226these are fast moving helium atoms. They have high energy, typically in the MeV range, but due to their large mass, they are stopped by just a few inches of air, or a piece of paper.
Bitan Chakraborty No, they are not Helium atoms.
5 Answers
226Alpha particles consist of two protons and two neutrons bound together into a particle identical to a helium nucleus, which is generally produced in the process of alpha decay
- Bitan Chakraborty Well said.............so it is just the Helium nucleus, with 2 units of positive charge.Upvote·0· Reply ·2013-01-27 20:39:40
226
23they are positively helium ions
- Bitan Chakraborty Near, but not specific.
23Alpha radiation is ionizing radiation resulting from decay of radioisotopes where an alpha particle is emitted.It is a slow moving radiation and can be stopped by a sheet of paper.
- Bitan Chakraborty Okay, but what is an alpha particle?
106By an alpha radiation we mean bipositively charged Helium nucleus being produced by the disintegration of a radioactive nucleus.
So an alpha particle = [He]2+