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APS » Journals » Phys. Rev. Lett. » Volume 104 » Issue 22
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Phys. Rev. Lett. 104, 222501 (2010) [4 pages]

Production of a Beam of Tensor-Polarized Deuterons Using a Carbon Target

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H. Seyfarth1,*, R. Engels1, F. Rathmann1, H. Ströher1, V. Baryshevsky2, A. Rouba2, C. Düweke3,†, R. Emmerich3,‡, A. Imig3,§, K. Grigoryev1,4, M. Mikirtychiants1,4, and A. Vasilyev4
1Institut für Kernphysik, Jülich Center for Hadron Physics, Forschungszentrum Jülich, Leo–Brandt–Straße 1, D-52425 Jülich, Germany
2Research Institute for Nuclear Problems, Bobruiskaya Straße 11, 220050 Minsk, Belarus
3Institut für Kernphysik, Universität zu Köln, Zülpicher Straße 77, D-50937 Köln, Germany
4Petersburg Nuclear Physics Institute, 188300 Gatchina, Russia

Received 26 November 2009; published 3 June 2010

An initially unpolarized beam of deuterons is found to acquire tensor polarization after traversing a foil of spin-zero target nuclei. The effect, called nuclear spin dichroism, has been predicted theoretically, albeit resulting in small values of pzz of the order of 0.01 for energies around 10 MeV. The experiment was carried out at the Köln tandem accelerator using carbon targets bombarded by deuterons. The observed polarization is as large as pzz=-0.28±0.03 for a beam of 14.8 MeV and a 129  mg/cm2 target. The results allow one to produce tensor-polarized deuterons with pzz around -0.30 (or +0.25) from an initially unpolarized beam using a carbon target of appropriate thickness.

© 2010 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.104.222501
DOI:
10.1103/PhysRevLett.104.222501
PACS:
13.88.+e, 24.70.+s, 25.45.De, 29.27.Hj

*H.Seyfarth@fz-juelich.de

†Present address: AREVA NP GmbH, 91058 Erlangen, Germany.

‡Present address: TU München, Physics Department, 85748 Garching, Germany.

§Present address: BNL, Upton, NY 11973, USA.

 
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