The outer layer of NEUDOSE's Charged & Neutral Particle Tissue Equivalent Proportional Counter (CNP-TEPC), our unique radiation detector, is made from a plastic scintillator material. The plastic scintillator is shown in blue on the accompanying image. When charged particles in space interact with this hemispherical detector, light is emitted. By collecting this light, it is possible to determine that the radiation passing through the detector is a charge carrier. This is the first step in how our novel CNP-TEPC can distinguish charged particles from neutral radiation.