Alpha decay:- It is a process of disintegration of an element which involves formation of a new element by loosing an alpha particle(He2+).
Example:-
84Po214 --------->82Pb210 + 2He4 + Q
Where subscripts denote atomic number, Superscripts denote Atomic Mass and Q is the energy released in the process.
Beta Decay:- It is also a process of disintegration but the difference from alpha decay lies in the fact that an electron is given out in the process rather than alpha particle.
Example:-
0n1 ----->1p1 + -1e0 + anti-neutrino.
Where n is neutron, p is proton, e is electron, subscripts are atomic charge and and superscripts are atomic mass.
Alpha Particle
When a neutron breaks down into a proton and electron it is called decay. In this specific case it is Beta - (minus) decay since it is producing an electron (it also produces an electron antineutrino). If the result were a positron instead of an electron it would be called Beta + decay. Since a new proton has been made the element is also changed into the next highest element on the periodic table. So for instance, Carbon 14 will beta- decay into Nitrogen 14. Both types of Beta decay are mediated or assisted by the weak nuclear force with the W- and W+ bosons.
Beta particle symbols: e- or β- or B- (electrons) or e+ or β+ or B+ (positrons). If the - or + sign is omitted, assume that the beta particles are electrons. The Greek beta character is usually preferred, but a B is acceptable if Greek fonts are not available.
There are no positrons in the nucleus of any atom. Positrons are anti-electrons; they are antimatter. They could be said to be the antimatter equivalent of the electron, and, as such, they would be present around the nucleus of an antimatter atom as the electrons are present around the nucleus of a "regular" atom. Positrons can be produced in atomic nuclei by some kinds of radioactive decay, and they can be observed to be leaving a nuclear reaction called beta plus decay. But the positron leaves the nucleus of an atom as soon as it is created. It does not (cannot) exist in the nucleus of an atom.
This is called inverse beta decay and it forms a neutron. Normally a neutron will decay into a proton and electron, but the opposite will happen given enough energy. Coincidentally, this is how neutron stars are formed (the immense pressure from gravity overcomes the force separating protons and electrons.)
Alpha decay emits an alpha particle, which consists of two protons and two neutrons. Beta decay emits either an electron (beta minus decay) or a positron (beta plus decay).
From weakest to strongest decay, the order is: Gamma decay - involves the emission of high-energy photons. Beta decay - involves the emission of beta particles (electrons or positrons). Alpha decay - involves the emission of alpha particles (helium nuclei).
Beta decay is a non-example of alpha decay. Beta decay involves the emission of a beta particle (either an electron or a positron) from an unstable atomic nucleus, whereas alpha decay involves the emission of an alpha particle (helium nucleus) from a nucleus.
Oxygen-17 would become fluorine-17 after undergoing alpha decay, and then it would decay into oxygen-17 again after undergoing beta decay. Alpha decay involves emitting an alpha particle comprising two protons and two neutrons, while beta decay involves either emitting an electron (beta minus decay) or a positron (beta plus decay) to change the nucleus.
alpha decay, beta decay, and gamma radiation
The four types of nuclear decay are alpha decay, beta decay, gamma decay, and neutron decay. Alpha decay involves the emission of an alpha particle, beta decay involves the emission of beta particles (either electrons or positrons), gamma decay involves the emission of gamma rays, and neutron decay involves the emission of a neutron.
nuclear decay, such as alpha decay or beta decay.
alpha decay, beta decay, and gamma radiation
Uranium-239 does NOT decay by alpha decay, it decays only by beta and gammadecay.
The equation for the beta decay of 87Kr is: 3687Kr --> 3787Rb + -10e where -10e represents a negative beta particle or electron.
Alpha and beta decay are often accompanied by the emission of gamma radiation. Gamma radiation is a high-energy form of electromagnetic radiation that helps to stabilize the nucleus after alpha or beta decay.
alpha, beta, gamma.