karlov-kirichenko-kvantovaya-mekhanika-2016 (810755), страница 19
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2 $ 5 )) )D"( ! ! . , ,1 )1D1 ( m " 05!# " ! .! ! !( 6"5 - " ,"!"#( ( .!4 ! 0!! " dλD # "#'5 !=− 2"5 AA AAN % .dω2π c'"#!! "( !(& % "-! ( 5IIEмагн = −μH H.AAIAμH = −μБ m,AAIIEмагн = μБ Hm,AAIK7! -! m 3 6" - " % " ! ! # ! " 1"(! ( 4 !!5* & - !( (ΔEмаг = μБ H =e2me cHII,- ..- 722) ?..-6- g!+& 522) ?!! !! - !!5 "-Δω =eH2me cAAI ,4 " & - !! =! ! "-& " .- & 2"& AAO < 04 -!4 2" "( - !!5MeHν== 1,4 · 106 H >6,AAIII ΔE (0) = E2 − E1 3 !( ( ! ! ! !. "( 7m2 − m1 = Δm = 0, ±1,-! ! 5& !"!-2-10-2-10+1+24π me c ! " 5 !*! 5 "-" 1" " 9# - " !5& ! 1"(! ( 2l+1 ! !(1* ! !! !2l + 1 '5 !6( ! ! 9 ("( ! 1!# ( !"# ! !5," ! - D # !4! " !0 0 .!5 51& " ,"( 0 ! ! 5 55< ! (1 6 ! "- ! .( "5& ! j '! (MΔj = 0, ±1,Δmj = 0, ±1;Δl = 0, ±1,Δml = 0, ±1;+1+2AAI2 ' 0 )4, )1) ,) ,- 1 /)%'1( # !# 22! D 5 -! ! .!5* & AAIK .5* '5 *5 .
( ( " Δm = ±1 7 !*5 " AAI '5* "(* "! '%.!5* '5 *5 !5 ( ."1 '"-5 !- ( ! !"(41 1"5* " & D # 0!! " !0 Δm = 0, ±1 ! ("4 !"!7 * AA '!"#5 " '54! 1".5 !- !( !5 !!.!! *& !- & " 9- "(* '54! 1".( !- * & 62 !-5 '-( m ?!"'54! ';5 *5 %"- - "( * !" "5* <! !! !41 .*5 4! ( '"- & !& - !!5 "-0 !! " !" "5 !"# ' " "9 0' "-! ( !& !"! " 0"!=! * ";# ""4 !6( C " 5 '; ;*(1)(2)& E1 + Eмаг E2 + Eмаг 5- " ' !# & !& -!! " " !0 '4! ! " Δm = +1 3 - !! "-! (Δm = 0 3 - !! (! (Δm = −1 3 - !! #;! (< 0"4 "# ! "( !5 !! !41 ".( Δm = ±1 4! 6 ! "- ! ( ." ( 5 ±1 =! ! -! 5 ! "# "(! -! " ( 2! ! " "( D.-! 5 ' ! 2!5 !! !4! 6"( "('. ! ,"( 1& !5 Δm = 0 ! !! !.41& 2! " !# 64 ! # ! " 4 "4 7 " 5 ! "# "( ! "( 6( " !# "( 6( " ( '.' - !! ! !* 6& 05! ! "( Δm = 0 ! "# "( < 0"4 "( " !5 "# "( 05" 6."( "('5 ! ( "('5 "& 7 1.( ! 0"4! ( ! '! * Δm = 0 0!!!"# " ( 2! 9 "( 0"4.
