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室内222Rn/220Rn子体平衡因子的初步测量
222Rn及其子体 220Rn及其子体 平衡因子
2011/8/22
为了测量222Rn/220Rn子体水平及其与222Rn/220Rn浓度之间的平衡关系，采用连续测氡仪和氡钍子体连续监测仪，选择包头地区几种典型居室和工作场所，对其空气中222Rn/220Rn及其子体浓度进行测量。结果显示，工作场所和居室中222Rn平衡因子均值分别为0.35和0.43，工作场所和居室距墙壁20 cm处220Rn平衡因子均为0.030；室内220Rn平衡当量浓度昼夜变化与222Rn类...
THE CONTENT OF SOME NATURAL RADIOACTIVE ELEMENTS,ESPECIALLY 222Rn,IN SOME POTABLE WATERS IN SWEDEN
NATURAL RADIOACTIVE ELEMENTS Rn POTABLE WATERS IN SWEDEN
2009/10/29
The content of 222Rn in drinking water from 118 wells in southeastern
Sweden has been measured. The radiation dose from 222Rn is completely
dominant in comparison with the dose from other nuclides e...
Evaluation of archived and off-line diagnosed vertical diffusion coefficients from ERA-40 with 222Rn simulations
diffusion coefficients ERA-40 222Rn
2009/3/10
Boundary layer turbulence has a profound influence on the distribution of tracers with sources or sinks at the surface. The 40-year ERA-40 meteorological data set of the European Centre for Medium-ran...
One year of 222Rn concentration in the atmospheric surface layer
222Rn concentration atmospheric surface layer
2009/1/13
A one-year time series of 222Rn measured in a rural area in the North of Italy in 1997 is analyzed. The scope of the investigation is to better understand the behavior of this common atmospheric trace...
Measurements of CO2, its stable isotopes, O2/N2, and 222Rn at Bern, Switzerland
Measurements of CO2 stable isotopes O2/N2 222Rn Switzerland
2009/1/8
A one-year time series of atmospheric CO2 measurements from Bern, Switzerland, is presented. O2/N2 and Ar/N2 ratios as well as stable carbon and oxygen isotopes of CO2 and δ29N2, δ34O2 and δ36Ar were ...
The diurnal evolution of 222Rn and its progeny in the atmospheric boundary layer during the Wangara experiment
222Rn atmospheric boundary layer Wangara experiment
2008/12/19
The diurnal atmospheric boundary layer evolution of the 222Rn decaying family is studied using a state-of-the-art large-eddy simulation model. In particular, a diurnal cycle observed during the Wangar...
Predicting terrestrial 222Rn flux using gamma dose rate as a proxy
222Rn flux gamma dose rate proxy
2008/12/11
222Rn is commonly used as a natural tracer for validating climate models. To improve such models a better source term for 222Rn than currently used is necessary. The aim of this work is to establish a...
Characterization of the 222Rn family turbulent transport in the convective atmospheric boundary layer
222Rn family turbulent transport convective atmospheric boundary layer
2008/12/1
The combined effect of turbulent transport and radioactive decay on the distribution of 222Rn and its progeny in convective atmospheric boundary layers (CBL) is investigated. Large eddy simulation is ...