Design, construction, and characterization of a prompt gamma activation analysis facility at the Oregon State University TRIGA® reactor Public Deposited

http://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/j9602319g

Descriptions

Attribute NameValues
Creator
Abstract or Summary
  • In this work a prompt gamma neutron activation analysis (PGNAA) facility has been designed, built, and characterized at the Oregon State University TRIGA® reactor. PGNAA is a technique used to determine the presence and quantity of trace elements such as boron, hydrogen and carbon which are more difficult to detect with other neutron analysis methods. In PGNAA, isotopes are subjected to a neutron beam, resulting in the formation of an unstable compound nucleus. The compound nucleus immediately decays, producing a series of gamma-rays, whose energies are distinctive to each element. These gamma-rays are then measured using an HPGe detector to determine the elemental composition of the sample. The measured thermal and epithermal neutron fluxes of the PGNAA facility at Oregon State University are 2.81 x 10⁷ ± 5.13 x 10⁵ cm⁻²s⁻¹ and 1.70 x 10⁴ ± 3.11 x 10² cm⁻²s⁻¹ respectively. This gives the facility a cadmium ratio of 106. Measured detection limits for boron, chlorine, and potassium in SRM 1571 orchard leaf standard were, 5.6 x 10⁻⁴mg/g, 8.2 x 10⁻² mg/g and, 1.0 mg/g respectively. Also, the detection limit for hydrogen in high-density polyethylene is, 6.8 x 10⁻²mg/g. Detection limits for additional elements are presented in this work.
Resource Type
Date Available
Date Copyright
Date Issued
Degree Level
Degree Name
Degree Field
Degree Grantor
Commencement Year
Advisor
Committee Member
Academic Affiliation
Non-Academic Affiliation
Keyword
Subject
Rights Statement
Language
Replaces
Additional Information
  • description.provenance : Made available in DSpace on 2009-06-03T17:27:50Z (GMT). No. of bitstreams: 1 Microsoft Word - JThesis PGNAA.docx.pdf: 17229375 bytes, checksum: dbf3cddf7f5d2b51f3ed50e9ff563973 (MD5)
  • description.provenance : Approved for entry into archive by Julie Kurtz(julie.kurtz@oregonstate.edu) on 2009-06-01T18:35:53Z (GMT) No. of bitstreams: 1 Microsoft Word - JThesis PGNAA.docx.pdf: 17229375 bytes, checksum: dbf3cddf7f5d2b51f3ed50e9ff563973 (MD5)
  • description.provenance : Submitted by Joshua Robinson (robinjos@onid.orst.edu) on 2009-05-28T20:22:29Z No. of bitstreams: 1 Microsoft Word - JThesis PGNAA.docx.pdf: 17229375 bytes, checksum: dbf3cddf7f5d2b51f3ed50e9ff563973 (MD5)
  • description.provenance : Approved for entry into archive by Laura Wilson(laura.wilson@oregonstate.edu) on 2009-06-03T17:27:50Z (GMT) No. of bitstreams: 1 Microsoft Word - JThesis PGNAA.docx.pdf: 17229375 bytes, checksum: dbf3cddf7f5d2b51f3ed50e9ff563973 (MD5)

Relationships

Parents:

This work has no parents.

Last modified

Downloadable Content

Download PDF

Items