\\ Species Tag:        &   38008 & Name:&  H$^{37}$Cl$^+$           
\\ Version:            &       1 & &Chloroniumyl cation
\\ Date:       &  May. 2012      & & v = 1 $\leftarrow$ 0
\\ Contributors:&  H. Gupta      & & $^2\Pi_{1/2} \leftarrow ^2\Pi_{3/2}$
\\             &  B. J. Drouin   & & $^2\Sigma \leftarrow ^2\Pi$
\\ Lines Listed:       &    2248 & Q(300.0)=& 197.2359      
\\ Freq. (GHz) $<$     &    7500 & Q(225.0)=& 147.8291      
\\ Max. J:             &      40 & Q(150.0)=& 102.6078      
\\ LOGSTR0=            &    -8.0 & Q(75.00)=&  60.0006      
\\ LOGSTR1=            &   -10.0 & Q(37.50)=&  40.3538      
\\ Isotope Corr.:      &  -0.611 & Q(18.75)=&  33.1643      
\\ Egy. (cm$^{-1}$) $>$&     0.0 & Q(9.375)=&  31.9492      
\\ $\mu_0$ = & 1.0               & A=&
\\ $\mu'$  = & 0.1                  & B=&293003.82
\\ $\mu_{el}$ = & 0.13              & C=&
\headend
The optical spectra in W. D. Sheasley, 1972, Ph.D. Dissertation, The Ohio State University; Ann Arbor, MI. 
The transition dipole moments for infrared ($\mu'$ and optical ($\mu_{el}$) are calculated by A. Pradhan {\it et al.} 1991, 
J. Chem. Phys, {\bf 95}, 9010.  The magnetic dipole, which predicts fine structure transitions in the mid and far-ir was taken to be 1 Bohr magneton. The state identifiers v = 90 and 
v = 91 refer to the ground and first excited vibrational levels, respectively.  The  $^2\Sigma$ ground vibrational state has a state identifier of 50, and the state identifier 10 is
the $^2\Pi$ vibrational ground state without hyperfine splitting.

\begin{table}[h]
\begin{tabular}{ccc}
\hline
state identifier (v) & state & HFS\\
\hline
10 & $^2\Pi$ v = 0 & no \\
50 & $^2\Sigma$ v = 0 & no \\
90 & $^2\Pi$ v = 0 & yes \\
91 & $^2\Pi$ v = 1 & yes \\
\hline
\end{tabular}
\end{table}