National Synchrotron Light Source II
NSLS-II is a state-of-the-art 3 GeV electron storage ring. The facility offers scientific and industrial researchers an array of beamlines with x-ray, ultraviolet, and infrared light to enable discoveries in clean and affordable energy, high-temperature superconductivity, molecular electronics, and more. Overview »
The next deadline for NSLS-II beam time proposals and beam time requests is January 31, 2020. | Submission Details
Become a Facility User
Beamlines at the National Synchrotron Light Source II are open to academic and industrial users for scientific research. All research proposals are subjected to peer review and ranked against competing proposals based on scientific merit.
NSLS-II Beamlines
NSLS-II’s beamlines and experimental stations offer unique, cutting-edge research tools for a wide variety of scientific areas. All beamlines are organized into six science programs, based on the research capabilities and expertise they offer.
Beamlines are organized into six scientific programs, based on the research techniques they offer.
Hard X-ray Spectroscopy
Complex Scattering
Diffraction & In-Situ Scattering
Imaging and Microscopy
Soft X-ray Scattering & Spectroscopy
Structural Biology
Seminars
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FEB
13
Thursday
NSLS-II Colloquium
"Subsurface Landscapes of Oxidation and Reaction in the Critical Zone"
Presented by Susan Brantley, Pennsylvania State University, PA
4 pm, Large Seminar Room, Bldg. 510
Thursday, February 13, 2020, 4:00 pm
Hosted by: John Hill
The globally ubiquitous mineral pyrite oxidizes even at low oxygen concentrations. As the most common crustal sulfide, pyrite reactivity impacts sulfur, iron, oxygen, and carbon budgets globally. We discovered that pyrite oxidizes completely at tens of meters depth even in low-porosity rocks in catchments in humid climates. As erosion exposes the pyrite to near-surface conditions in low porosity rocks, pore and fracture development is the main control on the rate of oxidative weathering. Between fractures, oxygen diffusion limits the weathering and oxidation is inferred to be largely abiotic because bacteria cannot enter rock matrix pores. Oxygen concentrations and erosion rates together can explain pyrite-derived sulfate fluxes in rivers to the ocean and may account for the presence or absence of pyrite in detrital sediments over Earth history.
