Generally no radiation is safe. You cannot "inject" radiation into anything because it is the product of various unstable nuclei decaying. Alpha radiation is much more ionising than gamma, but much less penetrating than it. That makes it more dangerous if it is inside your body; it can be stopped by skin. Therefore you would have to swallow a sample of a radioactive material. However, gamma radiation is always emitted together with alpha or beta radiation.
gamma radiation
Alpha, Beta and Gamma
Gamma radiation
All forms of radioactive decay have emissions. Some, however, do not emit alpha, positive or negative beta, or gamma particles, and do not emit protons or neutrons either. In these, which include electron capture and double electron capture, neutrinos are emitted, but these are still considered particles.
Gamma
Externally, gamma radiation is dangerous because it can penetrate the body. Alpha is most dangerous if ingested.
Actually, gamma is the ONLY type of radiation ray. Since the three types of radiation are alpha particles, beta particles, and gamma rays, and the other two are particles, technically, gamma rays are the only radiation rays. If that is not what you are looking for, then I recommend rephrasing your question.
Gamma radiation is not a particle, is it a high energy electromagnetic wave.
No Gamma Rays do not have mass. All electromagnetic radiation has no mass.
gamma radiation
Free radiation I suppose. But gamma radiation, is charge free. As is UV, IR, ... ..
Alpha, Beta and Gamma
lead is a very dense material and can stop most radiation particles, although it is still dangerous as some gamma rays may get through.
alpha particles, beta particles, gamma radiation
gamma rays
Radioactive substances can emit alpha particles, gamma radiation (gamma rays) and beta radiation (beta particles). What they do not emit is delta radiation.It causes transmutation.It has a mass of 4 amus.
Of alpha, beta and gamma radiation, gamma radiation has the greater ability to penetrate either shielding or living tissue. The penetration issue aside, a contact source that is an alpha emitter can do more tissue damage than beta or gamma radiation. Alpha and beta radiation are particulate radiation. They involve a particle. Gamma radiation is electromagnetic radiation of high energy. Use the links below to learn more about each type of radiation and get a handle on what's up.