"( 0"4 "# ! 5 *!-!05 ! 05" " 5 "5 "('!# "&"# "(Δs = 0.ω = ΔE = ΔE (0) +eH2me c(m2 − m1 ),AAI,- ..- 722) ?..-6- g!+& 522) ?' .# & 6."5& "# 6 ! !! !& 6 "# " ! ( -! 1" "#!"! 3 !.( !!IIN% 51 2 5 " "# 22! D/ 1& "# 22! ! 1"( 3 !"! '* σ .! & π .!5 3 0"4! ( / *!.'! !"# !5 !"#5 " ! '55 "(5" % 0"#; ! !"#5 " "5 !"(4!0& "#!"!5 , "( ! "#!"! 3 ' ! ".! 0"! !( 3 '& ! ! "( ! -# "4! ,0"! 1"(! ( " ! 0' -! "( D2 ! ! "( D1 3 !5 !# ' * ("(! ( π .! - !# 3 σ .! ,"(* 1" 0"#; "( * #; - "# 1.eH" ! " ' !5 ' 0" "5 "-μμl2me c?" !# !5 ! "# '.22! "-&5 0.' (' "5 *! " ! ! ! ; "()5 ' -! "#!"! !# ! 0J( (! ( "( 9- ! "! !! ! ' "#5& 22! DD # '" # 1 !5 ! 0 !(!"# ! -! !!; "( ! #; ! !.;( "( 0!"# !M "( 0!"# ! 5 µl = − "( e2me cµs = −eme cl,AAINs.AAIOC " 05 ! 05" ! ! "5& !5& ! µ = µl + µs05" 05 """ " *- ! j = l + s /"5 µ ! " 6 " 05 ! "( "( !! ! " ! ! !.( 9 ! !"- -! " # 05 ! -!- " '5* !6 (" # 05 2l + 1 i 2j + 1 5&'15& ! 1" ( 05 2j + 1 !5* &7 " !0 "- 1"( '" # 05 ! !" ( 05 !! !41 "# 22! D7 " " " ! ! µ .! " " *- ! 7 ! "('"#5* ! "( !5* '"-5 AAN) ;!0 '" ! !# ! µl " - 9 ! ;!0 ! µs 0! -! " ' AAN -! " " *- ! ! µ -% !! ! 5 " ! 3 " " ! 35 "5 -!!# -! ! ! ( ! !( .
14! ( "( ! <! "40& !IIOμμjlsμs2 # % 4 ?80 ,11 )11)),"( 6 "5* 4 6 & !!-'!# ";# "-5 % ; ! "! ! 0( ! " 05 " !5& ! µвремя ? ! µ 6 µ # 1( <! "0 ! " - "0 5 5( ' !0"! 22!5 !5 ! µj "5 "# 9# 5 !!# ! ( !5 05" 5 ! "' "# '.22!/0"( *- !5 ! ! 6 ! "( ! "( %! ! ! !.!# ( !;4 "4 2j + 1 0 ( !6( *.!'! ( !& m ! " "( ! 6&! " "( & !6 !! !! .mm!( ( −µ|| H = −μ|| H !;! 5 " jj" "( ! µ|| ) <! '15&! 1"(! ( 2j + 1 & ! !(1* ! ".1- µ|| H j,- ..- 722) ?..-6- g!+& 522) ?9 0' !- 1" "(! & 22.!5& !5& ! ! !5& 01 "- .e'4 ! @ "5& *- & ! j '.9 1" * ! '"- "-! ( '5* "& + (!# -! "( & A I - !!5* " ! ( 2"& ! ! !"#5* !5* - " - ! ! ! " '541*" ! ;& " =!! 22!5& ! ' !# eµ|| = −Kj = −K μБ j,AAKBAAKIIKB2me c2me c ' − -!5! !6!"#5& ' '( "! −e .!"# K 5! !"- ; ! "-( ! "#'.22! )!"# K '5! ( 05- K.2! " 2!.
1"( +ZY 9 "!"#( ( Eмаг = −K μБ Hm = −K ωL m, ωL =eH2me cAAKA3 " - ( " ( - !! /! 4 "!-! '15& ! 3 *5& # 3 *!( 1."(! ( 2j + 1 ! !(1* & "- 1"("(! ( K.2! !"(! K hνL Δν = νL (K2 m2 − K1 m1 ).9 "( m2 = 0 m1 = 0, ±1 1"( ! ( 5-2+1+2Δν = K2 νL ,Δν = (K2 − K1 )νL ,D; "-5 *(1 AAKK μl = −Kl μБ l,0+1+2+32 0 )4, )1) ,) ,- )1 /)μs = −Ks μБ s,AAK !" K l K s '54! ( !! ! 0!"#5 .5 K.2! / *!'4! ! !; "( .0!"# "5* .e! %"- μБ = !# 05-.2me c ! @ 5 ' "("!Kl = 1, Ks = 2.j-1AAKKμ|| = μl cos (l, j) + μs cos (s, j).jl(l, j)AAKK = K l l cos (l, j) + K s s cos (s, j).-2Δν = (K2 − 2K1 )νL ! ! 1" "& "# '.22! 1 !' ! ! 2! + "( * !(& 7&! '.-( K.2! 1#4 !& " AAN' AAN " !# -!)5 0 !# 01 "#'( ( '-.& AAK ? -! AAK AAKK ('5 K.2! 5.! ( -3Δν = K1 νL ,"( m2 = 1 !! !μ|| = −K μБ j,0-1Δν = −K1 νL ,Δν = 0,νL = ωL /2π.8! + '"- "( '"-5* ! ! 0J( (! "-0"#; - " "& * ( "# 22!G 1"(41 ( " 0'4! "6 & !"! 4!0"#; - " ! !! ! ! -! ' ! "(* "(5* ! " !0 Δm = 0, ±1 5 ! 05" "# 22! =! "( ( (!* AAO 0( & AAIKA(s , j )s2 .
