AlBr Molecular Constants

AlBr

Aluminum Monobromide

	²⁷Al⁷⁹Br	²⁷Al⁸¹Br
Constant	Value (Unc.)	Value (Unc.)	Ref.
Y₀₁ [MHz]	4772.6098(10)	4742.5866(10)	72000
Y₁₁ [MHz]	-25.7956(7)	-25.5526(7)
Y₂₁ [MHz]	0.6087(11)	0.06010(11)
Y₀₂ [kHz]	-3.3832(11)	-3.3408(11)
Y₁₂ [Hz]	6.2(5)	6.1(5)
Y₀₃ [10^-4 Hz]	-3.354(11)	-3.291(11)
eQq₀(Al) [MHz]	-27.90(50)		72006 ^a
eQq₀(Br) [MHz]	+78.78(20)		72006 ^a
µ_r [u]	20.1070883	20.2343831
r_e [10^-10 m]	2.294859(3) ^b	2.294859(3) ^b

^a See [73020].

^b Recalculated as r_e = [505379.006(51) / µ_rY₀₁]^1/2 with units as given in table.

NIST Physical Measurement Laboratory