Phys. Rev. Lett. 86, 979 - 982 (2001)Quantifying Relativistic Interactions from Angular Momentum Partitioning Measurements during Photoionization |
PRL Celebrates 50 Years
This Week's Milestone Letters are from 1984: |
O. Yenen1, K. W. McLaughlin2, D. H. Jaecks1, M. M. Sant'Anna3, and E. A. Seddon4
1Behlen Laboratory of Physics, University of Nebraska–Lincoln, Lincoln, Nebraska 68588-0111
2Department of Physics and Engineering, Loras College, Dubuque, Iowa 52004-0178
3Advanced Light Source, Ernest Orlando Lawrence Berkeley National Laboratory, University of California, Berkeley, California 94720
4Daresbury Laboratory, Daresbury, Warrington Cheshire WA4 4AD, United Kingdom
Received 31 March 2000
We have measured the degree of helicity of fluorescent radiation from Ar+{3p4[3P]4p} 2P1/2o formed by circularly polarized synchrotron radiation in the region of double excitations converging to Ar+3p4 nl satellite states. Angular momentum coupling allows the partitioning of the one unit of angular momentum brought into the system to be demarcated. We obtain a nonvanishing expectation value of the total spin of the residual ion-photoelectron system indicating significant relativistic interactions during the photoionization process.
©2001 The American Physical Society
URL: http://link.aps.org/abstract/PRL/v86/p979
DOI: 10.1103/PhysRevLett.86.979
PACS: 32.80.Fb
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