7 4=1 )) )) :) @.B /A @0B /A =+-? ,1 )4, D,?8) )jAAK?"5 (l, j) (s, j) 0'-4! "5 !! !41 !. ' 5 "( "( ! AAAB ! *cos (l, j) =j 2 + l2 − s22jl,cos (s, j) =j 2 + s2 − l22js.AAK,- ..- 722) ?IKI..-6- g!+& 522) ?9 2! +K = Kl j2+ l2 − s22j 2+ Ksj 2 + s2 − l22j 2? '-( ! *(1 "44 2" 5- "(.4! ( * '"& " -!5( ('# AA A *AAKN.)5 " " - & 5 < 6 !! !( 0"#.;* !5* - "* '"#!! " 05!# "( !& *.!05 "-!# !*- & '"#!! 5 "5 4'!#2j → j(j + 1),2l → l(l + 1),2s → s(s + 1).l+2s+l−2sl(l + 1) − s(s + 1)j(j + 1)=32+s(s + 1) − l(l + 1)2j(j + 1).AAKOG'"#!!5 -! 2" AAKO AAKI 4! !7; 5 2"5 AAKO " ( "(5 " - .!"( F ! ! ! 0" !5& !*.- & 5 *! ( !# " 05-5 "- !< ! ! ! ! µ̂ = µ̂l + µ̂s = −μБ (Kl l̂ + Ks ŝ).AA B< ! ! " " ! ĵ = l̂ + ŝ.AA A? !"(414 ! µ̂ """#4 ĵ '; µ̂|| = −K μБ ĵ.AA I? & !5 !( ! AA B ĵ "-µ̂ ĵ = −μБ [Kl (ĵ l̂) + Ks (ĵ ŝ)].AA K=! "- " AA I µ̂|| ĵ = −K μБ ĵ2 .1j l = [j(j + 1) + l(l + 1) − s(s + 1)],21j s = [j(j + 1) + s(s + 1) − l(l + 1)],' 2( 2j = j(j + 1).AA <'( AA K AA ( '"#!!5"-' (AA Kl j l + Ks j s = K j2 .AA < ! !* 5& AA !K=,"( "! -! AAK "-K=IKKl+2s+l−2sl(l + 1) − s(s + 1)j(j + 1),AA -! ! ! ! "-& 5; 2"& AAKO< " ! 5 " 1 ! "# 22! .! 0 !! " "#5 22!% " ! -! 5 2! + 5 "" .! " "5 "5* "(* !5 0"( .0!"# '& !4 ('54! ( 5& ! !5& 6" 6 ! "5* "& ! "( =! .'! "4 ! )5 & !M " ! "" # ! ('" ( !5& ! !! ! !!# # '! # ! !# '5 .6 " ! "( % # ! !! ( ! .! !! ( !5& !e ! 1 !4 "# !6( " ! ! # % ! " ( '& !( ! " !# −µэф H7 " " -# "# ! ( '& !( ! ( !- !MU = ULH + USH + ULS .D # ULH = −µl H 3 '& ! "( 0!"#5 !5! USH = −µs H 3 '& ! "( 5 ! ULS 3 .0!"# '& !C " " H " ! " -" 0-# 5" LS .
