Explanipedia

Assessment of Rare Earth Element Potential in Gulf Coast Coals and Coal Ash Open

Bridget R. Scanlon, R. C. Reedy, Brent A. Elliott, James C. Hower, J. Richard Kyle , et al. · 2025

United States heavy reliance on imports of critical minerals (CMs), including rare earth elements (REEs), underscores the importance of development of domestic sources. The study objective was to quantify CM and REE concentrations in coals…

Multidecadal drought impacts on the Lower Colorado Basin with implications for future management Open

Bridget R. Scanlon, Donald R. Pool, Ashraf Rateb, Brian D. Conway, K. Sørensen , et al. · 2025

Overallocation of Colorado River water and groundwater alongside multidecadal drought underscore the need to understand water-resource dynamics. Here we assess water-storage variations using satellites, regional modeling, and monitoring to…

Coal ash resources and potential for rare earth element production in the United States Open

R. C. Reedy, Bridget R. Scanlon, Davin A. Bagdonas, James C. Hower, Dennis James , et al. · 2024

The renewable energy industry is heavily reliant on rare earth elements, underscoring the need to develop resources and production. The objective of this work was to estimate coal ash resources and potential for extraction of rare earth el…

Planetary skin games Open

D. T. Vaniman, R. C. Reedy · 2024

An informal review of techniques for analysis of meteorites and materials from the lunar surface is presented. Attention is given to problems associated with the production rates of cosmogenic nuclides.

Surface chemistry of selected lunar regions. [Th, K, Fe, Mg, and Ti] Open

M. J. Bielefeld, R. C. Reedy, A. E. Metzger, J. I. Trombka, J. R. Arnold · 2024

A completely new analysis has been carried out on the data from the Apollo 15 and 16 ..gamma.. ray spectrometer experiments. The components of the continuum background have been estimated. The elements Th, K, Fe and Mg give useful results;…

Cosmic-ray exposure records and origins of meteorites Open

R. C. Reedy · 2024

The cosmic-ray records of meteorites are used to infer much about their origins and recent histories. The methods used to interpret meteorites' cosmic-ray records, especially identifying simple or complex exposure histories, often are inad…

ACTI - An MCNP Data Library for Prompt Gamma-Ray Spectroscopy. Open

S.C. Frankle, R. C. Reedy, P. G. Young · 2024

Prompt gamma-ray spectroscopy is used in a wide variety of applications for determining material compositions. High-quality photon-production data from thermal-neutron capture reactions are essential for these applications. Radiation trans…

Drinking water quality and social vulnerability linkages at the system level in the United States Open

Bridget R. Scanlon, R. C. Reedy, Sarah Fakhreddine, Qian Yang, Gregory Pierce · 2023

Growing recognition of water quality concerns, particularly in socially vulnerable communities in the United States, has prompted recent policies and investments to improve drinking water system performance. Current environmental justice t…

Distribution of rare earth and other critical elements in lignites from the Eocene Jackson Group, Texas Open

James C. Hower, Peter D. Warwick, Bridget R. Scanlon, R. C. Reedy, Tristán Childress · 2023

Coal is increasingly evaluated as a source of rare earth elements (REEs) in the United States to address the overreliance on imported REEs. The objective of this study was to assess the distribution of REEs in lignites from selected mining…

Author Correction: Global water resources and the role of groundwater in a resilient water future Open

Bridget R. Scanlon, Sarah Fakhreddine, Ashraf Rateb, Inge de Graaf, J. S. Famiglietti , et al. · 2023

Global water resources and the role of groundwater in a resilient water future Open

Bridget R. Scanlon, Sarah Fakhreddine, Ashraf Rateb, Inge de Graaf, J. S. Famiglietti , et al. · 2023

Reactive codoping of GaAlInP compound semiconductors Open

Mark Cooper Hanna, R. C. Reedy · 2023

A GaAlInP compound semiconductor and a method of producing a GaAlInP compound semiconductor are provided. The apparatus and method comprises a GaAs crystal substrate in a metal organic vapor deposition reactor. Al, Ga, In vapors are prepar…

Coal Ash Resources and Potential for Rare Earth Element Production Open

R. C. Reedy, Bridget R. Scanlon, Davin A. Bagdonas, James C. Hower, Dennis James , et al. · 2023

Geochemical mapping of the Moon by orbital gamma-ray spectroscopy Open

R. C. Reedy · 2022

Chemical compositions of the surfaces of the moon and certain planetary bodies can be determined by orbital ..gamma..-ray spectroscopy. The major sources of ..gamma..-ray lines (and of radionuclides) in the moon are the decay of the primor…

Preliminary design and performance of an advanced gamma ray spectrometer for future orbiter missions Open

A. E. Metzger, Richard H. Parker, J. R. Arnold, R. C. Reedy, J. I. Trombka · 2022

A knowledge of the composition of planets, satellites, and asteroids is of primary importance in understanding the formation and evolution of the solar system. Gamma-ray spectroscopy is capable of measuring the composition of meter-depth s…

InSAR Reveals Complex Surface Deformation Patterns Over an 80,000 km2Oil‐Producing Region in the Permian Basin Open

Scott Staniewicz, Jingyi Chen, Hunjoo P. Lee, Jon E. Olson, Alexandros Savvaidis , et al. · 2020

Here we used Sentinel‐1 interferometric synthetic aperture radar (InSAR) data acquired between November 2014 to January 2019 to map how the basin's surface has deformed in response to fluid injection and extraction. While our stacking appr…

Datasets associated with investigating the potential for beneficial reuse of produced water from oil and gas extraction outside of the energy sector Open

Bridget R. Scanlon, R. C. Reedy, Pei Xu, Mark A. Engle, Jean‐Philippe Nicot , et al. · 2020

