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X-Ray Penetration in Lead

Volume 12, Number 2 (May 1958) Page 58-59

The energy and angular distribution of photons emerging from a lead barrier exposed to 8- and 10-million electron volt X-rays have been determined by the National Bureau of Standards. (1). The experiment was undertaken by J. H. Hubbell, E. Hayward, and W. F. Titus of the Bureau staff to obtain previously unavailable data on transmitted radiation at high energies. Their results not only provide design data for nuclear equipment shielding but also verify the mathematical and computational methods now used in solving penetration problems.