NOTICE: Due to a lapse in annual appropriations, most of this website is not being updated. Learn more.

Form submissions will still be accepted but will not receive responses at this time. Sections of this site for programs using non-appropriated funds (such as NVLAP) or those that are excepted from the shutdown (such as CHIPS and NVD) will continue to be updated.

U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Physical Measurement Laboratory

Triatomic Spectral Database, Table A.2.1

Share

Table A.2.1. Centrifugal Distortion Analysis of F2O
Transition $$J^{'}_{K^{'}_{P},~K^{'}_{O}}~~J^{''}_{K^{''}_{P},~K^{''}_{O}}$$ Measured Frequency (MHz) Unweighted Fit Kirchhoff's Fit
Δν a (MHz) t(Δν) Δν a (MHz) t(Δν)
Transitions not included in present analysis:
70,7   ←   61,6 104 837.67 0.350 3.1 0.450 3.7
91,8   ←   90,9 97 965.32  0.321 2.1 0.957 5.8
101,9   ←   92,8 97 879.86  0.375 3.2 0.688 5.4
114,7   ←   123,10 98 425.89  0.557 4.5 0.600 4.4
165,11   ←   174,14 92 195.43  0.569 4.6 0.762 5.3
172,15   ←   181,18 59 137.55  -1.962 -11.1 -0.059 b -1.7
222,21   ←   213,18 38 675.10  -1.104 -10.5 -0.188 b -2.8
364,32   ←   373,35 29 473.73 -30.740 -16.0 +31.045 +4.6
Additional transitions not included in Kirchhoff's fit:
182,17   ←   173,14 46 795.92 0.160 2.0 0.725 6.9
212,20   ←   203,17 45 089.52  0.089 1.2 1.215 10.1
242,23   ←   233,20 17 257.96 -0.044 -0.6 -1.360 -6.9
253,22   ←   262,25 14 720.63 -0.003 -0.1 8.184 10.6
    Some predicted transitions with standard deviations:
  Present Results
 ν0 calc.		 Kirchhoff's Results
 ν0 calc.
192,17   ←   201,20 95 193.233 ± 0.33 95 187.297 ± 0.31
263,23   ←   272,26 34 189.509 ± 0.18 34 175.032 ± 1.35
273,24   ←   282,27 55 661.343 ± 0.34 55 637.913 ± 2.21
283,25   ←   292,28 78 868.074 ± 0.59 78 832.342 ± 3.41
293,26   ←   302,29 103 521.610 ± 0.96 103 469.450 ± 5.04
303,28   ←   294,25 101 226.877 ± 0.36 101 212.210 ± 1.43
313,29   ←   304,26 90 570.656 ± 0.38 90 555.764 ± 1.50
323,30   ←   314,27 76 921.974 ± 0.36 76 908.831 ± 1.35
353,33   ←   344,30 19 751.208 ± 0.42 19 764.853 ± 1.47
354,31   ←   363,34 3 945.408 ± 1.03 3 911.673 ± 3.69
364,32   ←   373,35 29 504.470 ± 1.91 29 442.685 ± 6.80
374,33   ←   383,36 56 618.503 ± 3.13 56 519.049 ± 11.04
384,34   ←   393,37 84 965.079 ± 4.75 84 816.543 ± 16.62

a Observed minus calculated frequency.

b Transitions included in Kirchhoff's analysis [71031].

Analytical chemistry, Atomic / molecular / quantum and Reference data

Contacts

Sensor Science Division

Created May 25, 2018, Updated February 19, 2025
Was this page helpful?