Difference between revisions of "LB Feb2017 Se Investigations"
| Line 7: | Line 7: | ||
As a first attempt at extracting the half life of the 103 keV line, the following procedure was followed: | As a first attempt at extracting the half life of the 103 keV line, the following procedure was followed: | ||
| + | |||
1)Fix a window around the line of interest. | 1)Fix a window around the line of interest. | ||
| + | |||
2)Do a pol0 fit to estimate the background. | 2)Do a pol0 fit to estimate the background. | ||
| + | |||
3)Integrate the output of the pol0 fit within the window region. | 3)Integrate the output of the pol0 fit within the window region. | ||
| + | |||
4)Use SetOptStat commands to get the integral over the entire window. | 4)Use SetOptStat commands to get the integral over the entire window. | ||
| + | |||
5)Subtract the background and divide by the run time to get the activity. | 5)Subtract the background and divide by the run time to get the activity. | ||
Below is an example of this process. | Below is an example of this process. | ||
Revision as of 19:05, 8 March 2017
Neutron knockout on Se-82
While looking to see if certain lines are indeed selenium within the spectrum, it is worth noting that there are 2 states for Se-81. There is a metastable state with a 57 minute half life and a gamma emission of 103 keV. First I will attempt to show that this metastable state can indeed be seen in the spectrum.
Below is an overlay of 5 plots with different cuts in time.
As a first attempt at extracting the half life of the 103 keV line, the following procedure was followed:
1)Fix a window around the line of interest.
2)Do a pol0 fit to estimate the background.
3)Integrate the output of the pol0 fit within the window region.
4)Use SetOptStat commands to get the integral over the entire window.
5)Subtract the background and divide by the run time to get the activity.
Below is an example of this process.