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Spectroscopy of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow /><mml:mrow><mml:mn>1</mml:mn><mml:mn>3</mml:mn><mml:mo>,</mml:mo><mml:mn>1</mml:mn><mml:mn>4</mml:mn></mml:mrow></mml:msup></mml:mrow><mml:mi mathvariant="normal">B</mml:mi></mml:math>via the one-neutron knockout reaction
The single-nucleon knockout reactions ${}^{9}\mathrm{Be}{(}^{14}\mathrm{B}{,}^{13}\mathrm{B}+\ensuremath{\gamma})X$ and ${}^{197}\mathrm{Au}{(}^{14}\mathrm{B}{,}^{13}\mathrm{B}+\ensuremath{\gamma})X,$ at an incident energy of 60 MeV per nucleon, have been used to probe the structure of ${}^{14}\mathrm{B}$ and of the core fragment ${}^{13}\mathrm{B}.$ A dominant $2s$ configuration is deduced for the neutron in the ground state of ${}^{14}\mathrm{B}.$ The longitudinal momentum distribution …