dc.creator Pinkley, Lary W. en_US dc.creator Narahari Rao, K. en_US dc.creator Dang-Nhu, M. en_US dc.creator Tarrago, G. en_US dc.creator Poussigue, G. en_US dc.date.accessioned 2006-06-15T13:47:12Z dc.date.available 2006-06-15T13:47:12Z dc.date.issued 1976 en_US dc.identifier 1976-RM-7 en_US dc.identifier.uri http://hdl.handle.net/1811/9726 dc.description Author Institution: Department of Physics, The Ohio State University; Laboratoire de Spectroscopie, Mol\'{e}culaire I, Universit\'{e} de Paris VI en_US dc.description.abstract The $\nu_{3}$ fundamental vibration rotation band of carbon-13 enriched methane $(^{13}CH_{4})$ was recorded using a high resolution vacuum infrared grating spectrograph. Forbidden transitions of this band are reported for the first time. Of the nearly 900 transitions identified, 560 are forbidden transitions are 332 of the forbidden transitions have $11\le J\le 16$. Pairs of forbidden-allowed transitions having the same upper state energy levels were used to calculate 550 linearly independent differences between ground state energy levels. From these data, a least-squares method was used to calculate the following ground state structure constants and their standard deviations (in $cm^{-1}$):\begin{eqnarray*}\beta^{O}/hc&=&5.240820\pm0.000056\\ \gamma^{O}/hc&=&-(1.0856\pm0.0015)\times 10^{-4}\\ \in^{O}/hc&=&-(1.4174\pm0.0034)\times 10^{-6}\\ \xi^{O}/hc&=&-(1.73\pm0.37)\times 10^{-11}\end{eqnarray*} The 550 combination differences utilized in the calculation can be reproduced with the stated constants with an overall standard deviation of $0.015_{5}$ $cm^{-1}$. en_US dc.format.extent 137545 bytes dc.format.mimetype image/jpeg dc.language.iso English en_US dc.publisher Ohio State University en_US dc.title FORBIDDEN LINES OF THE $\nu_{3}$ BAND OF $^{13}CH_{4}$ en_US dc.type article en_US
﻿