\\ Species Tag:        &   14002 & Name:&  N-atom
\\ Version:            &       3 & &D-state
\\ Date:       &  Dec. 1989     & &
\\ Contributor:&  H. M. Pickett & &
\\             &                 & &
\\ Lines Listed:       &       6 & Q(300.0)=&       29.512
\\ Freq. (GHz) $<$     &     262 & Q(225.0)=&       29.349
\\ Max. J:             &       3 & Q(150.0)=&       29.034
\\ LOGSTR0=            &   -48.2 & Q(75.00)=&       28.151
\\ LOGSTR1=            &   -48.1 & Q(37.50)=&       26.583
\\ Isotope Corr.:      &     0.0 & Q(18.75)=&       24.138
\\ Egy. (cm$^{-1}$) $>$& 19223.0 & Q(9.375)=&       21.120
\\ $\mu_a$ = &                   & A=&
\\ $\mu_b$ = &                   & B=&
\\ $\mu_c$ = &                   & C=&
\headend
 
      The $^2$D$_{5/2}$ state is 19,223 cm$^{-1}$ above the ground $^4$S$_{3/2}$
state  (C. E. Moore, 1949, Atomic Energy Levels I, National Bureau of Standards).  The
$^2$D$_{3/2}$ - $^2$D$_{5/2}$ inverted fine structure transition at 261 GHz has
been measured by M. Bogey {\it et al.}, 1989, Astrophys.~J.~{\bf 339}, L49.
The average spontaneous emission rate from the 
$^2$D states to the $^4$S states is $1.06 \times 10^{-6}$ sec$^{-1}$.  
In contrast, the spontaneous emission rate from $^2$D$_{3/2}$ F = 5/2 to 
$^2$D$_{5/2}$ F = 7/2 is $3.15 \times 10^{-9}$ sec$^{-1}$.