('# ! ( % ! "- 0"4! ( * ! ""# 22! D ! "# , ("'54! 22! <; : @ % "# ! " 0!"#.5& & !5 ' ! 6 4! "( H AAAA <"( ( '& !( "Eмаг = μБ H[l cos (l, H) + 2s cos (s, H)].AA N< !# ml 3 6"- "( 6( " "(C " - !# -! ! !!# ( !"# """# "IK,- ..- 722) ?..-9- 7($) ( (/!"""# "4 ! ms = ±1/2) ! 5 "- ' AA NEмаг = μБ H(ml + 2ms ),ms = ±1/2,AA O-! ! "#5& 22! D Δms = 0)! " "-( ! " 5 ! * !"# '.22! "# <*4 0" !# !."(! 0" !# 22! <; : @ F " !# !" !-!"9# "# " "05*H"(*H)5 " -! 1! ! " " 1."(4! ( ! G'5 .σs6 ! 0!4! '44 ! 0! (!#.mll( * 0 - "0"4L," ! -! !! !!; " !& ' "4- .
4! -4 ;M2 +) 5=1 1 ))D ,1 )11 @,- 1 AΔEΔt = 2π,AAB Δt 3 ( ' ! '0. !( C " " "0 !( ( 5;! ;5 * '5!( ! -!!# -! *! 5"( -!* 6& ! ! 5" "5* 6& ! *! !"# !. " !!- " "( ! -!05 !" .5!# (* (84 3 7 ! .! .8. < ! ( ! & * "( ! !( "-(* "0 "# !5* "& ' ! ! !( !( ! "!4!!AAAhiM 1s2 2s2 2p6 3s1 .< '0 !( !-! * ! "!. "! Kp.0"- ! -! '0 !( !#hi∗: 1s2 2s2 2p6 3p1 .AAIIKD; !5 '0 !(& 7 -!!5 0'-4! ( " 2S+1 LJ L S J 3 !! !0!"#5& ! "5& "& ! ! ,"( *.( ! -! -! !( ! 0* "-(* "(! ( !5 "! % "- !(( AAA l = 0, s = 1/2 ⇒ j = l + s = 1/2, "- '0 !(( 4! ( ' !Ml − s = 1/2,l = 1, s = 1/2 ⇒ j =l + s = 3/2.AAKAA ?!! ! ! !(( !# 2 S1/2 !5 '0.5* !(& 3 2 P1/2 2 P3/2 < ! " E ' !* !(& ! #;4 4 - ! 9 0' ! !.! ! "( 4! ( *52P1/2 → 2 S1/22P3/2 → 2 S1/2 .AA=! &( "!( "( !( !& " # " N 0 (!( G ! -" "-& "0 ! "( "!"#" 22! D < "4- ! "( 5& '& 1"(! ( - " !5* 2J + 1 !' AAAIM '; '0 !(( 3 H=02P3/2g = 4/3H =0mj+3/2+1/2-1/2-3/22P1/2D22S 1/2g = 2/3+1/2-1/2D1g =2+1/2-1/22 0 )4, ,) 1 +=,41 )) /),- ..- 722) ?IK ( * '0 !( 3 -!5 .!!5* (< * !5* * "! !# -! "!0 "- !5MΔJ = ±1, ΔL = ±1, ΔS = 0.AA%! ' !* " '-! -! '5 *5 '.05 !(( 2 P3/2 → 2 P1/2 !( * * .- ! ' AAAI <" !0 ΔmJ = 0, ±1 ."!(4! AB * !5 0'4! 0"45& !'"-( "# 22! D< !# !# ! " "# ! "'! ( !& 22!D % ! "- - " & ! *! 1." *5* & P S ! " "(! ( " AA O "-& ml + 2ms MAAE = E0 + μБ H(ml + 2ms ), !"(! "- !(( ml = 0, ms = −1/2,+1/2) (!# "- '0 !(( ml = −1, 0, +1, ms == −1/2, +1/2) ?!! !41( * * ' AAAK< " !5* * "! !!# ( ." ΔmS = 0 Δ(mL + 2mS ) = 0, ±1 % ! !4! ( !H=0H =02P3/22P1/22S 1/2ΔmL = +1ΔmL = 0_ΔmL = 1mLmSmL+2m S+1+1/2+20+1/2_+1/2+1_+10−1/2−1−1−1/2−20+1/2+10−1/2−1 ;=!) J ) *J ) J *)CJ ))& ( ] ::+& <@4- [K8 * 1 /,A -& ; (#)#G ! ( E2 > E1 !5 ';65& * - !!ω21 =E2 − E1AIA,"(& " ! ; "- - !# 2' ' *( ) !- !(( E2 E1 01 ( '.5 '"-!"#5 ! 65 ! 0'5'"-!"#5*5 / !"(( ! " ! 0! ( 65* ! * -5& ! !5* ! ( '"-4"14 2! AIA02 28 , 0 )) /)'"-5 " !-41 ! '"-5 * -!5 ! & 5 !-4! & *E2A21B21B 12ÑïîíòàííûéïåðåõîäÈíäóöèðîâàííûåïåðåõîäûE12 : ,5 0< "! !# 1 ! '"#.
