Studies of elastic e-NH/sub 3/ collisions

Journal Article · Wed Mar 01 04:00:00 EST 1989 · Phys. Rev. A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.39.2392· OSTI ID:6457154

Pritchard, H P; Lima, M A.P.; McKoy, V

We report differential and momentum-transfer cross sections for elastic scattering of electrons by NH/sub 3/ for collision energies from 2.5 to 20 eV. These cross sections were obtained in the fixed-nuclei static-exchange approximation using the Schwinger variational principle. Although fixed-nuclei cross sections for electron--polar-molecule collisions are inherently divergent at small angles, such results can provide useful estimates of the differential cross sections at intermediate and larger angles. The agreement at intermediate and larger scattering angles between the calculated and relative experimental cross sections, which are available at 8.5 and 15 eV, is good. The differential cross sections also show evidence of a weak d-wave enhancement around 8 eV. A significant feature seen in these cross sections, particularly at 15 and 20 eV, is their substantial backward peaking beyond 120/sup 0/.

• Research Organization: A. A. Noyes Laboratory of Chemical Physics, California Institute of Technology, Pasadena, California 91125
• OSTI ID: 6457154
• Journal Information: Phys. Rev. A; (United States), Journal Name: Phys. Rev. A; (United States) Vol. 39:5; ISSN PLRAA
• Country of Publication: United States
• Language: English

Related Subjects

640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
AMMONIA
COLLISIONS
CROSS SECTIONS
DATA
DIFFERENTIAL CROSS SECTIONS
ELECTRON COLLISIONS
ELECTRON-MOLECULE COLLISIONS
ENERGY RANGE
EV RANGE
EV RANGE 01-10
EV RANGE 10-100
HYDRIDES
HYDROGEN COMPOUNDS
INFORMATION
MOLECULE COLLISIONS
MOMENTUM TRANSFER
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
NUMERICAL DATA
SCHWINGER VARIATIONAL METHOD
THEORETICAL DATA
VARIATIONAL METHODS