Table A.3.
Rotational and distortion constants for 1-ECP and 2-ECP.
| 1-ECPa | 1-ECPb | 2-ECPc | 2-ECPb | |
|---|---|---|---|---|
| Constant | (MHz) | (MHz) | (MHz) | (MHz) |
| A | 8374.116845(672) | 8374.116982(777) | 8262.3702(10) | 8262.3708(15) |
| B | 1879.207441(354) | 1879.206888(286) | 1876.250982(284) | 1876.252295(342) |
| C | 1549.116825(323) | 1549.117494(236) | 1543.195532(187) | 1543.194285(305) |
| ΔJ 10−5 | 6.862(218) | 6.643(162) | 4.879(292) | 5.646(179) |
| ΔJK 10−3 | 2.4044(163) | 2.4271(154) | 2.5504(205) | 2.5219(288) |
| δJ 10−5 | 1.815(113) | 1.6858(645) | 1.082(216) | 1.0217(707) |
| δK 10−4 | 15.59(145) | 13.04(106) | 6.98(113) | |
| Nlines | 30 | 44 | 39 | 63 |
| νmax (GHz) | 24.974 | 48.420 | 25.805 | 46.992 |
| (J, Ka)max | 7,3 | 14,3 | 8,3 | 14,3 |
| σ (kHz) | 1.3 | 8.3 | 3.0 | 16.0 |
Notes. Values between parentheses correspond to the uncertainties of the parameters in units of the last significant digits.
Rotational and distortion constants from a fit to the lines of 1-ECP measured in the laboratory by McCarthy et al. (2020), including the distortion constant δK.
Rotational and distortion constants from a fit to lines of 2-ECP measured in the laboratory by McCarthy et al. (2020) with the uncertainties of 2 kHz changed to 4 kHz.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.