These shields offer advantages over ones made from lead foil or leaded glass.

The Quantitative and Qualitative Parameters in this table are those of three shields that give equivalent protection against ionizing radiation.

COR-RA absorbs not only x-rays but also neutrons and g rays without adverse effects on optical or mechanical performance. The formulation of COR-RA with the most favorable mechanical-durability and optical properties contains 22 weight percent of bismuth to absorb x-rays, plus 45 atomic percent hydrogen for shielding against neutrons.

This work was done by David Edwards of Marshall Space Flight Center and John Lennhoff and George Harris of Triton Systems, Inc. For further information, access the Technical Support Package (TSP) free on-line at www.techbriefs.com/tsp under the Materials category. MFS-31371.

This Brief includes a Technical Support Package (TSP).

Transparent Metal-Salt-Filled Polymeric Radiation Shields (reference MFS-31371) is currently available for download from the TSP library.

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