Green AS, Gallup GA, Rosenberry MA, Gay TJ. Spin-exchange-induced circularly polarized molecular fluorescence.
PHYSICAL REVIEW LETTERS 2004;
92:093201. [PMID:
15089463 DOI:
10.1103/physrevlett.92.093201]
[Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2003] [Indexed: 05/24/2023]
Abstract
We have measured the circular polarization of light emitted from both atomic H and molecular H2 after bombarding H2 with longitudinally polarized electrons. For both atomic and molecular fluorescence near threshold we observe a circular polarization as great as 10% of the electron polarization. This represents the first direct observation of spin transfer in electron-molecule collisions.
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