Gamma counter for the measurement of 210Pb
Research areas and keywords
UKÄ subject classification
Type of infrastructure
DescriptionThe laboratory measures the natural gamma radiation in samples from sediment cores for 210Pb and its daughter products and 137Cs. Models are used to determine the sediment rate.
The facility has the capability of measuring 8-10 sediment cores per year with most of the samples (90%) coming from investigators at LU and a small portion of external samples measured.
The process is slow and usually takes 2 months once dried sediment material is received from the user. Samples must be changed daily by a person. If there is a cue for the instrument, it can take up to 6 months to obtain a sedimentation rate.
Equipment and resourcesOrtec germanium detector (Model GEM-FX8530P4-RB), Ultra Low Background Lead Shield, Electrical cooling unit, Multi-channel analyzer, GammaVision software, calibration source
All instrumentation are placed in the Lead 210 Laboratory in Room 170 in the Geology Building.
Services providedMeasuring of sedimentation rates from sediment cores. Includes counting of gamma radiation and using models to determine sedimentation rates.
Available for loanAvailable for loan - internal and external
Terms of access:
Internal users have first priority. A discussion is held with each user to determine their immediate need of data generated by the instrument.
The facility was originally funded by the infrastructure grant. Users are charged a fee of 15.000kr per core and that funding is used to operate the laboratory.