Section of the submillimeter spectrum of CH3CN. Transitions of 13CH3CN (J = 36−35) and CHCN (J = 35−34) in their ν8 = 1 excited vibrational states were labeled with their k quantum numbers. Spin-statistics cause k = −2, −5, and 7 to appear stronger than expected, 1∗ indicates the A2 component of the asymmetry-like split k = + 1 transition, see Sect. 3 for further details. The clipped lines are the J = 35−34k = −8 and k = 10 transitions of the main isotopolog in ν8 = 1. The latter line is overlapping the A1 component of the k = + 1J = 36−35 line of CH3C15N, ν8 = 1. The lines appear similar to second derivatives of a Gaussian line-shape because of the 2f-modulation.
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.