Gamma Rays are electromagnetic radiation , just like light is, and it travels the speed of light, 3 x 10^8 m/s . It will always be the fastest because alpha's & beta's are particles with mass and cannot travel the speed of light. The speeds of alpha's & beta's can be different in different situations and do not always have the same speed, like gammas.
A fast moving beta particle is simply a beta particle with a high kinetic energy. Beta particles are emitted from an atomic nucleus during what is called beta decay, and they emerge with a lot of kinetic energy. Note that there are two different kinds of beta particles, and they are electrons and positrons. The later is an anti-electron, which is a form of antimatter. Use the links below to related questions here and review their answers to get the complete picture.
Alpha particles, the big helium atom ones, travel at 5-7% of the speed of light, or around 15 million meters per second.
However, being such a large particle, they only travel a few centimeters in the air.
Beta particles, electrons created from the splitting of a neutron, travel much faster, at anywhere between 30-90% of the speed of light.
Beta particles tend to travel up to a few meters in air.
There's also gamma radiation, which travels at the speed of light, but that's a wave, not a particle.
Several meters in air or tens of mm into the skin.
Alpha particles have approximately the mass of a helium atom, whereas beta particles have the mass of an electron. Thus alpha particles are heavier.
Alpha particles have a kinetic energy of about 5 MeV, and a velocity of about 5% the speed of light.
a. an alpha particle
In this context, we call an electron a beta particle.
because it is an electron which orbits the nucleus
A machine that smashes atoms together in order to observe what the universe may have looked like seconds after the "Big Bang" is called a particle accelerator. who ever is asking this is wondering what its CALLED not what it does! btw: Particle accelerator.
fast
No, a delta particle is not a fast moving electron given off by a nucleus during radioactive decay. The electron described here is a beta particle, and specifically a beta minus particle. It is given off in (no surprise) beta minus decay. A link to a related question can be found below.
its called a beta particle, but its an electron
A beta particle has an electric charge of -1 because beta particles are both lightweight and fast moving, they have a greater penetrating power than alpha particles.
There are two types of beta decay, and they are beta plus (beta +) decay and beta minus (beta -) decay. A post already exists on beta decay, and a link to that related question can be found below.
One part of a beta- particle. The other part is an electron antineutrino
Fast moving electrons are equivalent to beta radiation.
A fast moving electron given off as part of a nuclear reactions is a beta particle. Also, anti-electrons, known as positrons, are beta particles. Electrons are involved in beta- decay, along with anti-neutrinos; and positrons are involved in beta+ decay, along with neutrinos.
An alpha particle is a helium nucleus, consisting of 2 protons and 2 neutrons. Beta particles are fast moving electrons that are emitted from a nucleus when a neutron decays into a proton and an electron. Since 1 electron has 1/1837 the mass of a proton, the alpha particle is roughly 7348 times the mass of the electron.
The strength of a beta particle is its ability to cross the absorber to reach the detector.Now the strength of a beta particle depends upon the energy of the beta particle and thickness of the absorber.
A positively charged particle that is also a beta particle is a Positron.
Beta
The difference between a beta plus and beta minus particle is the electrical charge. The charges are equal, but opposite. The beta minus particle is an electron with a negative charge, while the beta plus particle is an anti-electron or positron with a positive charge.