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INDOOR RADON MEASUREMENTS IN PATRAS, GREECE, WITH
SOLID STATE NUCLEAR TRACK DETECTORS

H. Papaefthymiou*, A. Mauroudis*, P. Kritidis**
* Division of Physical, Inorganic and Nuclear Chemistry, Department of Chemistry, University of
Patras, Greece 265 00
** NCSR “Demokritos”, 153 10 Aghia Paraskevi, Athens, Greece

Measurements of indoor radon ( 222 Rn) concentrations were carried out by using LR-115 II solid state
nuclear track detectors (SSNTD). One hundred forty detectors were placed randomly in Patras houses
for two periods of three months exposure, from December 1996 to November 1997. The observed
mean radon values compared with the standard recommended values are low, while the maximum
recorded value is found to be within the limits. The influence of seasonal variation as well the
distance from the ground on radon level were also investigated.
Key wordw: Radon; 222 Rn; radioactivity, indoor; solid state nuclear track detector; LR-115 II.