RESONANCES IN THE SCATTERING OF ELECTRONS FROM ATOMS,

Abstract

A formal procedure is developed for describing the resonances in electron-scattering from atoms caused by metastable, auto-ionizing states. It is shown that the position of a particular resonance is given exactly by the usual Rayleigh-Schrodinger perturbation series pertaining to an unperturbed discrete state embedded in an unperturbed continuum. An expression is given for the width which shows explicitly what initial state i and final state f should be used in the 'golden rule' as applied to autoionization. The formal results are applied to the lowest 1Pu resonance in He(+) - e(-) scatering; i.e., the 2s2p 1Pu metastable state of He. The resonance energy obtained is 60.28 ev above the ground state of He, and the calculated width is 0.038 ev. These results are seen to be in excellent agreement with the experimental values. (Author)

Document Details

Document Type
Technical Report
Publication Date
Feb 16, 1966
Accession Number
AD0629001

Entities

People

  • William H. Miller

Organizations

  • Harvard University

Tags

DTIC Thesaurus Topics

  • Agreements
  • Atoms
  • Electron Scattering
  • Electrons
  • Ground State
  • Metastable State
  • Perturbations
  • Resonance
  • Scattering

Fields of Study

  • Physics

Readers

  • Calculus or Mathematical Analysis
  • Molecular Photonics/Laser Physics
  • Theoretical Analysis.

Technology Areas

  • Microelectronics