KF

Potassium Fluoride

  39K19F 41K19F
Constant Value (Unc.) Ref. Value (Unc.) Ref.
Y01 [MHz] 8392.3125(8) 72019 8258.1298(10) a
Y11 [MHz] -70.0027(8) -68.3305(8)
Y21 [MHz] 0.208 74(30) 0.202 12(30)
Y02 [kHz] -14.493(16) 65028 -14.033(16)
eQq0(K) [MHz] -7.933 87(80) 67045 -9.6569(6) 67002
eQq1(K) [MHz] -7.837 73(90)    
eQq2(K) [MHz] -7.742 80(90)    
eQq3(K) [MHz] -7.649 53(90)    
eQq4(K) [MHz] -7.556 61(90)    
eQq5(K) [MHz] -7.464 99(90)    
eQqe(K) [MHz] -7.982 18(160)    
cK [kHz] 0.35(8)    
cF [kHz] 10.69(7)    
c3 [kHz] 0.42(6)    
c4 [kHz] 0.06(20)    
µ0 [C · m]
     µ0 [D]		 2.866 18(27) x 10-29 
     8.592 60(80)		 67041 2.866 14(27) x 10-29 
     8.592 48(80)		 67041
µ1 [C · m]
     µ1 [D]		 2.889 17(27) x 10-29 
     8.661 51(80)		    
µ2 [C · m]
     µ2 [D]		 2.912 32(27) x 10-29 
     8.730 93(80)		    
µ3 [C · m]
     µ3 [D]		 2.935 66(27) x 10-29 
     8.800 90(80)		    
µ4 [C · m]
     µ4 [D]		 2.959 17(27) x 10-29 
     8.871 38(80)		    
µ5 [C · m]
     µ5 [D]		 2.982 84(27) x 10-29 
     8.942 32(80)		    
µe [C · m]
     µe [D]		 2.854 75(27) x 10-29 
     8.558 32(80)		    
µr [u] 12.771 2434   12.978 7577  
re [10-10 m] 2.171 4568(1) b 2.171 4568(2) b

a Calculated with isotopic relations from isotope 39K19F.

b Recalculated as re = [505 379.006(51) / µrY01]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