Originally posted by physicsopenlab, the link is Detection of beta and alfa radiation with KC761B

Fig 1 – The back side of the instrument with the PIN sensor housing for beta and alpha radiation

Fig 2 – Detail of the PIN sensor with its mylar protection

Fig 3 – Detection of beta radiation from a Sr-90 source with the scintillation sensor

Fig 4 – Detection of beta radiation with the PIN sensor

Fig.5 shows the energy spectrum of the Sr-90 source. The spectrum has a minimum threshold value of about 400 keV, below which no signal is detected, this is normal considering the type of sensor and the protections positioned in front of the sensor itself which absorb part of the incident radiation. The spectrum however extends towards energy values ​​of about 1 MeV, in qualitative agreement with the energy range of the beta emission of the Sr-90 source (reported in the previous paragraph).

Fig 5 – Beta radiation spectrum of a Sr-90 source

Fig 6 – Detection of alpha radiation from an Am-241 source

Fig 7 – Alpha spectrum of the Am-241 source

Fig 8 – Measured alpha spectrum of the Am-241 source

Fig 9 – Alpha spectra of the Am-241 source taken at increasing distances

Fig 10 – Measurement of a uraninite sample with the scintillation sensor

Fig 11 – Measurement of a uraninite sample with the PIN sensor

Currency
Euro