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APS » Journals » Phys. Rev. Lett. » Volume 91 » Issue 21
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Phys. Rev. Lett. 91, 214801 (2003) [4 pages]

First Spin Flipping of a Stored Spin-1 Polarized Beam

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V. S. Morozov, Z. B. Etienne*, M. C. Kandes, A. D. Krisch, M. A. Leonova, D. W. Sivers†, V. K. Wong, and K. Yonehara
Spin Physics Center, University of Michigan, Ann Arbor, Michigan 48109-1120, USA

V. A. Anferov, H. O. Meyer, P. Schwandt, E. J. Stephenson, and B. von Przewoski
Indiana University Cyclotron Facility, Bloomington, Indiana 47408-0768, USA

Received 17 April 2003; published 21 November 2003

We recently studied spin flipping of a 270 MeV vertically polarized deuteron beam stored in the Indiana University Cyclotron Facility Cooler Ring. We adiabatically swept an rf solenoid’s frequency through an rf-induced spin resonance and observed its effect on the deuterons’ vector and tensor polarizations. After optimizing the resonance crossing rate and maximizing the solenoid’s voltage, we measured a vector spin-flip efficiency of 94.2%±0.3%. We also found striking behavior of the spin-1 tensor polarization.

© 2003 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.91.214801
DOI:
10.1103/PhysRevLett.91.214801
PACS:
29.27.Bd, 29.27.Hj, 41.75.Ak

*Also at Indiana University, Bloomington, IN 47408.

†Also at Portland Physics Institute, Portland, OR 97201.

 
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