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Large enhancement of deuteron polarization with frequency modulated microwaves

  • B. Adeva
  • , E. Arik
  • , S. Ahmad
  • , A. Arvidson
  • , B. Badelek
  • , M. K. Ballintijn
  • , G. Bardin
  • , G. Baum
  • , P. Berglund
  • , L. Betev
  • , I. G. Bird
  • , R. Birsa
  • , P. Björkholm
  • , B. E. Bonner
  • , N. de Botton
  • , M. Boutemeur
  • , F. Bradamante
  • , A. Bressan
  • , A. Brüll
  • , J. Buchanan
  • S. Bültmann, E. Burtin, C. Cavata, J. P. Chen, J. Clement, M. Clocchiatti, M. D. Corcoran, D. Crabb, J. Cranshaw, J. Çuhadar, S. Dalla Torre, A. Deshpande, R. van Dantzig, D. Day, S. Dhawan, C. Dulya, A. Dyring, S. Eichblatt, J. C. Faivre, D. Fasching, F. Feinstein, C. Fernandez, B. Frois, C. Garabatos, J. A. Garzon, T. Gaussiran, M. Giorgi, E. von Goeler, I. A. Golutvin, A. Gomez, G. Gracia, N. de Groot, M. Grosse Perdekamp, E. Gülmez, D. von Harrach, T. Hasegawa, P. Hautle, N. Hayashi, C. A. Heusch, N. Horikawa, VW Hughes, G. Igo, S. Ishimoto, T. Iwata, M. de Jong, E. M. Kabuß, T. Kageya, R. Kaiser, A. Karev, H. J. Kessler, T. J. Ketel, I. Kiryushin, A. Kishi, Y. Kisselev, L. Klostermann, D. Krämer, V. Krivokhijine, V. Kukhtin, J. Kyynäräinen, M. Lamanna, U. Landgraf, K. Lau, T. Layda, J. M. Le Goff, F. Lehar, A. de Lesquen, J. Lichtenstadt, T. Lindqvist, M. Litmaath, S. Lopez-Ponte, M. Lowe, A. Magnon, G. K. Mallot, F. Marie, A. Martin, J. Martino, T. Matsuda, B. Mayes, J. S. McCarthy, K. Medved, G. van Middelkoop, D. Miller, J. Mitchell, K. Mori, J. Moromisato, G. S. Mutchler, A. Nagaitsev, J. Nassalski, L. Naumann, B. Neganov, T. O. Niinikoski, J. E.J. Oberski, A. Ogawa, S. Okumi, C. S. Özben, A. Penzo, C. A. Perez, F. Perrot-Kunne, D. Peshekhonov, R. Piegaia, L. Pinsky, S. Platchkov, M. Plo, D. Pose, H. Postma, J. Pretz, T. Pussieux, J. Pyrlik, I. Reyhancan, J. M. Rieubland, A. Rijllart, J. B. Roberts, S. E. Rock, M. Rodriguez, E. Rondio, O. Rondon, L. Ropelewski, A. Rosado, I. Sabo, J. Saborido, G. Salvato, A. Sandacz, D. Sanders, I. Savin, P. Schiavon, K. P. Schüler, R. Segel, R. Seitz, Y. Semertzidis, S. Sergeev, F. Sever, P. Shanahan, E. Sichtermann, G. Smirnov, A. Staude, A. Steinmetz, H. Stuhrmann, K. M. Teichert, F. Tessarotto, W. Thiel, M. Velasco, J. Vogt, R. Voss, R. Weinstein, C. Whitten, R. Willumeit, R. Windmolders, W. Wislicki, A. Witzmann, A. Yañez, N. I. Zamiatin, A. M. Zanetti, J. Zhao
  • University of Santiago de Compostela
  • Turkish Atomic Energy Authority
  • Rice University
  • Uppsala University
  • University of Warsaw
  • Delft University of Technology
  • CEA Saclay
  • Bielefeld University
  • Aalto University
  • Ludwig Maximilian University of Munich
  • CERN
  • University of Trieste
  • University of Montreal
  • University of Freiburg
  • Administrative Headquarters of the Max Planck Society
  • University of Virginia
  • University of California at Los Angeles
  • University of Houston
  • Northwestern University
  • Northeastern University
  • Joint Institute for Nuclear Research
  • Yale University
  • Johannes Gutenberg University Mainz
  • Nagoya University
  • University of Miyazaki
  • Paul Scherrer Institute
  • University of California at Santa Cruz
  • High Energy Accelerator Research Organization, Tsukuba
  • Institute for Beam Particle Dynamics
  • Tel Aviv University
  • Istanbul Technical University
  • Universidad de Buenos Aires
  • American University Washington DC
  • German Electron Synchrotron
  • Technische Universität Dresden
  • Helmholtz-Zentrum Hereon
  • Universite de Mons

Research output: Contribution to journalArticlepeer-review

20 Scopus citations

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.

Original languageEnglish
Pages (from-to)339-343
Number of pages5
JournalNuclear Inst. and Methods in Physics Research, A
Volume372
Issue number3
DOIs
StatePublished - Apr 1 1996

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