Integrated yields
From GOSIA
(partial clean-up) |
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p-gamma counts expected using the equation following equation 6.44b in the manual: | p-gamma counts expected using the equation following equation 6.44b in the manual: | ||
| - | Detected p-gamma coincident events <math>N_i = 10^(-30) [Q / qe] [N_A / A] Y(I_i-->I_f) \epsilon_p \epsilon_\gamma \Delta \Omega_\gamma</math> | + | Detected p-gamma coincident events |
| + | |||
| + | <math>N_i = 10^(-30) [Q / qe] [N_A / A] Y(I_i-->I_f) \epsilon_p \epsilon_\gamma \Delta \Omega_\gamma</math> | ||
If the absolute efficiency is known well, then it is possible to retrieve | If the absolute efficiency is known well, then it is possible to retrieve | ||
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equation. | equation. | ||
| - | In the equation above the <math> | + | In the equation above the <math>\epsilon_\gamma</math> is the absolute |
efficiency as a fraction between 0 and 1 (not including angular effects already | efficiency as a fraction between 0 and 1 (not including angular effects already | ||
integrated in the "yield"). Let this be called the absolute photopeak efficiency. | integrated in the "yield"). Let this be called the absolute photopeak efficiency. | ||
| - | The <math>\Delta\ | + | The <math>\Delta\Omega_\gamma</math> term is the solid angle of the Ge detector. A typical absolute photopeak efficiency |
| + | <math>\epsilon_\gamma</math> is 0.1 to 0.15. If the solid angle subtended by the crystal is ~0.1 sr, then for one crystal <math>\epsilon_\gamma \Delta\Omega_\gamma ~ 0.01</math>. | ||
If the laboratory setup and the EM matrix are accurately represented in the Gosia input, then the absolute counts can be obtained: | If the laboratory setup and the EM matrix are accurately represented in the Gosia input, then the absolute counts can be obtained: | ||
