Improved detection of radioactive material using a series of measurements
| dc.contributor.author | Mann, Jenelle, author | |
| dc.contributor.author | Brandl, Alexander, advisor | |
| dc.contributor.author | Johnson, Thomas, committee member | |
| dc.contributor.author | Kokoszka, Piotr, committee member | |
| dc.contributor.author | Leary, Del, committee member | |
| dc.date.accessioned | 2016-08-18T23:11:41Z | |
| dc.date.available | 2016-08-18T23:11:41Z | |
| dc.date.issued | 2016 | |
| dc.description.abstract | The goal of this project is to develop improved algorithms for detection of radioactive sources that have low signal compared to background. The detection of low signal sources is of interest in national security applications where the source may have weak ionizing radiation emissions, is heavily shielded, or the counting time is short (such as portal monitoring). Traditionally to distinguish signal from background the decision threshold (y*) is calculated by taking a long background count and limiting the false negative error (α error) to 5%. Some problems with this method include: background is constantly changing due to natural environmental fluctuations and large amounts of data are being taken as the detector continuously scans that are not utilized. Rather than looking at a single measurement, this work investigates looking at a series of N measurements and develops an appropriate decision threshold for exceeding the decision threshold n times in a series of N. This methodology is investigated for a rectangular, triangular, sinusoidal, Poisson, and Gaussian distribution. | |
| dc.format.medium | born digital | |
| dc.format.medium | doctoral dissertations | |
| dc.identifier | Mann_colostate_0053A_13835.pdf | |
| dc.identifier.uri | http://hdl.handle.net/10217/176788 | |
| dc.language | English | |
| dc.language.iso | eng | |
| dc.publisher | Colorado State University. Libraries | |
| dc.relation.ispartof | 2000-2019 | |
| dc.rights | Copyright and other restrictions may apply. User is responsible for compliance with all applicable laws. For information about copyright law, please see https://libguides.colostate.edu/copyright. | |
| dc.title | Improved detection of radioactive material using a series of measurements | |
| dc.type | Text | |
| dcterms.rights.dpla | This Item is protected by copyright and/or related rights (https://rightsstatements.org/vocab/InC/1.0/). You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. For other uses you need to obtain permission from the rights-holder(s). | |
| thesis.degree.discipline | Environmental and Radiological Health Sciences | |
| thesis.degree.grantor | Colorado State University | |
| thesis.degree.level | Doctoral | |
| thesis.degree.name | Doctor of Philosophy (Ph.D.) |
Files
Original bundle
1 - 1 of 1
Loading...
- Name:
- Mann_colostate_0053A_13835.pdf
- Size:
- 10.85 MB
- Format:
- Adobe Portable Document Format