Jacobi coordinate for NH–He and ND–He potential energy surface.
Plot of first four radial Legendre expansion coefficients (λ = 0…3) as a function of R. Solid lines denote NH–He while dashed lines denote ND–He.
Diagram of the energy levels of NH and ND.
Collisional excitation cross sections of ND by He out of N, j = 4, 5 state.
Temperature dependence of ND–He rate coefficients out of N, j = 4, 5 state. (a) Δj = ΔN transitions. (b) Δj ≠ ΔN transitions.
Temperature variation of the hyperfine resolved NH–He rate coefficients for transitions. (a) Δj = ΔN transitions. (b) Δj ≠ ΔN transitions. The number corresponds to the quantum number.
Same as Figure 6, but for ND–He rate coefficients.
Temperature variation of the fine structure resolved NH–He (solid line) and ND–He rate coefficients (dashed line) for selected N, j → N, j ′ transitions.
Fine structure energies of the ND molecule.
Comparison between NH and ND cross sections. The cross sections are in Å2.
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