id:"swepub:oai:DiVA.org:liu-105065"
Search: id:"swepub:oai:DiVA.org:liu-105065" > SO3- radicals for E...
- 1 of 1
- Previous record
- Next record
- To hitlist
SO3- radicals for EPR dosimetry: X- and Q band EPRstudy and LET dependency of crystalline potassium dithionate
-
- Gustafsson, Håkan (author)
- Östergötlands Läns Landsting,Linköpings universitet,Medicinsk radiofysik,Hälsouniversitetet,Medicinsk teknik i Östergötland
-
- Lund, Anders (author)
- Linköpings universitet,Institutionen för fysik, kemi och biologi,Tekniska högskolan
-
- Hole, Eli O. (author)
- Department of Physics, University of Oslo, Norway
- show more...
- show less...
- (creator_code:org_t)
- Pergamon Press, 2013
- 2013
- English.
- In: Radiation Measurements. - : Pergamon Press. - 1350-4487 .- 1879-0925. ; 59, s. 123-128
- Journal article (peer-reviewed)
Abstract
Subject headings
Close
- The structures of the free radicals formed by the irradiation of potassium dithionate (K 2S2O6) with 60Co g -rays and 14N7þ ions were investigated by EPR to further examine a recently proposed LET effect in this material. Two types of SO 3 radical ions were identified in X-irradiated single crystals by measurements at X- and Q bands. One of these (S1) exhibited 33S hyperfine couplings At ¼ 12.49, Ajj ¼ 15.60 mT, the other (S2) A t ¼ 11.29, Ajj ¼ 13.92 mT. The g-factors were nearly isotropic, gt ¼ 2.0010, gjj ¼ 2.0003; and g t ¼ 2.0026, gjj ¼ 2.0008, respectively. The 33S hyperfine coupling tensors and g-tensors were axially symmetric about the trigonal -axis, coinciding with the direction of the SeS bonds of the two nonequivalent S 2O2 6 ions in the crystal. A model for the radiation damage was proposed in which the SO 3 radical ions retain the orientation of the SO 3 groups, aligned along the trigonal axis. The structure of a third main radical species (S3) with gt ¼ 2.0026, gjj ¼ 2.0052 could not be unambiguously assigned, due to undetected 33S features. The relative integrated intensities of S1, S2 and S3 depended on the radiation quality and were approximately estimated as 0.18: 0.65:0.17 for 60Co g-rays and 0.47: 0.38: 0.15 for 14N7þ ions. Additional weak lines on the low field side of the main signal were tentatively attributed to SO 2 radical ions. An even weaker strongly anisotropic pair of lines was attributed to SO 3 radical pairs separated by 0.93 e0.95 nm along the trigonal axis.
Keyword
- Potassium dithionate
- EPR dosimetry
- radical ions
- Linear energy transfer (LET)
Publication and Content Type
- ref (subject category)
- art (subject category)
Find in a library
- Radiation Measurements (Search for host publication in LIBRIS)
To the university's database
- 1 of 1
- Previous record
- Next record
- To hitlist
Find more in SwePub
- By the author/editor
- Gustafsson, Håka ...
- Lund, Anders
- Hole, Eli O.
- Sagstuen, Einar
- Articles in the publication
- Radiation Measur ...
- By the university
- Linköping University
Search outside SwePub
- Extend your search to:
- Google Book Search
- Google Scholar
Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.
- Copyright © LIBRIS - National Library Systems
- LIBRIS.kb.se
