Download Free Delayed Beta And Gamma Ray Production Due To Thermal Neutron Fission Of 235u Spectral Distributions For Times After Fission Between 2 And 14000 Sec Book in PDF and EPUB Free Download. You can read online Delayed Beta And Gamma Ray Production Due To Thermal Neutron Fission Of 235u Spectral Distributions For Times After Fission Between 2 And 14000 Sec and write the review.

Fission-product decay energy-release rates were measured for thermal-neutron fission of /sup 235/U. Samples of mass 1 to 10 .mu.g were irradiated for 1 to 100 s by using the fast pneumatic-tube facility at the Oak Ridge Research Reactor. The resulting beta- and gamma-ray emissions were counted for times-after-fission between 2 and 14,000 s. The data were obtained for beta and gamma rays separately as spectral distributions, N(E/sub .gamma./) vs E/sub .gamma./ and N(E/sub .beta./) vs E/sub .beta./. For the gamma-ray data the spectra were obtained with a NaI detector, while for the beta-ray data the spectra were obtained by using an NE-110 detector with an anticoincidence mantle. The raw data were unfolded to provide spectral distributions of moderate resolution. These distributions are given in graphical and tabular form as differential cross-section values of d sigma/dE/fission for gamma-ray energy intervals ranging from 10 keV for E/sub .gamma./ less than 0.18 MeV to 100 keV for E/sub .gamma./ greater than 6.8 MeV, and beta-ray energy intervals ranging from 20 keV for E/sub .beta./ less than 0.25 MeV to 160 keV for E/sub .beta./ greater than 6.4 MeV. Counting-time intervals range from 1 s for times-after-fission (t/sub w/) less than 6 s to 4000 s for t/sub w/ equals 10/sup 4/ s. The graphical representations also include calculated spectra using summation methods and the ENDF/B-IV fission yield and decay scheme data base. 92 figures, 87 tables.
Includes indexes.