Electret Ion Chambers for Characterizing Indoor, Outdoor, Geologic and Other Sources of Radon
Payasada Kotrappa
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An Electret Passive Environmental 222Rn Monitor Based on Ionization Measurement
Payasada Kotrappa, J.C. Dempsey, J.R. Hickey, L.R. Stieff
A Practical E-PERM® (Electret Passive Environmental Radon Monitor) System for Indoor 222Rn Measurement
Payasada Kotrappa, J.C. Dempsey, R.W. Hickey, L.R. Stieff
Elevation Correction Factors for E-PERM® Radon Monitors
Payasada Kotrappa, L.R. Stieff
Electret Ion Chamber Radon Monitors Measure Dissolved 222Rn in Water
Payasada Kotrappa, W.A. Jester
Field Test of Electret Ion Chambers for Environmental Monitoring
R.A. Fjeld, K.J. Montague, M.H. Haapala, P. Kotrappa
Long Term Stability of Electrets used in Electret Ion Chambers
Payasada Kotrappa
Uncertainties Evaluation for Electret Based Devices used in Radon Detection
M. Caresana, F. Campi, M. Ferrarini, L. Gariati, A. Porta
Gamma Table
Kenneth T. Bogen
An Advanced E-PERM® System for Simultaneous Measurement of Concentrations of Radon Gas, Radon Progeny, Equilibrium Ratio and Unattached Radon Progeny
Payasada Kotrappa, F.R. Stieff, L.R. Stieff
Intercomparison of Radon and Radon Decay Product Measurements in an Underground Mine and EPA Radon Laboratory
G. Budd, R. Hopper, E. Braganza, M. Ronca-Battista, F. Steinhausler, P. Stegner
Attenuation of Thoron in Tyvek® Membranes
Payasada Kotrappa, Lorin Stieff, Frederick Stieff
Measurement of Radon in Natural Gas and in Propane Using Electret Ion Chambers
Payasada Kotrappa, Michael E. Kitto, Lorin Stieff, Frederick Stieff
Radon Flux Monitor For In Situ Measurement of Granite and Concrete Surfaces
Payasada Kotrappa, F.R. Stieff, Daniel J. Steck
Uranium Prospecting for Accurate Time-Efficient Surveys of Radon Emissions in Air and Water, with a Comparison to Earlier Radon and Helium Surveys
John D. Charlton, Payasada Kotrappa
Quality Study of Electret Radon Flux Monitors by an "In Situ" Intercomparison Campaign in Spain
C. Grossi, A. Vargas, D. Arnold
A Preliminary Comparison of Radon Surface Flux Measurement Using Large Area Activated Charcoal Canisters (LAACC) and Electret Ion Chambers (EIC)
J. Rechcigl, I. Alcordo, C. Roessler, R. Littell, H. Keaton, J. Williamson, L.R. Stieff, P. Kotrappa, G. Whitney
Assessment of the E-PERM® Radon-in-Water Measurement Kit
M. Kitto, D. Haines, E. Fielman, T. Menia, A. Bari
NAS Report and EPA's Approach to Setting Limits for Radon in Drinking Water
NAS Report / U.S. EPA
Initial EPA Perspectives on NAS Report: "Risk Assessment of Radon in Drinking Water"
U.S. Environmental Protection Agency
The Use of Barrier Bags with Radon Detectors
A. Stieff, P. Kotrappa, F.R. Stieff
Small Volume (53 ml) EIC With On/Off Mechanism
F.R. Stieff, P. Kotrappa
Electret Ion Chamber-Based Passive Radon-Thoron Discriminative Monitors
P. Kotrappa, D. Steck
Measurement of Indoor and Outdoor Radon Concentrations During Superstorm Sandy
P. Kotrappa, P. Paul, A. Stieff, F.R. Stieff
Short-Term Electret Ion Chamber "Blind" Testing Program
R.K. Lewis
Influence of Environmental Changes on Integrating Radon Detectors: Results of an Intercomparison Exercise
A. Vargas, X. Ortega
Field Comparison of Commercially Available Short-Term Radon Detectors
K. Sun, M. Majdan, D. Field, R.W. Field
Blind Testing of Commercially Available Short-Term Radon Detectors
K. Sun, G. Budd, S. McLemore, R.W. Field
A Test of Radon Service Providers Available on the Internet
J. Chen, R. Falcomer, L. Bergman, J. Wierdsma, J. Ly
Evaluation Report: EPA Does Not Provide Oversight of Radon Testing Accuracy and Reliability
U.S. Environmental Protection Agency
Technical Note: Inherent Voltage Discharge in LT Electrets (16-May-2018)
Rad Elec Inc.
Optimized 90 Day Long-Term EIC Monitor (LMT-OO)
Payasada Kotrappa, Lorin Stieff, Frederick Stieff
New S-Chamber Mid-Term Electrets: Experimental Characterization and Uncertainty Evaluation
Gabriele Zorloni, Francesca Tugnoli, Luisella Garlati, Marco Caresana
Application of NIST 222Rn Emanation Standards for Calibrating 222Rn Monitors
Payasada Kotrappa, L.R. Stieff
Characterization and Use of an Accumulating Type of Radon Test Chamber
Payasada Kotrappa, Frederick Stieff
An E-RPISU, A New Instrument for Measurement of Radon Progeny Concentration in Air
Payasada Kotrappa, Frederick Stieff
