A. Martin et al., AN ANTINEUTRON DETECTORS CALIBRATION METHOD FOR (P)OVER-BAR-P-](N)OVER-BAR-N CHARGE-EXCHANGE DIFFERENTIAL CROSS-SECTION MEASUREMENT, Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, 346(1-2), 1994, pp. 237-252
Two modular antineutron detectors have been built and used to detect t
he low energy antineutrons produced in the charge-exchange reaction pp
bAR --> nnBAR in an experiment at LEAR. A novel calibration method has
been used to measure the absolute efficiencies of the detectors, and
allows for a precise measurement of the reaction differential cross-se
ction.