Search: onr:"swepub:oai:research.chalmers.se:c28a8d9f-1af3-440a-963b-24b6be2f12b6" >
Time optimization o...
-
Holmgren, S.Totalförsvarets forskningsinstitut (FOI),Swedish Defence Research Agency (FOI)
(author)
Time optimization of Sr-90 measurements: Sequential measurement of multiple samples during ingrowth of Y-90
- Article/chapterEnglish2016
Publisher, publication year, extent ...
Numbers
-
LIBRIS-ID:oai:research.chalmers.se:c28a8d9f-1af3-440a-963b-24b6be2f12b6
-
https://doi.org/10.1016/j.apradiso.2016.01.011DOI
-
https://research.chalmers.se/publication/235049URI
Supplementary language notes
-
Language:English
-
Summary in:English
Part of subdatabase
Classification
-
Subject category:art swepub-publicationtype
-
Subject category:ref swepub-contenttype
Notes
-
The aim of this paper is to contribute to a more rapid determination of a series of samples containing Sr-90 by making the Cherenkov measurement of the daughter nuclide Y-90 more time efficient. There are many instances when an optimization of the measurement method might be favorable, such as; situations requiring rapid results in order to make urgent decisions or, on the other hand, to maximize the throughput of samples in a limited available time span. In order to minimize the total analysis time, a mathematical model was developed which calculates the time of ingrowth as well as individual measurement times for n samples in a series. This work is focused on the measurement of Y-90 during ingrowth, after an initial chemical separation of strontium, in which it is assumed that no other radioactive strontium isotopes are present. By using a fixed minimum detectable activity (MDA) and iterating the measurement time for each consecutive sample the total analysis time will be less, compared to using the same measurement time for all samples. It was found that by optimization, the total analysis time for 10 samples can be decreased greatly, from 21 h to 6.5 h, when assuming a MDA of 1 Bq/L and at a background count rate of approximately 0.8 cpm.
Subject headings and genre
Added entries (persons, corporate bodies, meetings, titles ...)
-
Tovedal, A.Totalförsvarets forskningsinstitut (FOI),Swedish Defence Research Agency (FOI)
(author)
-
Björnham, OscarTotalförsvarets forskningsinstitut (FOI),Swedish Defence Research Agency (FOI)
(author)
-
Ramebäck, Henrik,1967Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)rameback
(author)
-
Totalförsvarets forskningsinstitut (FOI)Chalmers tekniska högskola
(creator_code:org_t)
Related titles
-
In:Applied Radiation and Isotopes: Elsevier BV110, s. 150-1540969-80431872-9800
Internet link
Find in a library
To the university's database