Pulsing

Pulsing the stimulation allows the separation of quartz and feldspar luminescence signals for dating of mixed mineral samples

Pulsing: mixed mineral samples

Luminescence decay of quartz and feldspar signals (from Denby et al., 2006)

Sometimes mineral separation in sediment or solid samples is not possible (polymineral samples), especially in cases of intergrowth of minerals. Pulsing (i.e. short light stimulation) the stimulation employs the different decay times of luminescence signals from different minerals in order to detect the luminescence signal predominately from a single mineral.

  • Separate luminescence signals from different minerals

  • Avoid tedious sample preparation

  • See also spatially resolved luminescence

Denby PM, Botter-Jensen L, Murray AS, Thomsen KJ & Moska P (2006) Application of pulsed OSL to the separation of the luminescence components from a mixed quartz/feldspar sample. Radiation Measurements 41, 774-779.

Feathers JK, Casson MA, Schmidt AH & Chithambo ML (2012) Application of pulsed OSL to polymineral fine-grained samples. Radiation Measurements 47, 201-209.