Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Opportunities at light source and neutron facilities

15.06.2010
Findings released at the annual Goldschmidt Conference at the University of Tennessee, Knoxville

New intense sources of radiation at national facilities in Chicago, New York, and Tennessee coupled with the next generation of sensitive detectors are allowing geochemists like John Parise to gather images and data on minerals in one second that would take years of equivalent exposure on conventional laboratory x-ray facilities.

John Parise, professor, mineralogist and solid-state chemist at Stony Brook University, New York, discussed this and other new light source systems available to geochemists today at this year's Goldschmidt Conference, hosted by the University of Tennessee, Knoxville, and Oak Ridge National Laboratory.

The enhanced power of x-rays and pulsed neutrons -- especially at the new Spallation Neutron Source facility at Oak Ridge National Laboratory -- give geochemists more sensitive tools to detect, characterize and understand the mineral components and the contaminants they absorb or release. Identifying these minerals and how they change with varying conditions such as temperature, relative humidity and irradiation hold the key to understanding the evolution of planetary surfaces, including that of our Earth.

Parise and his colleagues have been studying ferrihydrite, a common iron oxide composed of minute crystals. The structure of ferrihydrite is impossible to get right by studying it with conventional laboratory x-ray techniques. However, by using high-energy x-rays created in a synchrotron storage ring accelerating electrons, the research team has been able to identify the atomic arrangement of the ferrihydrite crystals as a relative of aluminum oxyhydroxide. The discovery of this basic structure has enabled Parise to show how environmental contaminants attach to the surface of this iron oxide.

"The need to look at materials in new ways has changed the science culture for some scientists who use these sources -- the very way they do science," Parise said. He discussed the importance of accessibility and continued development of light source and neutron facilities at the conference.

This year's Goldschmidt Conference is being held in Knoxville, Tenn., during the week of June 13-18. Several thousand geochemists from around the world are presenting new scientific discoveries dealing with the Earth, energy and the environment. The conference is named for Victor Goldschmidt (1888-1947), the Swiss-Norwegian scientist who was the father of geochemistry.

Whitney Holmes | EurekAlert!
Further information:
http://www.utk.edu

More articles from Materials Sciences:

nachricht Using a simple, scalable method, a material that can be used as a sensor is developed
15.02.2017 | University of the Basque Country

nachricht New mechanical metamaterials can block symmetry of motion, findings suggest
14.02.2017 | University of Texas at Austin

All articles from Materials Sciences >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Breakthrough with a chain of gold atoms

In the field of nanoscience, an international team of physicists with participants from Konstanz has achieved a breakthrough in understanding heat transport

In the field of nanoscience, an international team of physicists with participants from Konstanz has achieved a breakthrough in understanding heat transport

Im Focus: DNA repair: a new letter in the cell alphabet

Results reveal how discoveries may be hidden in scientific “blind spots”

Cells need to repair damaged DNA in our genes to prevent the development of cancer and other diseases. Our cells therefore activate and send “repair-proteins”...

Im Focus: Dresdner scientists print tomorrow’s world

The Fraunhofer IWS Dresden and Technische Universität Dresden inaugurated their jointly operated Center for Additive Manufacturing Dresden (AMCD) with a festive ceremony on February 7, 2017. Scientists from various disciplines perform research on materials, additive manufacturing processes and innovative technologies, which build up components in a layer by layer process. This technology opens up new horizons for component design and combinations of functions. For example during fabrication, electrical conductors and sensors are already able to be additively manufactured into components. They provide information about stress conditions of a product during operation.

The 3D-printing technology, or additive manufacturing as it is often called, has long made the step out of scientific research laboratories into industrial...

Im Focus: Mimicking nature's cellular architectures via 3-D printing

Research offers new level of control over the structure of 3-D printed materials

Nature does amazing things with limited design materials. Grass, for example, can support its own weight, resist strong wind loads, and recover after being...

Im Focus: Three Magnetic States for Each Hole

Nanometer-scale magnetic perforated grids could create new possibilities for computing. Together with international colleagues, scientists from the Helmholtz Zentrum Dresden-Rossendorf (HZDR) have shown how a cobalt grid can be reliably programmed at room temperature. In addition they discovered that for every hole ("antidot") three magnetic states can be configured. The results have been published in the journal "Scientific Reports".

Physicist Dr. Rantej Bali from the HZDR, together with scientists from Singapore and Australia, designed a special grid structure in a thin layer of cobalt in...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Booth and panel discussion – The Lindau Nobel Laureate Meetings at the AAAS 2017 Annual Meeting

13.02.2017 | Event News

Complex Loading versus Hidden Reserves

10.02.2017 | Event News

International Conference on Crystal Growth in Freiburg

09.02.2017 | Event News

 
Latest News

Biocompatible 3-D tracking system has potential to improve robot-assisted surgery

17.02.2017 | Medical Engineering

Real-time MRI analysis powered by supercomputers

17.02.2017 | Medical Engineering

Antibiotic effective against drug-resistant bacteria in pediatric skin infections

17.02.2017 | Health and Medicine

VideoLinks
B2B-VideoLinks
More VideoLinks >>>