The Alpha-Particle, Photon, and X-Ray Spectrometer was designed to measure the elemental composition of Martian soils.

This method corresponds to the various possible ways of distributing the energy of neutrons and protons into fundamental boson and fermion nucleon cluster groups or building blocks such as the alpha-particle, helium-3, deuterium, triton, di-neutron, etc.

However, the beryllium-8 ground state has almost exactly the energy of two alpha particles.

For more details of this early work, see Alpha particle.

Alpha particles cannot even go through a few centimeters of air.

Breathing in too many alpha particles can cause serious health consequences, including cancer.

We know alpha particles can change computer memory cells randomly.

So they set out to test how thick a sheet of gold was needed to stop the alpha particles.

Even very energetic alpha particles can be stopped by a single sheet of paper.

The alpha particle is the point of it all.

Two alpha particles and a gamma ray walk into a bar.

The alpha particle is trapped in a potential well by the nucleus.

Each time an alpha particle reached the screen it produced a flash.

It gives off 5,000 times more alpha particles than does the same amount of radium.

Nuclear spheres for making a molecular model of an alpha particle.

Roughly 20 percent of the fusion energy will be transferred to the alpha particles.

The original version was only capable of detecting alpha particles.

Radon releases alpha particles as it continues to break down.

In your lungs, alpha particles slam into tissue and cause damage.

From this point, alpha particles can escape, and in quantum mechanics, after a certain time, they do so.

Consequently, alpha particles appear frequently on the right hand side of nuclear reactions.

Alpha particles have little penetrating power; most cannot penetrate through human skin.

The emission of alpha particles by the radium was responsible.

The gear was standard military stuff, designed for detection of alpha particles and maybe beta.

This makes it possible to calculate the mass of the nucleus hit by the alpha particle.

Some of the alpha particles are absorbed by the atomic nuclei.

Heat produced by the deceleration of these alpha particles makes it warm to the touch.