If you have a material that emitts Beta particles there is nothing that will effect that process. However, once the Betas are emitted you can block them with Aluminum or most anything else. How many you block will depend on how fast the Betas are going and how thick your blocking material is.
Radium-226 does not decay by beta decay. It decays by alpha decay to radon-222.
Radioactive decay; beta decay is a type of radioactive decay in which a beta particle (an electron or a positron) is emitted
After the beta decay of the isotope magnesium-28 the isotope aluminium-28 is formed. 28Al has 13 protons and 15 neutrons - the mass number is 28.
There is a difference between beta emitters and beta particles. In situations where an atomic nucleus exhibits nuclear instability due to too many neutrons for the number of protons or vice versa, that nucleus may undergo beta decay. It the decay event occurs, that atom is considered a beta emitter. The emitted particle is the beta particle. That's the difference. (There are two different beta particles, so check the articles on beta decay to get the scoop.)
because the total enegy of the decay is carried by beta particle and the nutrino.
aluminum-28
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.
Radium-226 does not decay by beta decay. It decays by alpha decay to radon-222.
gamma decay beta decay alpha decay
beta
Thorium 234: Beta decay. Atomic number increases by 1.
Beta decay is a property of atoms not molecules.
Radioactive decay; beta decay is a type of radioactive decay in which a beta particle (an electron or a positron) is emitted
After the beta decay of the isotope magnesium-28 the isotope aluminium-28 is formed. 28Al has 13 protons and 15 neutrons - the mass number is 28.
There is a difference between beta emitters and beta particles. In situations where an atomic nucleus exhibits nuclear instability due to too many neutrons for the number of protons or vice versa, that nucleus may undergo beta decay. It the decay event occurs, that atom is considered a beta emitter. The emitted particle is the beta particle. That's the difference. (There are two different beta particles, so check the articles on beta decay to get the scoop.)
It does not usually involve the atom's electrons, except for a type of decay called K capture. But the beta particles ejected in what is called beta decay are either electrons or positrons.
because the total enegy of the decay is carried by beta particle and the nutrino.