Measurement by FIB on the ISS: Two Emissions of Solar Neutrons Detected?

Table 3

Acomparison of solar neutron events observed by the SEDA-FIB detector with SMM event. The average trigger rate is simply obtained by dividing the total number of events by the observation time, while the mean flux is obtained taking the detection efficiency of both detectors into account (0.021 and 0.3 for SEDA and SMM) and also the detector area (100 and 450 cm² for SEDA and SMM).

Date of events			Total number of events	Average trigger rate (Hz)	Mean flux (events/cm^2 sec)
Mar. 7, 2011	M3.7	SEDA	89	0.09	0.042
Jun. 7, 2011	M2.5	SEDA	88	0.06	0.029
Jun. 21, 1980	X2.5	SMM	2,000	2.0	0.13