29 citations · 29 across the 1 of their papers we have counts for
3 papers
physics.acc-ph2004★ 29 cited
Quasiperiodic spin-orbit motion and spin tunes in storage rings
D. P. Barber, J. A. Ellison, K. Heinemann
We present an in-depth analysis of the concept of spin precession frequency for integrable orbital motion in storage rings. Spin motion on the periodic closed orbit of a storage ri…
physics.acc-ph1999
V. The Semiclassical Foldy-Wouthuysen Transformation and the Derivation of the Bloch Equation for Spin-1/2 Polarised Beams Using Wigner Functions
K. Heinemann, D. P. Barber
A semiclassical Foldy--Wouthuysen transformation of the Dirac equation is used to obtain the radiationless Bloch equation for the polarisation density.
physics.acc-ph1999
III. The Permissible Equilibrium Polarisation Distribution in a Stored Proton Beam
D. P. Barber, K. Heinemann, G. H. Hoffstaetter +1
We illustrate the use of the invariant spin field for describing permissible equilibrium spin distributions in high energy spin polarised proton beams.}