Yes, antiprotons and positrons can indeed be used in particle accelerators, just like electrons and protons. Particle accelerators are devices that accelerate charged particles to high speeds using electromagnetic fields. These accelerated particles are then used for various purposes, such as fundamental particle physics research, medical applications, or industrial processes.
Antiprotons are the antiparticles of protons, carrying a negative charge. Positrons are the antiparticles of electrons, carrying a positive charge. Both antiprotons and positrons can be produced artificially and injected into particle accelerators.
In fact, particle accelerators such as the Large Hadron Collider (LHC) at CERN in Geneva, Switzerland, are designed to accelerate and collide beams of protons and antiprotons at extremely high energies. This allows scientists to study the fundamental properties of matter and the universe at very small scales.
Similarly, positrons are commonly used in positron emission tomography (PET) scanners, which are medical imaging devices. In PET scans, positrons are emitted by a radioactive substance injected into the body, and their annihilation with electrons produces detectable gamma rays that are used to create images of the body's internal structures.
So, both antiprotons and positrons play important roles in particle physics research and various applications of particle accelerators.