Gaseous Electronics

42

DEUTERATED AMMONIA

CONTENTS

42.1 Total and Partial Ionization Cross Sections

42.2 Attachment Cross Sections

References

 

Deuterated ammonia (ND₃) is a molecule with all the three hydrogen atoms of ammonia (NH₃) replaced with deuterium atoms. It has electronic polarizability of 1.89 × 10⁻⁴⁰ F m². The vibrational modes and energies of the molecule are shown in Table 42.1 (Shimanouchi, 1972).

TABLE 42.1Vibrational Modes and Energies of ND₃

Designation	Type of Motion	Energy (meV)
ν1	Symmetrical stretch	300.0
ν2	Symmetrical deformation	92.7
ν3	Degenerate stretch	317.9
ν4	Degenerate deformation	147.7

TABLE 42.2Total Ionization Cross Sections

Cross Section for Ion Pair Production
Energy (eV)	Total (10−20 m2)