A device intended to produce useful fusion energy, the Farnsworth–Hirsch fusor, is still useful as a source of these particles. Bonner spheres are used to determine the energy spectrum of these particles. Polonium-beryllium sources of these particles called howitzers are used to charge radioactive samples for decay experiments. Hafnium and (*) boron have high cross-sections for these particles, so they are used in control rods. The fission of uranium-235 caused by one of these particles produces
A device intended to produce useful fusion energy, the Farnsworth–Hirsch fusor, is still useful as a source of these particles. Bonner spheres are used to determine the energy spectrum of these particles. Polonium-beryllium sources of these particles called howitzers are used to charge radioactive samples for decay experiments. Hafnium and (*) boron have high cross-sections for these particles, so they are used in control rods. The fission of uranium-235 caused by one of these particles produces three more of them to sustain a chain reaction. These particles, composed of two down quarks and an up quark, were discovered by James Chadwick in 1932. For 10 points, name this neutral subatomic particle that occupies the nucleus along with protons.
A device intended to produce useful fusion energy, the Farnsworth–Hirsch fusor, is still useful as a source of these particles.
neutrons [prompt on hadrons and baryons; do not accept or prompt on “neutrinos”] &lt;JL, Phys&gt;