BaO

Barium Oxide

Parameter 138Ba16O Ref.
Y01 [MHz] 9371.97059(22) 92011
Y11 [MHz] -41.75169(51)
Y21 [MHz] -0.1235(27)
Y31 [kHz] -0.27(37)
Y02 [kHz] -8.167751(21)
Y12 [MHz] -0.527(57) x 10-6
Y22 [MHz] -0.246(38) x 10-6
Y32 [MHz] -0.159(63) x 10-7
Y03 [MHz] 0.27515(14) x 10-8
Y13 [MHz] -0.1475(30) x 10-9
Y04 [MHz] -0.4344(9) x 10-14
Y14 [MHz] 0.114(27) x 10-15
Y05 [MHz] -0.965(21) x 10-20
Y06 [MHz] 0.36(12) x 10-26
eQq0(137Ba) [MHz] -16.470(26)
eQq0(135Ba ) [MHz] -10.677(26)
Y10 [cm-1] 669.73327(74)
Y20 [cm-1] -2.01844(54)
Y30 [cm-1] -0.004259(143)
Y40 [cm-1] -0.383(126) x 10-4
µ0 [C · m]
     µ0 [D]		 2.653(10) x 10-29 
     7.954(3)		 63024
µ1 [C · m]
     µ1 [D]		 2.668(10) x 10-29 
     7.997(3)
µ2 [C · m]
     µ2 [D]		 2.682(10) x 10-29 
     8.039(3)
µ3 [C · m]
     µ3 [D]		 2.695(10) x 10-29 
     8.079(3)
Be [MHz] 9372.508(16) 78001
µr [u] 14.3325557  
re [10-10 m] 1.9396299(34)a  

a Recalculated as re = [505379.006(51) / µrBe]1/2 with units as given in table.





Barium Oxide A 1Σ

138Ba16O

Constant Value (Unc.) Ref.
Be [MHz] 7744.3(7) 73014
αe [MHz] 32.08(15)
De [kHz] 8.4 a
re [10-10 m] 2.1338(1)b  

a From A. Lagerqvist, E. Lind, and R. F. Barrow, Proc. Phys. Soc. 63A, 1132 (1950).

b Recalculated as re = [505379.006(51) / µrBe]1/2 with units as given in table.
NIST Physical Measurement Laboratory National Institute of Standards and Technology NIST Physical Measurement Laboratory Back to the diatomic molecule selection page