DETERMINATION OF SR-90 IN ENVIRONMENTAL-SAMPLES WITH RESONANCE IONIZATION SPECTROSCOPY IN COLLINEAR GEOMETRY

Authors
ZIMMER K STENNER J KLUGE HJ LANTZSCH J MONZ L OTTEN EW PASSLER G SCHWALBACH R SCHWARZ M STEVENS H WENDT K HERRMANN G NIESS S TRAUTMANN N WALTER K BUSHAW BA
Citation
K. Zimmer et al., DETERMINATION OF SR-90 IN ENVIRONMENTAL-SAMPLES WITH RESONANCE IONIZATION SPECTROSCOPY IN COLLINEAR GEOMETRY, Applied physics. B, Lasers and optics, 59(2), 1994, pp. 117-121
Citations number
23
Categorie Soggetti
Physics, Applied",Optics
Journal title
Applied physics. B, Lasers and optics → ACNP
ISSN journal
09462171
Volume
59
Issue
2
Year of publication
1994
Pages
117 - 121
Database
ISI
SICI code
0946-2171(1994)59:2<117:DOSIEW>2.0.ZU;2-V
Abstract
A new, fast technique for trace analysis of the radioactive isotopes S r-89 and Sr-90 in environmental samples has been developed. Convention al mass separation is combined with resonance ionization spectroscopy in collinear geometry, which provides high selectivity and sensitivity . In addition, a chemical separation procedure for sample preparation has been developed. The described technique was used to determine the Sr-90 content in almost-equal-to 870 m3 air samples collected near Mun ich during and shortly after the Chernobyl reactor accident in April 1 986. The content of Sr-90 was measured to be 1.4 mBq per m3, correspon ding to 1.6 x 10(9) atoms of Sr-90 per sample. This value is in good a greement with the results of radiochemical measurements.