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  1. Article: Large-Scale, Precision Xenon Doping of Liquid Argon

    McFadden, N. / Elliott, S. R. / Gold, M. / Fields, D. E. / Rielage, K. / Massarczyk, R. / Gibbons, R.

    Abstract: The detection of scintillation light from liquid argon is an experimental technique key to a number of current and future nuclear/particle physics experiments, such as neutrino physics, neutrinoless double beta decay and dark matter searches. Although ... ...

    Abstract The detection of scintillation light from liquid argon is an experimental technique key to a number of current and future nuclear/particle physics experiments, such as neutrino physics, neutrinoless double beta decay and dark matter searches. Although the idea of adding small quantities of xenon (doping) to enhance the light yield has attracted considerable interest, this technique has never been demonstrated at the necessary scale. Here we report on xenon doping in a 100~l crogenic vessel. We observed an increase in light yield by a factor of 1.81$\pm$0.04 at a dopant concentration of 10~ppm, consistent with a Geant4 prediction of 1.83$\pm$0.02. We determine a lower limit on the attenuation length of $3$~m at a concentration of 10~ppm
    Keywords covid19
    Publisher ArXiv
    Document type Article
    Database COVID19

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  2. Article: Computation of radionuclide particulate finite area fugitive source strengths.

    Fields, D E

    Health physics

    1983  Volume 44, Issue 6, Page(s) 653–655

    MeSH term(s) Air/analysis ; Air Movements ; Air Pollutants/analysis ; Air Pollutants, Radioactive/analysis ; Atmosphere ; Models, Theoretical ; Wind
    Chemical Substances Air Pollutants ; Air Pollutants, Radioactive
    Language English
    Publishing date 1983-06
    Publishing country United States
    Document type Journal Article ; Research Support, U.S. Gov't, Non-P.H.S.
    ZDB-ID 2406-5
    ISSN 1538-5159 ; 0017-9078
    ISSN (online) 1538-5159
    ISSN 0017-9078
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article: Measurements of airborne radioactive emissions from nuclear power plants and their quality control in the Federal Republic of Germany

    Fields, D. E.

    ISH-Heft

    1985  , Issue 75, Page(s) 1–34

    Institution Ingolstaedter Landstr. 1, D-8042 Neuherberg b/Muenchen Institut fuer Strahlenhygiene des Bundesgesundheitsamtes
    Keywords Kernenergieerzeugung ; Luftemission ; Stoff ; Radioaktivitaet ; Isotop ; Messen ; Qualitaetskontrolle ; Bundesrepublik Deutschland ; Edelgasgruppe ; Jod ; Kohle ; Deuterium
    Language English
    Document type Article
    Database Social Medicine (SOMED)

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  4. Article: A critical approach to the calibration of a watershed model

    Jacomino, V.M.F / Fields, D.E

    Journal of the American Water Resources Association / Feb 1997. v. 33 (1)

    1997  

    Abstract: A complex watershed-scale water quality simulation model, the Hydrological Simulation Program-FORTRAN (HSPF) model, was calibrated for a 16 km2 catchment. The simulation step size was 0.33 hours with predicted and recorded hydrologic flows compared on an ...

    Abstract A complex watershed-scale water quality simulation model, the Hydrological Simulation Program-FORTRAN (HSPF) model, was calibrated for a 16 km2 catchment. The simulation step size was 0.33 hours with predicted and recorded hydrologic flows compared on an annual and monthly basis during a total calibration period of four years. Unguided numerical optimization when applied alone did not yield a model parameter set with acceptable predictive capability; instead, it was necessary to apply a critical process that included sensitivity analysis, numerical optimization, and testing of derived model parameter sets to evaluate their performance for periods other than those for which they were determined. Using this critical calibration process, the model was proven to have significant predictive capability. Numerical optimization is an aid for model calibration, but it must not be used blindly.
    Keywords watersheds ; watershed hydrology ; water quality ; calibration ; simulation models ; optimization
    Language English
    Dates of publication 1997-02
    Size p. 142-154.
    Document type Article
    ISSN 1093-474X
    Database NAL-Catalogue (AGRICOLA)

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  5. Article: Experimental measurement of angular dependency of external dose from 40 keV x-ray photons.

