M. Budzanowski1, P. Bilski1, P. Olko1, A. Delgado2, J. C. Saez-Vergara2, M. P. R. Waligorski1,3
1 Institute of Nuclear Physics, 152, Radzikowskiego St., 31-342 Cracow, Poland,
2 CIEMAT, ADVA, Complutense 22, E-28040, Madrid, Spain,
3 Centre of Oncology, 11, Garncarska St., Cracow, Poland
New types of highly-sensitive TL detectors (LiF:Mg,Cu,P and alpha-Al2O3:C) were tested in very short term measurements of natural radiation doses. The experiments were carried out in Roskilde, Denmark, by RISØ National Laboratory. Detectors were exposed to natural radiation for periods of 3.5 and 16 hours. To assess only the cosmic component of natural radiation, detectors were exposed on a wooden pier at Roskilde Fjord. The actual dose rate was continuously monitored by a Reuter-Stokes (RS-111) high pressure ionisation chamber. The obtained results indicate that all tested detectors are capable of measuring natural doses after an exposure of only a few hours.