| For that purpose, experts suggest additional sensors such as gamma ray detectors to catch smuggled nuclear material. |
| The gamma ray spectrometer suite is unique in that it senses the composition below the surface to a depth as great as one meter. |
| A medium that emits light in response to an interaction between a gamma ray and the medium is provided. |
| An electronic signal is generated and a computer composes an image of the gamma ray distribution. |
| That kind of resolution is good for small objects like neutron stars, gamma ray bursts and black holes. |
| The topmost paper was a graph measuring gamma ray radiation from sunspots over the past few months. |
