Positrons are indeed the antiparticles of electrons, meaning they have the same mass but opposite charge. While the existence of positrons is well-established in particle physics, the concept of "positricity" as an equivalent of electricity is not commonly used or recognized in the same way.
In terms of electrical phenomena, such as electric current or conductivity, positrons can behave similarly to electrons. When a positron moves through a conductive material, it can contribute to the flow of positive charge, which is equivalent to a flow of current in the opposite direction of electron flow. However, it's important to note that the abundance of positrons in our everyday environment is much lower compared to electrons, as electrons are the predominant carriers of electric charge.
Regarding insulators, their behavior with respect to positrons would depend on their specific properties. Insulators are materials that do not readily conduct electric current. In the case of electrons, insulators typically have a large energy gap between the valence band (occupied electron states) and the conduction band (unoccupied electron states). This energy gap makes it difficult for electrons to move freely and carry current.
If positrons were to interact with an insulator, their behavior would depend on the details of the material's electronic structure and the specific interaction between positrons and the atomic or molecular structure of the insulator. In general, the presence of positrons in an insulator would not lead to significant electric current flow, as insulators are designed to restrict the flow of both electrons and positrons.
In summary, while positrons can participate in electrical phenomena, the concept of "positricity" is not widely used. The behavior of positrons in materials, including insulators, depends on their interaction with the material's electronic structure and the specific conditions of the system.