Beam-Induced Nuclear Depolarization in a Gaseous Polarized-Hydrogen Target
Journal Article
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· Physical Review Letters
OSTI ID:328561
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- Department of Physics, University of Alberta, Edmonton, Alberta, T6G 2N2 (CANADA)
- Physics Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States)
- W. K. Kellog Radiation Lab, California Institute of Technology, Pasadena, California 91125 (United States)
- Nuclear Physics Laboratory, University of Colorado, Boulder, Colorado 80309-0446 (United States)
- DESY, Deutsches Elektronen Synchrotron, 22603 Hamburg (Germany)
- DESY, 15738 Zeuthen (Germany)
- Joint Institute for Nuclear Research, 141980 Dubna (Russia)
- Physikalisches Institut, Universitaet Erlangen-Nuernberg, 91058 Erlangen (Germany)
- Dipartimento di Fisica, Universita di Ferrara, 44100 Ferrara (Italy)
- Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati, 00044 Frascati (Italy)
Spin-polarized atomic hydrogen is used as a gaseous polarized-proton target in high-energy and nuclear-physics experiments operating with internal beams in storage rings. When such beams are intense and bunched, this type of target can be depolarized by a resonant interaction with the transient magnetic field generated by the beam bunches. This effect has been studied with the HERA positron beam in the HERMES experiment at DESY. Resonances have been observed and a simple analytic model has been used to explain their shape and position. Operating conditions for the experiment have been found where there is no significant target depolarization due to this effect. {copyright} {ital 1999} {ital The American Physical Society }
- Research Organization:
- Argonne National Laboratory (ANL), Argonne, IL
- OSTI ID:
- 328561
- Journal Information:
- Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 6 Vol. 82; ISSN 0031-9007; ISSN PRLTAO
- Country of Publication:
- United States
- Language:
- English
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