Table 3: Requisite column densities for unit optical depth in the absorption line centre for the deuterated forms of H3+. Spectroscopic data from Ramanlal & Tennyson (2004).
Species Upper level Lower level El Wavelength $N_{\tau =1}$
      (cm-1) ($\mu $m) (cm-2)
H2D+ (para) (1, 1, 1)a (0, 0, 0) 0.0 4.162 $1.9 \times 10^{14}$
H2D+ (ortho) (0, 0, 0) (1, 1, 1) 60.0 4.395 $6.1 \times 10^{14}$
H2D+ (ortho) (2, 0, 2) (1, 1, 1) 60.0 4.136 $7.1 \times 10^{14}$
H2D+ (ortho) (2, 2, 0) (1, 1, 1) 60.0 3.985 $4.9 \times 10^{14}$
D2H+ (ortho) (1, 1, 1) (0, 0, 0) 0.0 4.965 $4.7 \times 10^{14}$
D2H+ (ortho) (1, 0, 1) (0, 0, 0) 0.0 4.72 $5.5 \times 10^{14}$
D2H+ (para) (1, 1, 0) (1, 0, 1) 34.9 5.02 $6.9 \times 10^{14}$
D2H+ (para) (2, 0, 2) (1, 0, 1) 34.9 4.63 $7.6 \times 10^{14}$
D3+ (ortho) (0, 1, 1, 0, 1)b (0, 0, 0, 0, 0) 0.0 5.296 $2.2 \times 10^{13}$
D3+ (meta) (0, 1, 0, 1, 1) (0, 0, 1, 1, 0) 32.3 5.548 $1.6 \times 10^{14}$
D3+ (meta) (0, 1, 2, 1, -1) (0, 0, 1, 1, 0) 32.3 5.198 $9.9 \times 10^{13}$
D3+ (meta) (0, 1, 2, 1, 1) (0, 0, 1, 1, 0) 32.3 5.166 $9.1 \times 10^{13}$
D3+ (para) (0, 1, 1, 0, -1) (0, 0, 1, 0, 0) 43.6 5.433 $4.5 \times 10^{14}$
$\textstyle \parbox{13cm}{ $^a$\space ($J, K_{\rm a}, K_{\rm c}$ ). \\ $^b$\space ($\nu _{1}, \nu _{2}, J, G, U$ ). }$

Source LaTeX | All tables | In the text