Lifetime of positronium in carcinogenic and noncarcinogenic chemicals

Resumo

The presence or lack of carcinogenic properties of substances is investigated by positron annihilation spectroscopy. This method is based on the electrophilic nature of carcinogens and the sensitivity of positron annihilation lifetime spectroscopy, that is, a change in the lifetime of positronium depending on the electron density of a medium. We consider differences in the annihilation time of certain synthetic and natural dyes. The obtained data are compared with the boundary value of the positronium lifetime, separating all the substances under investigation into carcinogens and noncarcinogens.