- Title
- Optically stimulated luminescence of ultra-high molecular weight polyethylene: a study of dosimetric features
- Creator
- Chithambo, Makaiko L
- Creator
- Kalita, Jitumani M
- Date Issued
- 2018
- Date
- 2018
- Type
- text
- Type
- article
- Identifier
- http://hdl.handle.net/10962/110035
- Identifier
- vital:33217
- Identifier
- https://doi.org/10.1016/j.radmeas.2018.06.006
- Description
- We report the dosimetric features of ultra-high molecular weight polyethylene (UHMWPE) using luminescence optically stimulated using 470 nm blue light. Samples irradiated to between 1 and 1000 Gy produces luminescence that increases with irradiation dose to produce a linear dose response between 1 and 1000 Gy. The sample was determined not to be affected by pre-dose in tests using a pre-dose of 4000 Gy. This characteristic precludes the need for elaborate background erasing routines typical of dosimetry experiments. The signal has good reproducibility. We used this property to test recovery of ‘unknown’ doses with encouraging results. It was observed that luminescence can also be stimulated using 870 nm infrared light. The dose response, fading, pre-dose effect and the ability to optically stimulate luminescence from the polymer is discussed in terms of curing involving free-radicals.
- Format
- 5 pages
- Format
- Language
- English
- Relation
- Radiation Measurements
- Relation
- Chithambo, M.L. and Kalita, J.M., 2018. Optically stimulated luminescence of ultra-high molecular weight polyethylene: A study of dosimetric features. Radiation Measurements, 120, pp.78-82.
- Relation
- Radiation Measurements volume 120 78 82 December 2018 1350-4487
- Rights
- Elsevier
- Rights
- Use of this resource is governed by the terms and conditions of the Science Direct Terms and Conditions Statement (https://www.elsevier.com/legal/elsevier-website-terms-and-conditions)
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RU Department of Physics and Electronics
Chithambo, Makaiko Liwiro (Distinguished Prof)
SDG 09. Industry, Innovation and Infrastructure
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