Фотоэлектронная спектроскопия. Домашевская Э.П. - 37 стр.

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ВГУ | Воронеж

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37
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\hafh`gufbhjb_glZpbyfbkibgZ\Ze_glguowe_dljhgh\Ω
–h[t_fahgu
;jxeexwgZ
?keb \ nhjfme_  i_j_clb hl ^_dZjlh\hc kbkl_fu dhhj^bgZl d
kbkl_f_ \ dhlhjhc dhhj^bgZlgu_ ih\_joghklb kh\iZ^Zxl k
bahwg_j]_lbq_kdbfb lh ihemqbf gZb[he__ jZkijhkljZg_ggh_ \ujZ`_gb_
^eyn(E):
()
()
∑
∫
=
∇
=
p
E)k(
pk
3
o
o
p
E
kE
ds
)2(
2
)E(n
&
π
Ω
,
\dhlhjhfbgl_]jbjh\Zgb_ijhba\h^blkyihbahwg_j]_lbq_kdhcih\_joghklb
(
)
op
EkE
=
&
ahgu;jbeexwgZ
Ihkdhevdm\agZf_gZl_e_ih^agZdhfbgl_]jZeZ\ujZ`_gbyklhbl
]jZ^b_gl
)k(E
pk
&
∇  lh \k_ hkh[_gghklb ahgghc kljmdlmju
)k(E
&
gZc^ml
hljZ`_gb_ gZ djb\hc
n
? jZkij_^_e_gby iehlghklb khklhygbc \ \b^_
hkh[_gghkl_c<Zg-Oh\Z<dZq_kl\_deZkkbq_kdh]hijbf_jZbkihevah\Zgby
f_lh^Z JNWK ^ey bkke_^h\Zgby jZkij_^_e_gby iehlghklb khklhygbc \
\Ze_glghc ahg_<A gZ jbk ijb\_^_g JNWK <A djbklZeebq_kdh]h
dj_fgbyk-Sikh\f_klghkl_hj_lbq_kdbjZkkqblZggufbahgghckljmdlmjhcb
iehlghklvx khklhygbc KhihklZ\e_gb_
wdki_jbf_glZevguo^Zgguok
(7.4.)
Jbk
ZAhggZykl jmdlmjZE(k),
[iehlghklvkhklhygbcn(E),
\j_gl]_ghnhlhwe_dljhgguc
ki_dlj \Ze_glghcahgu
]j_gl]_gh\kdb_wfbkkbhggu_
ki_dljudjbklZeebq_kdh]h
dj_fgbyk-Si. 
                                                                                                  37


]^_kmffbjh\Zgb_\_^_lkyih\k_fjahgZfbfgh`bl_evh[mkeh\e_g^\mfy
\hafh`gufbhjb_glZpbyfbkibgZ\Ze_glguowe_dljhgh\Ω; –h[t_fahgu
;jxeexwgZ
      ?keb \ nhjfme_   i_j_clb hl ^_dZjlh\hc kbkl_fu dhhj^bgZl d
kbkl_f_   \   dhlhjhc        dhhj^bgZlgu_             ih\_joghklb           kh\iZ^Zxl      k
bahwg_j]_lbq_kdbfb lh ihemqbf gZb[he__ jZkijhkljZg_ggh_ \ujZ`_gb_
^eyn(E):

                               (2Ω o )
                    n( E ) =
                                     ( 2π )   3   ∑ ∫      &
                                                                      ds          & ,
                                                                                 ()
                                                                           ∇k E p k
                                                                                         (7.4.)
                                                      E p ( k )= Eo
                                                  p


\dhlhjhfbgl_]jbjh\Zgb_ijhba\h^blkyihbahwg_j]_lbq_kdhcih\_joghklb
    &
   ()
E p k = E o ahgu;jbeexwgZ

     Ihkdhevdm\agZf_gZl_e_ih^agZdhfbgl_]jZeZ\ujZ`_gby  klhbl
                    &                                                  &
]jZ^b_gl ∇ k E p ( k )  lh \k_ hkh[_gghklb ahgghc kljmdlmju E( k )  gZc^ml

hljZ`_gb_ gZ djb\hc n ?  jZkij_^_e_gby iehlghklb khklhygbc \ \b^_
hkh[_gghkl_c

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