# Experiment 6.1 137Ce Measured at 5.2 microcurie Started at 6:47:50 stopped at 6:51:06 Elapsed live time 193.92s Gross area 35331 $\Sigma_{U1}$ Background elapsed live time 193.94s $\Sigma_b = 558$ Now repeating with different distances We're also changing our time because the first one took god damn forever Now doing 55.64 seconds | Distance [cm] | $\Sigma_{U1}$ | | ------------- | ------------- | | 10 | 10122 | | 9 | 11763 | | 8 | 14464 | | 7 | 17476 | | 6 | 22073 | | 5 | 28268 | | 4 | 38084 | | Background | 130 | # Experiment 6.3 We do not have a spicy cobalt source, so instead we're jamming them up at 1cm. Now we're at 2cm to 1 cm. at 1.34 cps We used gross counts. This is a test!