    Yalçintaş, M G / Fields, D E

    Health physics

    1989  Volume 57, Issue 5, Page(s) 809–816

    MeSH term(s) Models, Structural ; Radiation ; Radiation Dosage ; Thermoluminescent Dosimetry
    Language English
    Publishing date 1989-11
    Publishing country United States
    Document type Journal Article ; Research Support, U.S. Gov't, Non-P.H.S.
    ZDB-ID 2406-5
    ISSN 1538-5159 ; 0017-9078
    ISSN (online) 1538-5159
    ISSN 0017-9078
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Book: Measurements of airborne radioactive emissions from nuclear power plants and their quality control in the Federal Republic of Germany

    Winkelmann, I / Fields, D. E

    (ISH-Heft ; 75)

    1985  

    Institution Institut für Strahlenhygiene, Bundesgesundheitsamt, Neuherberg
    Author's details I. Winkelmann; D. E. Fields. Institut für Strahlenhygiene, Bundesgesundheitsamt, Neuherberg
    Series title ISH-Heft ; 75
    Language English
    Size 34 S
    Publishing place Neuherberg
    Document type Book
    ISBN 3924403619 ; 9783924403614
    Database Max Rubner-Institute, Federal Research Institute of Nutrition and Food

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  7. Book: Measurements of airborne radioactive emissions from nuclear power plants and their quality control in the Federal Republic of Germany

    Winkelmann, I / Fields, D. E

    (ISH-Heft ; 75)

    1985  

    Institution Institut für Strahlenhygiene, Bundesgesundheitsamt, Neuherberg
    Author's details I. Winkelmann; D. E. Fields. Institut für Strahlenhygiene, Bundesgesundheitsamt, Neuherberg
    Series title ISH-Heft ; 75
    Language English
    Size 34 S
    Publishing place Neuherberg
    Document type Book
    ISBN 3924403619 ; 9783924403614
    Database Library catalogue of the German National Library of Science and Technology (TIB), Hannover

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  8. Article: Determination of a polar population distribution from a county oriented data base.

    Fields, D E / Little, C A

    Health physics

    1981  Volume 41, Issue 3, Page(s) 551–554

    MeSH term(s) Computers ; Environmental Pollution ; Epidemiologic Methods
    Language English
    Publishing date 1981-09
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2406-5
    ISSN 1538-5159 ; 0017-9078
    ISSN (online) 1538-5159
    ISSN 0017-9078
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article: Agricultural factors affecting the radionuclide foodchain pathway: green forage consumption of dairy cows.

    Shor, R W / Fields, D E

    Health physics

    1980  Volume 39, Issue 2, Page(s) 325–332

    MeSH term(s) Animal Feed/analysis ; Animals ; Cattle ; Food Contamination, Radioactive/analysis ; Milk/analysis ; Radiation Dosage ; Radioisotopes/analysis ; United States
    Chemical Substances Radioisotopes
    Language English
    Publishing date 1980-08
    Publishing country United States
    Document type Journal Article ; Research Support, U.S. Gov't, Non-P.H.S.
    ZDB-ID 2406-5
    ISSN 1538-5159 ; 0017-9078
    ISSN (online) 1538-5159
    ISSN 0017-9078
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article: Examination of the uncertainty in air concentration predictions using Hanford field data.

    Miller, C W / Fields, D E / Cotter, S J

    Health physics

    1988  Volume 55, Issue 2, Page(s) 443–450

    Abstract: The accuracy of an environmental transport model is best determined by comparing model predictions with environmental measurements made under conditions similar to those assumed by the model, a process commonly referred to as model validation. Over the ... ...

    Abstract The accuracy of an environmental transport model is best determined by comparing model predictions with environmental measurements made under conditions similar to those assumed by the model, a process commonly referred to as model validation. Over the past several years, we have done a variety of validation studies with the popular Gaussian plume atmospheric dispersion model using data from tests conducted on the Hanford site. Data for short-term releases of small particles for a range of release heights from surface level to 111 m have been used. Downwind distances examined have ranged from a few hundred meters to 12.8 km, depending on the particular data used. Measured and predicted ground-level centerline, crosswind-integrated, and 22.5 degrees sector-averaged air concentrations have been compared. Up to six different sets of atmospheric dispersion parameters and three different atmospheric stability class specification schemes have been examined. Overall, dispersion parameters based on measurements made near Jülich, Federal Republic of Germany, give the best comparisons between observed and predicted air concentrations. The commonly used vertical temperature gradient method for determining atmospheric stability class consistently gives poor results. The accuracy of air concentration predictions improves when dry deposition processes are included in the model. Further validation studies using various Hanford data sets are planned.
    MeSH term(s) Air Pollutants/analysis ; Air Pollutants, Radioactive/analysis ; Radiation Monitoring/methods ; Statistics as Topic
    Chemical Substances Air Pollutants ; Air Pollutants, Radioactive
    Language English
    Publishing date 1988-08
    Publishing country United States
    Document type Journal Article ; Research Support, U.S. Gov't, Non-P.H.S.
    ZDB-ID 2406-5
    ISSN 1538-5159 ; 0017-9078
    ISSN (online) 1538-5159
    ISSN 0017-9078
    DOI 10.1097/00004032-198808000-00045
    Database MEDical Literature Analysis and Retrieval System OnLINE

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