( '"-( !5 *(1 ( * !- !( E2 ) ! ;!# !5 *5 !(. E1 ) =! *5 '"#5 * (! !# ' ! !,- .0- Q:+ +C + :(# +- @*+ :(K+.0-.- 522K+ 7&8&;* '& !& ! - " 65* "4-( ' 5";# 05 ';" ! " !! & ?! '"# '"- ("(! ( 22! .!5 % " - & * ! !0"# !( 0"41& 0"#;& !;4 ! !&-. !(( ! ! ! ;* '1& ! !# 0 -" % !& 0" ! ! ! !0"# !( ! ! ( !& !"-& ! "( & !#4< "4 (! !# ! * - !65 ' *. !(( E2 → E1 ) 6"# D ( dt! (! !# !"(! ! B12 B21 3 "-5 '55 226! =&;!& "(6 "1( '"-( !! ! ( . A I '5! " *< ! "! ( ! - !!5 ; "( 0 !.& - !! * E1 ↔ E2 !"! ( -! !5 "!.! "( '"-5 65* ** * '" !#4 ! !5 ! "( 5'541 ! *5 =!'-! -! ; "!! " " ' .65* ** 4! 5 - !! 2' "('64 " !( / '"-5D! -! '"- !# "( ! ! !# 2! !." ! !- !"41 ! - '-.& ("(! ( 2!"#& & !& & "'* 3 !( "!?1 ! 65* * (!# . !"& " - & "! % " !# ! ( ! "!! " - !!& ω 9 & ! - & 541& "5 '(5 -! ;!#"0( !& - !!& 0"#; "! !# "( ! "# -4! ( '(5 ! ! "1! ( .( "( < "# "! "0& '( a 6"# ."! "( E ( '( 6"# a2 ∼ E 2 ! ! '-! -! (! !# 6 "1( 6"#"! ! "( ρ % ! "41 0'6* " E 50'- ( !# "!- "( "!!& "5/0! '"#!! 55* "0& '(5 -! '"-!# - !! "( ω % '"#!! 0! '!# !- 6.
! '"- 0"#; "! "0& '( a! ! * '"-M Iизл ∼ a2 ∼ E 2 ?"!"# !. !# 6 '"-( ! 6"# "! ! 41 ( "(=! 0( " - & "! '."(4! - ! (!# - ! ! ! * 6. '"-( "# * !- '"-( 0"4!! & !& - !!&G !( 0"# !5* - !6 *(1* ( ! !! !! T "( "( ( ! 0"( " 0 ! '"-( "1 ** ( !"(41* 0"# - !6 =&;!& !." ('# 226!MIKN(спон)dW21= A21 d t,AII "- A21 '5! ( 226! =&;!& "( !. '"-( 9 0' !"! ( -! (! !# !'"-( 6 " -! ! !# ! !( "4 !! !41 226.! =&;!& A21 M(спон)w21(спон)=dW21dt= A21 .AIK?! '"- 5! 6'"# *. - !65 ' * !(( ?'"#5* *' * 05! D " * ( !6 0'5'."-!"#5 6 5 1 !5 ! *!# !"# !"1( 2! - !!5 AIA C ! ! " 26!# . *(1 ! *5 ' !- !(( * *5 65 ; "!!5 ." ' & - !!5 9( !"( '"(! !!#' "1 '"-( '"#!! 65* ." * ' * 7 " ! 6!# *5 .* '% AOA. =&;!& !( 6 5 ( ."1( '"-( !"( 2!* "" -!( 65 "1 1 !! (" 6.