. X rays are used in hospitals for taking X-rays but gamma rays are not. Differences Between X-rays and Gamma rays. Difference Between Similar Terms and Objects. MLA 8 Kumar, Manisha. It can come from unstable atoms that undergo radioactive decay , or it can be produced by machines. Radiation travels from its source in the form of energy waves or energized particles. There are different forms of radiation and they have different properties and effects.
Non-ionizing radiation has enough energy to move atoms in a molecule around or cause them to vibrate, but not enough to remove electrons from atoms. Examples of this kind of radiation are radio waves, visible light and microwaves.
Ionizing radiation has so much energy it can knock electrons out of atoms, a process known as ionization. Ionizing radiation can affect the atoms in living things, so it poses a health risk by damaging tissue and DNA in genes. Ionizing radiation comes from x-ray machines, cosmic particles from outer space and radioactive elements.
Radioactive elements emit ionizing radiation as their atoms undergo radioactive decay. Radioactive decay is the emission of energy in the form of ionizing radiation ionizing radiation Radiation with so much energy it can knock electrons out of atoms. The ionizing radiation that is emitted can include alpha particles alpha particles A form of particulate ionizing radiation made up of two neutrons and two protons.
Alpha particles pose no direct or external radiation threat; however, they can pose a serious health threat if ingested or inhaled.
Some beta particles are capable of penetrating the skin and causing damage such as skin burns. Beta-emitters are most hazardous when they are inhaled or swallowed. Gamma rays can pass completely through the human body; as they pass through, they can cause damage to tissue and DNA. Radioactive decay occurs in unstable atoms called radionuclides.
The energy of the radiation shown on the spectrum below increases from left to right as the frequency rises. Other agencies regulate the non-ionizing radiation that is emitted by electrical devices such as radio transmitters or cell phones See: Radiation Resources Outside of EPA. Alpha particles come from the decay of the heaviest radioactive elements, such as uranium , radium and polonium. Even though alpha particles are very energetic, they are so heavy that they use up their energy over short distances and are unable to travel very far from the atom.
The health effect from exposure to alpha particles depends greatly on how a person is exposed. Alpha particles lack the energy to penetrate even the outer layer of skin, so exposure to the outside of the body is not a major concern.
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