The data in this report are associated with https://doi.org/10.1016/j.scitotenv.2020.137085[4] and include data on water volumes and water quality related to the major unconventional oil and gas plays in the U.S. The data include volumes o…

Can we beneficially reuse produced water from oil and gas extraction in the U.S.? Open

Bridget R. Scanlon, R. C. Reedy, Pei Xu, Mark A. Engle, Jean‐Philippe Nicot , et al. · 2020

There is increasing interest in beneficial uses of large volumes of wastewater co-produced with oil and gas extraction (produced water, PW) because of water scarcity, potential subsurface disposal limitations, and regional linkages to indu…

Tracking Seasonal Fluctuations in Land Water Storage Using Global Models and GRACE Satellites Open

Bridget R. Scanlon, Z. Zhang, Ashraf Rateb, Alexander Y. Sun, D. N. Wiese , et al. · 2019

Seasonal water storage fluctuations are critical for evaluating water scarcity linked to climate forcing and human intervention. Here we compare seasonal changes in land total water storage anomalies using seven global hydrologic and land …

Global models underestimate large decadal declining and rising water storage trends relative to GRACE satellite data Open

Bridget R. Scanlon, Zizhan Zhang, Himanshu Save, Alexander Y. Sun, Hannes Müller Schmied , et al. · 2018

Significance We increasingly rely on global models to project impacts of humans and climate on water resources. How reliable are these models? While past model intercomparison projects focused on water fluxes, we provide here the first com…

Changing Confidence in the News Media: Political Polarization on the Rise Open

R. C. Reedy · 2018

A large number of Americans no longer have confidence in the news medias ability to report the news accurately. With ongoing anti-media rhetoric and presence of "fake news" in the political climate, Americans remain divided on the topic of…

Characterization of Silicon-Film(TM) Sheet Material Open

J.A. Rand, George Rozgonyi, Ralf Jonczyk, Sarbajit Datta, Jinggang Lu , et al. · 2017

The Silicon-Film(TM) process produces a continuous sheet of polycrystalline silicon for use in the production of solar cells. This is a relatively new material for the industry considering the growth method, the relatively high level of im…

Optimization on Temperatures of Filament and Substrate for High-Quality Narrow Gap a-Si1-xGex:H Alloys Grown by Hot-Wire CVD Open

Yunpeng Xu, B. P. Nelson, D. L. Williamson, L. M. Gedvilas, R. C. Reedy , et al. · 2017

We improve narrow-bandgap (1.2< ETauc< 1.3 eV) amorphous silicon germanium (a-Si1-xGex:H) alloys grown by hot-wire chemical vapor deposition (HWCVD) by lowering both substrate and filament temperatures. We grew two series of films using a …

Influence of Filament and Substrate Temperatures on Structural and Optoelectronic Properties of Narrow Gap a-SiGe:H Alloys Deposited by Hot-Wire CVD: Preprint Open

Yi‐Jun Xu, B. P. Nelson, L. M. Gedvilas, R. C. Reedy, D. L. Williamson · 2017

We have found that narrow-bandgap--1.25< Tauc Gap< 1.50 eV--amorphous silicon germanium (a-SiGe:H) alloys grown by hot-wire chemical vapor deposition (CVD) can be improved by lowering both substrate and filament temperatures. We systematic…

Rapid Thermal Annealing of HWCVD a-Si:H Films: The Effect of the Film Hydrogen Content on the Crystallization Kinetics, Surface Morphology, and Grain Growth Open

A. H. Mahan, R. C. Reedy, David S. Ginley, Banasri Roy, Dennis W. Readey · 2017

We report the effect of the hydrogen (H) content (CH) on the crystallization kinetics, surface morphology and grain growth for Hot Wire CVD a-Si:H films containing 12.5 and 2.7 at.% H which are crystallized by rapid thermal anneal (RTA). F…

Surfaces and interfaces governing the OMVPE growth of APD-free GaP on AsH3-cleaned vicinal Si(100) Open

William E. McMahon, Emily L. Warren, A. Kibbler, Ryan M. France, Andrew G. Norman , et al. · 2016

Corrigendum: Enhancing drought resilience with conjunctive use and managed aquifer recharge in California and Arizona (2016 Environ. Res. Lett. 11 035013) Open

Bridget R. Scanlon, R. C. Reedy, Claudia C. Faunt, Donald R. Pool, Kristine Uhlman · 2016

Enhancing drought resilience with conjunctive use and managed aquifer recharge in California and Arizona Open

Bridget R. Scanlon, R. C. Reedy, Claudia C. Faunt, Donald R. Pool, Kristine Uhlman · 2016

Projected longer-term droughts and intense floods underscore the need to store more water to manage climate extremes. Here we show how depleted aquifers have been used to store water by substituting surface water use for groundwater pumpag…

Hydrologic implications of GRACE satellite data in the Colorado River Basin Open

Bridget R. Scanlon, Zizhan Zhang, R. C. Reedy, Donald R. Pool, Himanshu Save , et al. · 2015

Use of GRACE (Gravity Recovery and Climate Experiment) satellites for assessing global water resources is rapidly expanding. Here we advance application of GRACE satellites by reconstructing long‐term total water storage (TWS) changes from…

Tunnel oxide passivated contacts formed by ion implantation for applications in silicon solar cells Open

Christian Reichel, Frank Feldmann, Ralph Müller, R. C. Reedy, Benjamin G. Lee , et al. · 2015

Passivated contacts (poly-Si/SiOx/c-Si) doped by shallow ion implantation are an appealing technology for high efficiency silicon solar cells, especially for interdigitated back contact (IBC) solar cells where a masked ion implantation fac…

R. C. Reedy YOU? Author Swipe