MATERIALS DEGRADATION AND SHIELDING PROPERTIES

Crain, S.H. and Mazur, J.E. and Looper, M.D., TID Effects of High-Z Material Spot Shields on FPGA Using MPTB Data, NASA/CR-2003-212638, George C. Marshall Space Flight Center , Marshall Space Flight Center, AL 35812, National Aeronautics and Space Administration, Washington, DC 20546-0001, July, 2003, pp. 20

Keywords:  radiation, electrons, photons, fpga, devices under test, spot shields, total ionizing dose, degradation

Abstract:  An experiment on the Microelectronics and Photonics Test Bed (MPTB) was testing field programmable gate arrays using spot shields to extend the life of some of the devices being tested. It was expected that the unshielded parts would fail from a total ionizing dose (TID) and yet the opposite occurred. The data show that the devices failing from the TID effects are those with the spot shields attached. This effort is to determine the mechanism by which the environment is interacting with the high-Z material to enhance the TID in these field programmable gate arrays.
 

    
Download Acrobat Reader!