Abstract
Measurements of the isotope shifts in the resonance line of Ba i of all of the stable isotopes of barium have been made by comparing the wavelengths of the lines, unresolved blends, emitted by enriched isotopes. The shifts relative to
138
B a are:
137
B a, 7*7 m K ;
136
Ba, 4*2 m K ;
135
Ba, 8-4 m K ;
134
B a, 4-6 m K ;
132
Ba, 7*4 m K ;
130
Ba, 7*8 m K . The shifts for
136
B a and
134
B a are in agreement to within 0* 1 m K with those found by Razumovski & Chaika (1962), but their values for 137B a and 135B a are respectively 2-0 and 0-8 m K lower than ours, possibly due to insufficient blending of the weakest hyperfine struct recomponent. The h.f.s. intervals of the terms 6
8
6
p
1
P
1
of the odd isotopes of
137
B a and
135
B a have been derived from the results of measurements of the structure of the line emitted by natural barium combined with values of the isotope shifts and the already know n ratios of the magnetic moment splitting factors,
A
, and the quadrupole moment coupling factors,
B
; approximate values are given of the factors
A
and
B
.
Cited by
11 articles.
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