Measurement of the $^{12}$C($n,p$)$^{12}$B cross section at n_TOF (CERN)   by in-beam activation analysis
  The integral cross section of the $^{12}$C($n,p$)$^{12}$B reaction has been determined for the first time in the neutron energy range from threshold to several GeV at the n_TOF facility at CERN. The measurement relies on the activation technique, with the $\beta$-decay of $^{12}$B measured over a period of four half-lives within the same neutron bunch in which the reaction occurs. The results indicate that model predictions, used in a variety of applications, are mostly inadequate. The value of the integral cross section reported here can be used as a benchmark for verifying or tuning model calculations. 
P. \v{Z}ugec, N. Colonna, D. Bosnar, A. Mengoni, S. Altstadt, J.   Andrzejewski, L. Audouin, M. Barbagallo, V. B\'ecares, F....
nucl-ex