【正文】
小 大 小 BqmrL?? ?帶電粒子在非均勻磁場(chǎng)中的運(yùn)動(dòng) 0r?r?yzxBcr?0000)()()()()(:))((21)]()[()()(000000rcrrrBrrBBrrBBrrrrBrrrBrB?????????????????????????????????????????????!BBrc ????])()([)()]([ 00 rc BrrBtvqrBvqdt vdm ?????????????????)()()()( ||tvc o n s tvvtvtvtvDBDB??????????????帶電粒子在非均勻磁場(chǎng)中的運(yùn)動(dòng) yeyByB ?????? B))(,0,0(ByzB ,因此軸方向有梯度,即軸,在在設(shè)磁場(chǎng)0000)()()()()()(])()([])()([])()([)(000||0||rcDBrcDBrcDBrcDBBrvqBrtvqrBvqrBtvqBrrBvtvtvqBrrBtvqdtvdmdtvdmdtvdmdtvdm??????????????????????????????????????????????????????????????0r?r?yzxBcr?)()()()( ||tvc o n s tvvtvtvtvDBDB??????????????=0 二階小量 抵消 抵消 =0 =0 帶電粒子在非均勻磁場(chǎng)中的運(yùn)動(dòng) 0)()()( 00 ?????? ? rcDB BrtvqrBvq ???????0)()()( 0 rcDB BrtvrBv ??????? ??????)()()()()( 000 0 rBBrtvrBrBv rcDB ?????????? ? ??????? ?)(/)()()( 0200 rBrBBrtvv rcDB ??????? ? ????? ?)0,s i n,( c o s),0,c o s,s i n(ttvvtvtvrccccccc??????????????)(/)()()( 0200 rBrBBrtvv rcDB ??????? ? ????? ?xBOq?vtc? y帶電粒子在非均勻磁場(chǎng)中的運(yùn)動(dòng) )(/)()]()c o ss i n[(s i nc o s 0200 rBrBBeyetvetvetetv ryyccxccycxc????????? ? ???????? ??? ?????? )()(/)()c o s(s i nc o s 0200 rBrBeyBtvetetv zrccycxc?????? ?????? ?? ???? )()(/)()c o ss i