PuSH - Publication Server of Helmholtz Zentrum München: Electron Paramagnetic Resonance of Human Tooth Enamel at High Gamma Ray Doses.

Information

Clues to quality of journals

Open Access Policy of Helmholtz Association 2016

CC Licencences

Publication Metrics

Navigation

Home

Deutsch

EVA: Electronic Publishing

New EVA Application

Research

Advanced Search

Browse by ...

... HMGU-Authors/Consortia

... Organizational Structure

... Journal

... Publication Type

... Research Data

... Arbeitsgruppen

... Publication Year

Publication overview

Statistics

Statistics (last 5 years)

OA Publications

Publish

Submit Publication

Import publication from...

...EVA

Report missing publication

Highlights

Support & Contact

Contact persons

Help

Data protection

Helmholtz Open Science

JANE Journal Estimator

SHERPA/RoMEO

DOAJ

Export:

Text

Endnote (RIS) BIB

BibTeX

Liidja, G.* ; Wieser, A.

Electron Paramagnetic Resonance of Human Tooth Enamel at High Gamma Ray Doses.

Radiat. Prot. Dosim. 101, 503-506 (2002)

Open Access Green as soon as Postprint is submitted to ZB.

Abstract
Metrics
Extra information

Powdered human tooth enamel was exposed to Co-60 gamma rays up to a dose of 100 kGy. The electron paramagnetic resonance (EPR) signal intensity (1) of the radiation-generated carbon dioxide radicals was measured for dependence on absorbed dose (D). The EPR dose response can be fitted with an exponential saturation function I I-M[1 - exp(-D/D-37)] with the saturated signal intensity (I-M) and the dose saturation value (D-37). The obtained value D-37 = 9.64 (+/- 0.96) kGy (measured at least one month after irradiation) exceeds those given in the literature. The saturated concentration of orthorhombic CO2- radicals was estimated at 6.5 X 10(17) per gram of enamel by comparing the integrated EPR spectra of enamel and a standard MgO:Cr probe. For enamel samples, which were heated before irradiation for one hour at +405degreesC, the value of D-37T = 3.89 (+/- 0.44) kGy and the saturated value of CO2- radicals 3.4 X 10(17) per gram of enamel were lower than for unheated samples. The initial rise of the signal with the dose was slightly higher (8.8 X 10(13) radicals/g X Gy) for heated compared with unheated samples (6.8 X 10(13) radicals/g X Gy).

Impact Factor

Scopus SNIP

0.768

0.000