In 2008, Lawrence Livermore National Laboratory reported being able to generate large quantities of this particle by shining their Titan laser at a one millimeter thick piece of gold. The then-recent discovery of this particle led Homi J. Bhabha to study his namesake scattering. Nondestructive probing of defects (15[1])in solids can be achieved by studying the gamma rays emitted by the annihilation of this particle. (*) Glucose is substituted with fluorine-18 (10[2])to create a tracer that acts as a source of this particle (10[2])in one imaging technique. (10[1])This particle was predicted to exist prior to its actual (10[1])discovery by the allowance of certain valid negative energy solutions in Dirac’s equation. (-5[1])This particle is the smallest lepton in the Standard Model that has a positive (10[1])charge. For 10 points, name this antiparticle that is the partner to the electron. ■END■ (10[1])