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That was the dangerous kind, because both beta particles and gamma rays could penetrate clothing and skin.
The beta particles emanating from radium were soon identified with the electrons of the cathode ray.
They are much larger than beta particles, and have less penetrative power.
He turned to aluminium, which emitted an alpha particle and produced sodium, which then decayed into magnesium by beta particle emission.
In other cases the product nucleus is unstable and decays, typically emitting protons, electrons (beta particle) or alpha particles.
He tried lead, without success, and then fluorine in the form of calcium fluoride, which emitted an alpha particle and produced nitrogen, decaying into oxygen by beta particle emission.
There are several different kinds of these particles, but the majority are alpha particles, beta particles, neutrons, and protons.
Count rates are normally associated with the measurements of particles, such as alpha particles and beta particles.
Negatively charged beta particles or positively charged alpha particles, positrons or fission fragments may be utilized.
Although beta particles scatter much more than alpha particles, a range can still be defined; it frequently amounts to several hundred centimeters of air.
These systems use radioisotopes that produce low energy beta particles or sometimes alpha particles of varying energies.
A material that spontaneously emits this kind of radiationwhich includes the emission of alpha particles, beta particles, and gamma raysis considered radioactive.
There are special plastic shields that stop beta particles, and air will stop most alpha particles.
Typical particles include alpha particles, beta particles and neutrons, as well as mesons that constitute cosmic rays.
The first beta decays are rapid and may release high energy beta particles or gamma radiation.
Beta particles are electrons or positrons and can travel farther than alpha particles in air.
Such contamination presents a hazard because of the radioactive decay of the contaminants, which emit harmful ionising radiation such as alpha particles or beta particles, gamma rays or neutrons.
A sample of radium metal maintains itself at a higher temperature than its surroundings because of the radiation it emits alpha particles, beta particles, and gamma rays.
