| ROENTGENS | Measures of gamma radiation exposure |
| SIEVERTS | Units of gamma radiation (8) |
| ROENTGEN | An unit of radiation exposure (8) |
| RADS | Units measuring radiation exposure |
| RONTGEN | International unit of dose of gamma rays (7) |
| LEAD | This metal, whose chemical symbol is Pb, is known for its ability to absorb gamma radiation and X-radiation. |
| ZINDEL | Paul ?, author of 1971 Pulitzer Prize for Drama winner The Effect of Gamma Rays on Man-in-the-Moon Marigolds (6) |
| AMALGAM | Mixture of gamma particles captivating a student (7) |
| IONS | Products of gamma rays |
| AMERICIUM | It emits gamma radiation - a potential crime, I hesitate to say |
| MARIGOLDS | "The Effect of Gamma Rays on Man-in-the-Moon ___" (Pulitzer-winning play) |
| PRAGMATISM | Such matter-of-factness can strip gamma of it (10) |
| ALGENIB | Traditional name of the star Gamma Pegasi in the constellation of Pegasus (7) |
| RAY | Follower of alpha, beta, gamma, and delta |
| BETA | ___ function (counterpart of a gamma function, in math) |
| FLAT | _ four, engine configuration of the Lancia Gamma (4) |
| DECAY | Follower of beta and gamma |
| RADIOACTIVITY | Spontaneous emission of alpha, beta or gamma particles by disintegrating atomic nuclei (13) |
| DELTA | After gamma, it's the shape of a wing (5) |
| KSTAR | Arcturus, Aldebaran, or Gamma Draconis |
