Broad Energy HPGe Gamma Spectrometry for Dose Rate Estimation for Trapped Charge Dating

Lichen and moss samples were collected from Russian Arctic areas (Kola Peninsula, Franz Josef Land and few other locations) in the 1990s. In 2020, 137Cs was determined by HPGe gamma spectrometry from these samples after which isotopes of Pu and U were radiochemically separated from the samples. Mass ratios 240Pu/239Pu and 235U/238U were determined by ICP-MS for utilizing the characteristic isotopic fingerprints of different nuclear events. The aim of the work was to survey radioactive contamination sources in terrestrial environment in Russian Arctic regions, which have not yet been completely explored in respect to anthropogenic isotopes and their origin in the environment.

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Dose rate estimation of the Tohoku hynobiid salamander, Hynobius lichenatus , in Fukushima

Journal of Environmental Radioactivity ◽

10.1016/j.jenvrad.2015.02.020 ◽

2015 ◽

Vol 143 ◽

pp. 123-134 ◽

Cited By ~ 17

Author(s):

Shoichi Fuma ◽

Sadao Ihara ◽

Isao Kawaguchi ◽

Takahiro Ishikawa ◽

Yoshito Watanabe ◽

...

Keyword(s):

Dose Rate ◽

Rate Estimation

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ESR dating of elephant teeth and radiation dose rate estimation in soil

International Journal of Radiation Applications and Instrumentation Part A Applied Radiation and Isotopes ◽

10.1016/0883-2889(89)90063-4 ◽

1989 ◽

Vol 40 (10-12) ◽

pp. 1199-1202 ◽

Cited By ~ 6

Author(s):

Tai Soo Chong ◽

Hiroyuki Ohta ◽

Yoshiyuki Nakashima ◽

Takao Iida ◽

Kengo Ieda ◽

...

Keyword(s):

Radiation Dose ◽

Dose Rate ◽

Esr Dating ◽

Radiation Dose Rate ◽

Rate Estimation

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Reevaluation of Th and U concentrations in marine sediment reference materials using isotope dilution MC-ICP-MS: towards the analytical improvements in dose rate estimation for luminescence dating

Geosciences Journal ◽

10.1007/s12303-013-0023-1 ◽

2013 ◽

Vol 17 (2) ◽

pp. 123-127 ◽

Cited By ~ 1

Author(s):

Jeong-Heon Choi ◽

Jong-Sik Ryu ◽

Hyung Seon Shin ◽

Jeongmin Kim ◽

Chang-sik Cheong

Keyword(s):

Dose Rate ◽

Reference Materials ◽

Marine Sediment ◽

Isotope Dilution ◽

Luminescence Dating ◽

Rate Estimation ◽

Icp Ms

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Thoron emanation and exhalation of Slovenian soils determined by a PIC detector-equipped radon monitor

Nukleonika ◽

10.1515/nuka-2016-0063 ◽

2016 ◽

Vol 61 (3) ◽

pp. 379-384 ◽

Cited By ~ 8

Author(s):

Jácint Jónás ◽

Zoltán Sas ◽

Janja Vaupotic ◽

Erika Kocsis ◽

János Somlai ◽

...

Keyword(s):

Health Risk ◽

Gamma Spectrometry ◽

Half Life ◽

Activity Concentration ◽

Soil Samples ◽

Radon Emanation ◽

Decay Products ◽

Radon Monitor ◽

Hpge Gamma Spectrometry ◽

Chamber Technique

Abstract The health risk from thoron (Rn-220) is usually ignored owing to its short half-life (55.6 s), but the generated thoron decay products can cause a significant dose contribution. In this study, altogether 51 Slovenian soil samples were investigated using an accumulation chamber technique to obtain information about thoron exhalation features. The obtained (massic) thoron exhalation results varied between 6.9 and 149 mBq·kg−1·s−1 (average: 55.2 mBq·kg−1·s−1). The Th-232 content was determined using HPGe gamma spectrometry. The Th-232 activity concentration ranged between 9.3 and 161.7 Bq·kg−1 (average: 64.6 Bq·kg−1). The thoron emanation features were also calculated from the obtained results (2.9 to 21.2% with an average of 8.6%). The thoron exhalation and emanation properties were compared with the radon exhalation and emanation features determined in a previous study. It was found that there was no correlation between the radon and thoron emanation features, according to the obtained data. This can be explained by the different Ra-224 and Ra-226 distributions in the soil grains. As a result, the thoron emanation factor cannot be predicted from radon emanation and vice versa.

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