PMT detection unit

standard detection unit for application in luminescence dating and dosimetry

bi-alkaline cathode PMT (HAMAMATSU H7360-02)

sensitivity range: 300-650 nm

peak sensitivity: 420 nm ( 3.1 E5 counts s^-1 pW^-1)

dark counts typ. <100 cts

photon counter

counting linearity (random pulses, 10% loss) 6.0 E6 cps

UV-VIS optics

for standard applications in luminescence dating and dosimetry

detection unit with standard bi-alkaline cathode PMT (Electron Tubes 9235QB)

sensitivity 160-630 nm

peak sensitivity: 30% quantum efficiency @ 200 nm and 350 nm

dark count typ. 300 cts

photon counter

counting linearity (random pulses, 10% loss)

UV-VIS optics

necessary/useful if standard UV-VIS PMT sensitivity in the yellow to red wavelength band is insufficient

useful e.g. for quartz (flint)/calcite orange-red or feldspar red luminescence measurements

thermoelectric/air cooled GaAsP photocathode PMT (HAMAMATSU)

sensitivity: 300 – 720 nm

peak-sensitivity: 40% quantum efficiency @ 580 nm

cooling max. 35 °C below room temperature

cooling time approx. 5 min

typically 100 cps dark signal at 0°C

photon counting system

counting linearity (random pulses, 10% count loss) 1.5 E6 cps

UV-VIS optics

required for RF dose determination employing the 865 nm potassium feldspar emission

required for 880 nm IRPL detection

useful/necessary for any other measurements where red and NIR sensitivity is needed

thermoelectric/air cooled GaAs photocathode PMT (HAMAMATSU H7421-50)

sensitivity: 380 – 890 nm,

peak-sensitivity: 12% quantum efficiency @ 800 nm

cooling max. 35 °C below room temperature

cooling time approx. 5 min

typically 60 cps dark signal at -10°C (125 cps at 0°C)

photon counting system

counting linearity (random pulses, 10% count loss) 1.5 E6 cps

includes UV-NIR optics