Author/Authors :
Adeva، نويسنده , , B. and Arik، نويسنده , , E. and Ahmad، نويسنده , , S. and Arvidson، نويسنده , , A. and Badelek، نويسنده , , B. and Ballintijn، نويسنده , , M.K. and Bardin، نويسنده , , G. and Baum، نويسنده , , G. and Berglund، نويسنده , , P. and Betev، نويسنده , , L. and Bird، نويسنده , , I.G. and Birsa، نويسنده , , R. and Bjِrkholm، نويسنده , , P. and Bonner، نويسنده , , B.E. and de Botton، نويسنده , , N. and Boutemeur، نويسنده , , M. and B، نويسنده ,
Abstract :
We report a large enhancement of 1.7 in deuteron polarization up to values of 0.6 due to frequency modulation of the polarizing microwaves in a two liter polarized target using the method of dynamic nuclear polarization. This target was used during a deep inelastic polarized muon-deuteron scattering experiment at CERN. Measurements of the electron paramagnetic resonance absorption spectra show that frequency modulation gives rise to additional microwave absorption in the spectral wings. Although these results are not understood theoretically, they may provide a useful testing ground for the deeper understanding of dynamic nuclear polarization.
