Radioactivity Induced by Neutrons

Trabecular bone changes induced by fast neutrons versus gamma rays in mice

Background: The trabecular bone changes in the tibia of C3H/HeN mice were measured 12 weeks after whole body irradiation with various doses of fast neutrons (0-2.4 Gy) or 137Cs-generated gamma-rays (0-6 Gy). Materials and Methods: Serum calcium, phosphorus, estradiol concentration and alkaline phosphatase activity were measured. Tibiae were anal...

Experiments on Mutations Induced by Neutrons in Drosophila Melanogaster Sperms.

WO somewhat puzzling phenomena have been reported in the literature T on neutron-induced lethals in Drosophila. NAGAI and LOCHER (1938), in the first work on this subject, kept the offspring of different neutron-treated males separate during the tests for sex-linked lethals and reported that the lethals were not distributed a t random among the offspring of different males. Two or more lethals ...

Decay of protons and neutrons induced by acceleration

We investigate the decay of accelerated protons and neutrons. Calculations are carried out in the inertial and coaccelerated frames. Particle interpretation of these processes are quite different in each frame but the decay rates are verified to agree in both cases. For the sake of simplicity our calculations are performed in a two-dimensional spacetime since our conclusions are not conceptuall...

Measurement of residual 60Co activity induced by atomic-bomb neutrons in Nagasaki and background contribution by environmental neutrons.

Residual 60Co activity in five steel samples induced by neutrons from the Nagasaki atomic bomb has been measured within about 1000 m from the hypocenter. The chemical separation of cobalt and nickel from steel samples was performed, and cobalt-enriched samples were prepared for all samples. Gamma-ray measurements were carried out with a low-background well-type germanium detector. The gamma-ray...

Predicting Induced Radioactivity at High Energy Accelerators