212
T
TUT Titre?
I
y
PoE ity
T
T
TU
ITil
T
TTT
iiit
4
~~ T
—
F (K)
2.0
0.01
Lot Lttiit!
Lot patel
1.0
0.1
id
100
Fic. 164.—Atomic form factors of H~, He, and Lit [see Eq. (1) of the text] versus the square of momentum transfer in atomic
units.
T
TTT TTT
T
T7T TTT]
TOT tit
TO
T_T
TTTTT
).Or—
SL
4
£
wn
4
w
_
H™
—
He
0.5--
_|
=
O
0.0}
Lit
!
‘
:
0.1
Tol
1.0
L
Loa
tidal
10
+
l
Fe
ee
100
(Kao)*
Fic. 165.—Incoherent scattering functions of H-, He, and Lit (see Eq. (2) of the text] versus the square of momentum transfer
in atomic units.
computed from a 3-term Hylleraas wave function by
shen.“” The integrals for Li* in Table 76 have been used
Hurst” are in good agreement with those in Table 75,
in the determination of total inelastic-secattering cross
values of Sine(K) for Li* calculated by Freeman”are
larger than those in Table 75 by ~5% in the region
5 < (Ka)" < 50, but agree reasonably well for
(Kay)’ < 5. In He, we found that a larger deviation is
Figures 164 and 165, respectively. As is clear from
confirming the expectation that the electron correlation
is less important in the evaluation of F(K).” The
found toward smaller K. Freeman“” used a simple
self-consistent-field wave function by Fock and Petra-
section reported elsewhere.”
The functions F(A) and Sine(K) are plotted in
Figure 165, Sino(K) for H” is large, resulting in a large
inelastic scattering cross section [see Eq. (6) of Reference 1], and vise versa for Li*. The figures show that
H has a “soft” and Li” a “hard” electronic structure
compared to that of He.
4.