Difference between revisions of "All 3 detectors working"
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Experimental cell setup after adding addition shielding: | Experimental cell setup after adding addition shielding: | ||
| − | [[Image:Apparatus October 2008.JPG| | + | [[Image:Apparatus October 2008.JPG|300 px]] |
Graph before shielding: | Graph before shielding: | ||
| − | [[Image:Before shielding.JPG]] | + | The number of counts for the gamma flash (Channels 2000-2500) = 818 |
| + | |||
| + | The number of counts for the neutrons (Channels 2500-4096) = 256 | ||
| + | |||
| + | Taking the ratio <math>\frac{gamma}{neutrons}</math> gives 3.19 | ||
| + | |||
| + | [[Image:Before shielding.JPG | 300 px]] | ||
| + | |||
Graph after shielding: | Graph after shielding: | ||
| − | [[Image:After shielding.JPG]] | + | The number of counts for the gamma flash (Channels 2000-2500) = 1127 |
| + | |||
| + | The number of counts for the neutrons (Channels 2500-4096) = 187 | ||
| + | |||
| + | Taking the ratio <math> \frac{gamma}{neutrons} </math> gives 6.03 | ||
| + | |||
| + | [[Image:After shielding.JPG |300 px]] | ||
| + | |||
| + | [http://wiki.iac.isu.edu/index.php/October_15%2C_2008 Go Back] | ||
Latest revision as of 06:32, 5 February 2009
Detector A: High Voltage = 1900V; Threshold = 5mV
Detector C: High Voltage = 1860V; Threshold = 10mV
Detector D: High Voltage = 1950V; Threshold = 5mV
Note: Really high background in the experimental cell, so more shielding was added: i.e. paraffin wax.
Experimental cell setup after adding addition shielding:
Graph before shielding:
The number of counts for the gamma flash (Channels 2000-2500) = 818
The number of counts for the neutrons (Channels 2500-4096) = 256
Taking the ratio gives 3.19
Graph after shielding:
The number of counts for the gamma flash (Channels 2000-2500) = 1127
The number of counts for the neutrons (Channels 2500-4096) = 187
Taking the ratio gives 6.03
