1. Compton scattering from the deuteron and extracted neutron polarizabilities
- Author
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Anders Sandell, B. Lindner, Lennart Isaksson, T. Glebe, Martin Karlsson, Mikael Lundin, Bent Schröder, Jan-Olof Adler, S. Proff, Björn Nilsson, C. Poech, A.I. L'vov, M.I. Levchuk, Kevin Fissum, D. A. Sims, Kurt Hansen, O. Kaltschmidt, Martin Schumacher, D. E. Oner, Per Lilja, Mark Boland, and K. Kossert
- Subjects
Physics ,Photon ,Spectrometer ,010308 nuclear & particles physics ,Compton scattering ,FOS: Physical sciences ,General Physics and Astronomy ,01 natural sciences ,7. Clean energy ,Nuclear physics ,Deuterium ,0103 physical sciences ,Neutron ,Beta (velocity) ,Sum rule in quantum mechanics ,Nuclear Experiment (nucl-ex) ,Atomic physics ,Nuclear Experiment ,010306 general physics ,Nucleon - Abstract
Differential cross sections for Compton scattering from the deuteron were measured at MAX-lab for incident photon energies of 55 MeV and 66 MeV at nominal laboratory angles of $45^\circ$, $125^\circ$, and $135^\circ$. Tagged photons were scattered from liquid deuterium and detected in three NaI spectrometers. By comparing the data with theoretical calculations in the framework of a one-boson-exchange potential model, the sum and difference of the isospin-averaged nucleon polarizabilities, $\alpha_N + \beta_N = 17.4 \pm 3.7$ and $\alpha_N - \beta_N = 6.4 \pm 2.4$ (in units of $10^{-4}$ fm$^3$), have been determined. By combining the latter with the global-averaged value for $\alpha_p - \beta_p$ and using the predictions of the Baldin sum rule for the sum of the nucleon polarizabilities, we have obtained values for the neutron electric and magnetic polarizabilities of $\alpha_n= 8.8 \pm 2.4$(total) $\pm 3.0$(model) and $\beta_n = 6.5 \mp 2.4$(total) $\mp 3.0$(model), respectively., Comment: 4 pages, 2 figures, revtex. The text is substantially revised. The cross sections are slightly different due to improvements in the analysis
- Published
- 2002