Why is the AES uses dN/dE plot instead of N(E) directly?
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- Calculate the wavelength of a 0.652 MeV Gamma RayIf a pregnant woman should be exposed to no more than 20.0 rad, and a radiation source gives 38.0 rad at 193 cm, what is the minimum distance she should stand from the radiation source?A D-T pellet is heated by intense laser beams with wavelength of 2 μm. (1) Find the D-T plasma density at which the parametric decay instability (PDI) can occur. (2) Explain how the PDI-generated hot electrons can change ion damping.
- If 2.50 pCi [1 pCi (picocurie) 1X10⁻¹²Ci] of radioac-tivity from ²³⁹Pu is emitted in a 95-kg human for 65 h, and eachdisintegration has an energy of 8.25X10⁻¹³ J, how many graysdoes the person receive?Since the atmosphere shields us from the cosmic rays, the higher we go in our atmosphere, the more radiation we are subject to. Therefore the amount of instantaneous radiation is larger when travelling on an airplane, compared to staying on the Earth's ground. For example, a long-distance airplane flying at cruising altitude exposes each passanger to an extra dose of radiation of about 5 μµSv per hour. Now, assume that, for anyone who is not taking any flights, the natural background exposure in a year is 3 mSv, and assume also that there are no other significant sources of radiation. Part A After how many hours of flying would a person double her or his yearly radiation dose? Express your answer in hours. ΨΕΙ ΑΣΦ t = Submit Request Answer ? hCompare the wavelength of 1.0-MeV gamma-ray photon with that of a neutron having the same kinetic energy. (for a neutron, mc² = 939 MeV)