Cascade effects in the excitation of np{sup 5}(n+1)p states of krypton and xenon atoms by polarized electrons

Journal Article · Sat Mar 01 04:00:00 EST 2003 · Physical Review. A

DOI:https://doi.org/10.1103/PhysRevA.67.032707· OSTI ID:20633843

Yu, D H; Williams, J F; Chen, X J; Hayes, P A ^[1]; Bartschat, K ^[2]; Zeman, V ^[3]

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1. Center for Atomic, Molecular and Surface Physics, Physics Department, University of Western Australia, Perth, WA 6009 (Australia)
2. ITAMP, Harvard Smithsonian Center for Astrophysics, Cambridge, Massachusetts 02138 (United States)
3. Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario, M5S-3H6 (Canada)

The integrated Stokes parameters of the decay photons from the excited np{sup 5}(n+1)p[5/2]{sub 3}, np{sup 5}(n+1)p{sup '}[3/2]{sub 2}, and np{sup 5}(n+1)p{sup '}[3/2]{sub 1} (n=5 and 6) states of Kr and Xe, respectively, are measured from near threshold to 100 eV using incident polarized electrons. The effects of the cascade photons on the Stokes parameters have been investigated using a pulsed beam of polarized electrons. The cascade effects for the final excited states are more significant for the linear polarization P{sub 1} parameter than for the circular polarization P{sub 3} parameter and they do not always have depolarization effects. The integrated state multipoles, determined from the integrated Stokes parameters corrected for cascade effects, are closer to, but not in agreement with, the values from semirelativistic R matrix and relativistic distorted-wave approximation methods.

• OSTI ID: 20633843
• Journal Information: Physical Review. A, Journal Name: Physical Review. A Journal Issue: 3 Vol. 67; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
ATOMS
DEPOLARIZATION
DISTORTED WAVE THEORY
ELECTRON-ATOM COLLISIONS
ELECTRONS
EV RANGE
EXCITATION
EXCITED STATES
KRYPTON
MULTIPOLES
P STATES
PHOTONS
POLARIZATION
R MATRIX
RELATIVISTIC RANGE
STOKES PARAMETERS
XENON