Why is it important that radioisotopes used as diagnostic tools in nuclear medicine produce gamma radiation when they decay? Why are alpha emitters not used as diagnostic tools?
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- Explain how the type of decay, the half life and the chemical properties make the following radionuclides suitable for the given applications: A single gram of polonium will reach a temperature of 500°C making it useful as a source of heat for space equipment (α emitter, half lives of polonium isotopes range from less than a second to 200 years).430 rads of αα-particle radiation is equivalent to how many rads of X-rays in terms of biological damage?Assume that you list the following types of electromagnetic radiation in order of increasing wavelength: () the gamma rays produced by a radioactive nuclide used in medical imaging: (ii) radiation from an FM radio station at 93.1 MHz on the dial; (iii) a radio signal from an AM radio station at 680 kHz on the dial; (iv) the yellow light from sodium vapor streetlights; (v) the red light of a light-emitting diode. Which one would be the second? Lütfen birini seçin: O a 680 kHz AM radio waves O b. the red light O c the yellow light O d. 93.1 MHz FM radio waves O e the gamma rays
- Write the nuclear equation for the positron decay of C-11.what are the biological effects of ionising radiationA 10.00 mg sample of technetium-93 (92.91024898 u) is used to heat 125.4 g of water from 23.4 degree C to 87.4 degree C. How many minutes will be required to heat the water if all of the energy generated from the decay is used to heat the water?
- what are the names of radiation process in the sequence of events along with the time it takes for each process to ocurr going from low linear energy transfer (LET) radaition exposure to bilogical effect?Explain why the fluorescence signal decreases as the concentration of TNT in the sample increases.What characteristic of uranium-235 fission causes a chain reaction?
- Approximately what amount (in Sv) of short-term exposure to radiation produces noticeable effects in humans?At which wavelength is UV radiation most germicidal? Explain.The decay of an isotope element follows a first-order reaction. Assuming that you start with 964 mg of the isotope element sample, after 39.4 hours of decay, you find that there is 275 mg of the sample remaining. What is the half-life time of this reaction?