A proton

$($charge $+$e$,$ mass mp$),$

a deuteron

$($charge $+$e$,$ mass $2$mp$),$

and an alpha particle

$($charge $+2$e$,$ mass $4$mp$)$

are accelerated from rest through a common potential difference $$V$.$ Each of the particles enters a uniform magnetic field

B$,$

with its velocity in a direction perpendicular to

B$.$

The proton moves in a circular path of radius

rp

$($charge $+$e$,$ mass mp$),$

a deuteron

$($charge $+$e$,$ mass $2$mp$),$

and an alpha particle

$($charge $+2$e$,$ mass $4$mp$)$

are accelerated from rest through a common potential difference $$V$.$ Each of the particles enters a uniform magnetic field

B$,$

with its velocity in a direction perpendicular to

B$.$

The proton moves in a circular path of radius

rp

$($charge $+$e$,$ mass mp$),$

a deuteron

$($charge $+$e$,$ mass $2$mp$),$

and an alpha particle

$($charge $+2$e$,$ mass $4$mp$)$

are accelerated from rest through a common potential difference $$V$.$ Each of the particles enters a uniform magnetic field

B$,$

with its velocity in a direction perpendicular to

B$.$

The proton moves in a circular path of radius

rp