Physics · Modern Physics

Cyclotrons are used to accelerate ions like deuterons (d) and α-particles. Keeping the uniform magnetic field the same for both, d and α are extracted with kinetic energies of 10 MeV and 20 MeV at extraction radii rd and rα, respectively. Taking the masses as Md = 2000 MeV/c2 and Mα = 4000 MeV/c2, the ratio rαrd is:

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1√2
212
32✓
41

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