# LB Feb 2017 Geometric Efficiency Calculations

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Below are the theoretical calculations for the theoretical decay frequencies

Below is a table where the actual efficiency will be calculated for position R (farthest position).

Run | Source | Energy (keV) | Expected Rate (Hz) | HpGe Rate (Hz) | HpGe Det D Efficiency (%) |

r5825 | Na-22 | 511 | 79122.6 | (480:540) (4.309-0.065=4.244) | 0.005 |

r5826 | Na-22 | 511 | 28091.2 | (480:540)(1.105-0.02281=1.0821) | 0.004 |

r5827 | Na-22 | 511 | 861.1 | (480:540)(0.04037-0.009123=0.031247) | 0.004 |

r5829 | Na-22 | 511 | 137692 | (480:540)(3.686-0.01939=3.67) | 0.003 |

r5830 | Na-22 | 511 | 44224 | (480:540) (1.073-0.0057=1.0673) | 0.002 |

r5831 | Na-22 | 511 | 139058.52 | (480:540)(3.283-0.05702=3.22598) | 0.002 |