期刊
出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.nima.2013.03.043
关键词
Polarized atomic beam source; Polarized internal target; Nuclear polarized hydrogen and deuterium
类别
资金
- German Ministry for Education and Research (BMBF) [RUS-649-96, 06 ER 831]
- Forschungszentrum Julich (FFE) [41149451]
- Deutsche Forschungsgemeinschaft [436 RUS 113/430]
- Russian Ministry of Sciences
A polarized atomic beam source was developed for the polarized internal storage-cell gas target at the magnet spectrometer ANKE of COSY-Julich. The intensities of the beams injected into the storage cell, measured with a compression tube, are 7.5 x 10(16) hydrogen atoms/s (two hyperfine states) and 3.9 x 1016 deuterium atoms/s (three hyperfine states). For the hydrogen beam the achieved vector polarizations are p(z)approximate to +/- 0.92. For the deuterium beam, the obtained combinations of vector and tensor (p(zz)) polarizations are p(z)approximate to +/- 0.90 (with a constant p(zz)approximate to + 0.86), and p(zz) = +0.90 or pzz = 1.71 (both with vanishing p(z)). The paper includes a detailed technical description of the apparatus and of the investigations performed during the development. This source has been very successfully used for single and double polarization measurements at ANKE as well as for studies of the polarization of recombining hydrogen molecules. (C) 2013 Elsevier B.V. All rights reserved.
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