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.
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.
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+