Low Intensity Gamma-Ray Spectroscopy of the Lake Labyrinth Meteorite

Author(s) Information

Tristan C. Paul, California Polytechnic State University - San Luis ObispoFollow

Department - Author 1

Physics Department

Degree Name - Author 1

BS in Physics

Date

9-2015

Primary Advisor

Roger Grismore, Jennifer Klay

Abstract/Summary

A 23.7g fragment of the Lake Labyrinth Meteorite (fell in 1924, collected in 1934 at Lake Labyrinth in South Australia, Australia) was re-investigated for evidence of the presence of 98Tc using a two dimensional low-intensity gamma-ray spectrometer. A new calibration technique using 26Al sources found the gamma-rays previously thought to be due to 98Tc are more likely from 166Ho. The presence of 166Ho is most likely due to activation of the stable 165Ho in the meteorite from terrestrial background sources where it was stored.

URL: https://digitalcommons.calpoly.edu/physsp/133