A luminescence study of NaMgF₃:Dy³⁺ and NaMgF₃:Nd³⁺ for applications in radiation dosimetry
by J. Donaldson; G.V.M. Williams
International Journal of Nanotechnology (IJNT), Vol. 14, No. 1/2/3/4/5/6, 2017

Abstract: Photoluminescence (PL) and radioluminescence (RL) from Dy³⁺ and Nd³⁺ were observed in the fluoroperovskite host NaMgF₃ at visible and near infrared wavelengths. In the case of NaMgF₃:Dy³⁺, the emission lifetime is long enough to efficiently separate the PL emission from more prompt emissions, such as Čerenkov photons, by temporal means. This property is useful in certain fibre optic dosimeter applications involving pulsed high energy X-rays, such as radiotherapy dosimetry. Such applications are often complicated by a background of Čerenkov photons and an emphasis on emission in the infrared may also prove valuable in mitigating this problem. At doses above approximately 1 kGy, the dependence of RL intensity on absorbed dose was found to be largely free from the influence of radiation induced colour centres for the near infrared emissions exhibited by both the Dy³⁺ and Nd³⁺ dopant.

Online publication date: Fri, 24-Feb-2017

The full text of this article is only available to individual subscribers or to users at subscribing institutions.

 
Existing subscribers:
Go to Inderscience Online Journals to access the Full Text of this article.

Pay per view:
If you are not a subscriber and you just want to read the full contents of this article, buy online access here.

Complimentary Subscribers, Editors or Members of the Editorial Board of the International Journal of Nanotechnology (IJNT):
Login with your Inderscience username and password:

Username:        Password:          Forgotten your password?

Want to subscribe?
A subscription gives you complete access to all articles in the current issue, as well as to all articles in the previous three years (where applicable). See our Orders page to subscribe.

If you still need assistance, please email subs@inderscience.com