Differential cross sections for elastic electron scattering in argon over the angular range 130 deg. -180 deg

Differential cross sections for elastic electron scattering in argon have been measured in the angular range of backward scattering from 130 deg. to 180 deg. at incident electron energies of 5, 7.5, and 10 eV. In these measurements the magnetic angle-changing technique with a newly developed conical...

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Bibliographic Details
Published in:Physical review. A, Atomic, molecular, and optical physics Atomic, molecular, and optical physics, 2004-06, Vol.69 (6)
Main Authors: Mielewska, Brygida, Linert, Ireneusz, Zubek, Mariusz, King, George C.
Format: Article
Language:English
Subjects:
ANGULAR MOMENTUM
ARGON
ATOMIC AND MOLECULAR PHYSICS
BACKSCATTERING
COMPARATIVE EVALUATIONS
DIFFERENTIAL CROSS SECTIONS
ELECTRON-ATOM COLLISIONS
ELECTRONS
EV RANGE
INTEGRAL CROSS SECTIONS
MAGNETIC FIELDS
MOMENTUM TRANSFER
SOLENOIDS
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Summary:Differential cross sections for elastic electron scattering in argon have been measured in the angular range of backward scattering from 130 deg. to 180 deg. at incident electron energies of 5, 7.5, and 10 eV. In these measurements the magnetic angle-changing technique with a newly developed conical solenoid system has been employed. The differential cross sections measured in the above scattering angle range together with the cross sections of Gibson et al. [J. Phys. B 29, 3177 (1996)] have been integrated to obtain integral elastic and momentum transfer cross sections. Detailed comparison is presented of the differential and integral cross sections obtained with the results of various theoretical calculations. The results indicate that, in general, the theoretical cross sections at the above electron energies are overestimated at the larger scattering angles.
ISSN:1050-2947
1094-1622
DOI:10.1103/PhysRevA.69.062716