Radial separation of 58Ni+ and 60Ni+ in a mass spectrometer

[Alex kevin]

Homework Statement

In a mass spectrometer, singly charged 58Ni+ (mass, m= 9.26 × 10-26 kg), and 60Ni+ (mass, m= 9.58 × 10-26 kg) ions pass through a velocity selector (with crossed electric and magnetic fields, E = 2 × 105 N/C and B=3000 G) and then enter a chamber of uniform magnetic field B = 0.12 T. Find the radial separation between the ions.
Attempt:
i couldn't even find the right formula

 

[SteamKing]

Homework Statement

In a mass spectrometer, singly charged 58Ni+ (mass, m= 9.26 × 10-26 kg), and 60Ni+ (mass, m= 9.58 × 10-26 kg) ions pass through a velocity selector (with crossed electric and magnetic fields, E = 2 × 105 N/C and B=3000 G) and then enter a chamber of uniform magnetic field B = 0.12 T. Find the radial separation between the ions.

Alex:
Please don't delete parts of the HW template. All three parts are mandatory, and you may not treat them as optional, particularly the third part, which is where you are supposed to show your work towards a solution.

According to PF Rules, if you don't show an attempted solution, you won't receive help.