In one embodiment, target material is brought into {HEAD ~ range} of the internal high gradient region by {TAIL ~ gravity} 
In one embodiment , target material is brought into { HEAD ~ range } of the internal high gradient region by { TAIL ~ gravity }
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL