A Van de Graaff generator  produces a beam of 2.00-MeV deuterons, which are heavy hydrogen nuclei containing a proton and a neutron. (a) If the beam current is 10.0 μA, what is the average separation of the deuterons? (b) Is the electrical force of repulsion among them a significant factor in beam stability? Explain.

Protons enter a region of electric field where the potential difference between where the protons enter and exit is +5×106 volts (5 MV). Assuming the initial energy of the protons was negligible, how much energy does the proton gain? What if we had a fully ionized carbon-12 nucleus instead?

Tungsten has a linear attenuation coefficient of 30.5/cm for gamma rays with 150 keV of energy. If an unshielded Tc-99m syringe has a radiation exposure rate (I(0)) of 34 mR/hr, what will be the exposure rate if a 0.25-cm tungsten shield is placed around it? Using the calculation above, how much (what percent) is transmitted through the shield? What percent is attenuated?

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 ? h

A typical operating voltage for a Geiger counter is about O 5000 v O 500 v O 5 v O 50 v

A deuteron is accelerated from rest through a 5-kV potential difference and then moves perpendicularly to a uniform magnetic field with B = 1.2 T. What is the radius of the resulting circular path? (deuteron: m = 3.3 x 10-27kg, q = 1.6 x 10-19C)

Alpha particles with energy 4.25 MeV interact with gas molecules in ion – chamber and produced 300 particles /second. If the particles lose all its energy in the ion – chamber, the ionization energy is 35 eV, what is the current produced by these particles? Find the resistance that must be connected in series with the ion chamber for the voltage difference to be 0.1 and 1 V?