Your research director has assigned you to set up the lab\'s mass spectrometer s
ID: 2003667 • Letter: Y
Question
Your research director has assigned you to set up the lab's mass spectrometer so that it will separate strontium ions having a net charge of +2e from a beam of mixed ions. The spectrometer above accelerates a beam of ions from rest through a potential difference t. after which the beam enters a region containing a uniform magnetic field B of constant magnitude and perpendicular to the plane of the path of the ions. The ions leave the spectrometer at a distance x from the entrance point. You can manually change epsilon. In what direction must B point to produce the trajectory of the ions shown?_ The ions travel at constant speed around a semicircular path. Explain why the speed remains constant. Calculate the speed of the ions with charge +2e that exit at distance x. Calculate the accelerating voltage epsilon needed for the ions with charge +2e to attain the speed you calculated in part (c).Explanation / Answer
a)
q.(vxB) must provide inward centripetal force
according to right hand rule B goes perpendicular to velocity and force
b)
magnetic force is centripetal force perpendicular to v.so it does not speed up and slow down
c)
magnetic force equals to centripetal force
q.(vxB)=mv2/r
r=radius of curvature
d)
chargexvoltge=energy=0.5mv2
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.