Phenomena of spin rotation and oscillation of particles (atoms, molecules) containing in a trap blowing on by wind of high energy particles in storage ring - new method of measuring of spin-dependent part of zero-angle coherent scattering amplitude

Details Phenomena of spin rotation and oscillation of particles (atoms, molecules) containing in a trap blowing on by wind of high energy particles in storage ring - new method of measuring of spin-dependent part of zero-angle coherent scattering amplitude Phenomena of spin rotation and oscillation of particles (atoms, molecules) containing in a trap blowing on by wind of high energy particles in storage ring - new method of measuring of spin-dependent part of zero-angle coherent scattering amplitude

2002-01-22

arxiv.org/abs/hep-ph/0201202v2

Physics

High Energy Physics

High Energy Physics - Phenomenology

12 pages, 4 figures

Scientific paper

New experiment arrangement to study spin rotation and oscillation of particles of gas target through which beam of high energy particles passes is discussed. Such experiment arrangement make it realizable for storage ring and allows to study zero-angle scattering amplitude at highest possible energies. Life-time of particle beam in storage ring can reach several hours and even days. Life-time of particle in gas target (gas trap) is long too. Particles circulate in storage ring with frequency $\nu$ of several MHz that yields to the $\nu$-fold increase of density of high energy particles beam blowing gas trap in comparison with single passing case. Finally, this causes perfectly acceptable angle of spin rotation of particles containing in gas cell. Relation between index of refraction and effective potential energy of a particle in a medium is discussed. Phenomenon of spin rotation of a particle captured to a trap under the action of a beam of polarized particles is considered. Expressions for effective potential energy and angle of spin rotation are derived for particles in a trap. Rrotation and oscillation of deuteron spin is studied. Estimations for angle of rotation show that the effect can be experimentally observed.

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