GAMMA-RAY SPECTRA OF THE PRODUCTS OF THERMAL-NEUTRON FISSION OF 235U AT SELECTED TIMES AFTER FISSION
NAVAL RADIOLOGICAL DEFENSE LAB SAN FRANCISCO CA
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Experimental measurements of the gamma-ray spectra emitted by the products of thermal-neutron fission of 235U have been made at nine selected times 14, 12, 1, 2, 5, 10, 24, 48, and 72 hours after fission. A calibrated and highly collimated 5 in. x 5 in. NaIT1 detector was used. The 100-energy-bin gamma-ray spectra were unfolded from the pulse-height distributions by means of an iterative method. Extensive use was made of machine computation. The number of fissions in each sample was determined radiochemically.
- Radioactivity, Radioactive Wastes and Fission Products