Gamma and Cosmic Ray Astrophysics

 

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  The mission of the Gamma and Cosmic Ray Astrophysics Branch of the Space Science Division (SSD), at the Naval Research Laboratory (NRL) is to conduct a broadly-based research program relating to the gamma-ray and cosmic-ray enviroment and the use of gamma ray and energetic particle detection systems in space. In support of this mission, the Branch undertakes a program of (1) observational and theoretical investigations of gamma-ray, X-ray and cosmic-ray emissions from celestial sources, (2) monitoring high-energy solar flare activity, (3) monitoring energetic particles in the near-space environment and in the upper atmosphere, (4) development and evaluation of gamma-ray and particle sensor systems for applications in space. Program activities include the study of fundamental physical processes in extremely violent celestial sources, evaluation of the cosmic-ray environment and the effect of cosmic-ray induced damage on microelectronics and on manned systems in space, and the development of improved detection systems to monitor phenomena which relate to DoD systems. The unique capabilities of nuclear spectroscopy are utilized to study the nuclear component of matter in astrophysical sites and to develop an improved potential for surveillance of nuclear debris and materials from space.