III. In a neutron plus gamma-ray radiation field, a TE ionization chamber registers a dose-rate of 5 mGy/day and a chamber absent of hydrogen registers a dose-rate of 1 mGy/day. a) What are the gamma and neutron dose-rates for 0.5-MeV neutrons? b) For 5-MeV neutrons? c) Discuss this problem if the second detector could be replaced with a sensitive material made-up of pure hydrogen? Assume the relative response of neutrons of 0.5 MeV to gamma-rays is 0.1 and for 5 MeV neutrons to gamma-rays is 0.25. ATE=3.1 x 10-7 C/Gy(tissue) for gamma-ray calibration of the ion chamber, and ATLD=6 x 105 C/Gy(tissue).
Radioactive decay
The emission of energy to produce ionizing radiation is known as radioactive decay. Alpha, beta particles, and gamma rays are examples of ionizing radiation that could be released. Radioactive decay happens in radionuclides, which are imbalanced atoms. This periodic table's elements come in a variety of shapes and sizes. Several of these kinds are stable like nitrogen-14, hydrogen-2, and potassium-40, whereas others are not like uranium-238. In nature, one of the most stable phases of an element is usually the most prevalent. Every element, meanwhile, has an unstable state. Unstable variants are radioactive and release ionizing radiation. Certain elements, including uranium, have no stable forms and are constantly radioactive. Radionuclides are elements that release ionizing radiation.
Artificial Radioactivity
The radioactivity can be simply referred to as particle emission from nuclei due to the nuclear instability. There are different types of radiation such as alpha, beta and gamma radiation. Along with these there are different types of decay as well.
Step by step
Solved in 2 steps with 4 images
