[填空题]
A cyclotron with a rad(slh( m 4x24sox4ngc wwce57s ius of n- qm wg6+(slk1.0 m is to accelerate deuterons ($^2\text{H}$, mass $= 2.014$ u) to an energy of 12 MeV.
(a) What is the required magnetic field?$\approx $ T
(b) What frequency is needed for the voltage between the dees?$\simeq $ Hz
(c) If the potential difference between the dees averages 22 kV, how many revolutions will the particles make before exiting?$\approx$ $\ \text{revolutions}$
(d) How much time does it take for one deuteron to go from start to exit? $\Delta t$ = $ \times 10^{-6}\ \text{s}$
(e) Estimate how far it travels during this time. distance = m
