Jlab Measurement Of The He-4 Charge Form Factor At Large Momentum Transfers
PHYSICAL REVIEW LETTERS(2014)
摘要
The charge form factor of He-4 has been extracted in the range 29 fm(-2) <= Q(2) <= 77 fm(-2) from elastic electron scattering, detecting He-4 recoil nuclei and electrons in coincidence with the high resolution spectrometers of the Hall A Facility of Jefferson Lab. The measurements have uncovered a second diffraction minimum for the form factor, which was predicted in the Q(2) range of this experiment. The data are in qualitative agreement with theoretical calculations based on realistic interactions and accurate methods to solve the few-body problem.
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关键词
nucleus,diffraction,spectrometer,scaling
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