Navigation Links
Searching for the solar system's chemical recipe
Date:2/20/2013

By studying the origins of different isotope ratios among the elements that make up today's smorgasbord of planets, moons, comets, asteroids, and interplanetary ice and dust, Mark Thiemens and his colleagues hope to learn how our solar system evolved. Thiemens, Dean of the Division of Physical Sciences at the University of California, San Diego, has worked on this problem for over three decades.

In recent years his team has found the Chemical Dynamics Beamline of the Advanced Light Source (ALS) at the U.S. Department of Energy's Lawrence Berkeley National Laboratory (Berkeley Lab) to be an invaluable tool for examining how photochemistry determines the basic ingredients in the solar system recipe.

"Mark and his colleagues Subrata Chakraborty and Teresa Jackson wanted to know if photochemistry could explain some of the differences in isotope ratios between Earth and what's found in meteorites and interplanetary dust particles," says Musahid (Musa) Ahmed of Berkeley Lab's Chemical Sciences Division, a scientist at the Chemical Dynamics Beamline who works with the UC San Diego team. "They needed a source of ultraviolet light powerful enough to dissociate gas molecules like carbon monoxide, hydrogen sulfide, and nitrogen. That's us: our beamline basically provides information about gas-phase photodynamics."

Beamline 9.0.2, the Chemical Dynamics Beamline, generates intense beams of VUV vacuum ultraviolet light in the 40 to 165-nanometer wavelength range (a nanometer is a billionth of a meter) which can be precisely tuned to mimic radiation from the protosun when the solar system was forming.

Oxygen and sulfur are the third and tenth most abundant elements in the solar system and two of the most important for life. Their isotopic differences from Earth's are clearly seen in many different kinds of meteorites. Thiemens's team first used beamline 9.0.2 in 2008 to test a theory, called "self-shielding," about why oxygen-16 is
'/>"/>

Contact: Paul Preuss
paul_preuss@lbl.gov
510-486-6249
DOE/Lawrence Berkeley National Laboratory
Source:Eurekalert  

Page: 1 2 3 4 5

Related biology news :

1. EU project: Searching for exotics in the shrimp nets
2. Searching for the origin of muscles
3. Searching genomic data faster
4. UTSA anthropologist honored for contributions researching primates in Africa
5. A new dimension for solar energy
6. Folding light: Wrinkles and twists boost power from solar panels
7. Climatic effects of a solar minimum
8. Bay Area PV Consortium announces $7.5 million in grants to lower the cost of large-scale solar
9. Weizmann Institute solar technology to convert greenhouse gas into fuel
10. Anti-aging elixir for solar cells
11. ASU awarded $3 million to research solar energy technologies, launch energy Ph.D. program
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Searching for the solar system's chemical recipe
(Date:9/2/2014)... truth; everyone has a tipping point. We all want to ... benefit is great enough. Now, scientists have confirmed the area ... , The result was published online this week in ... honest, even if lying is beneficial," said Lusha Zhu, the ... Virginia Tech Carilion Research Institute , where she works with ...
(Date:9/2/2014)... limestone is well known as a result of ... (for example, Archaeopteryx). Now, for the first time, ... equivalent of these outcrops - discoveries which include ... treader. , Despite the abundance of fossils in ... obtained from the Late Kimmeridgian equivalents of these ...
(Date:9/1/2014)... the U.S. diet showed some modest improvement in the ... in the consumption of unhealthy trans fats, but the ... and the poor. , , An unhealthy diet is ... Eating a healthy diet is an important part of ... trends in diet quality is important because it can ...
Breaking Biology News(10 mins):Scientists find possible neurobiological basis for tradeoff between honesty, self-interest 2Scientists find possible neurobiological basis for tradeoff between honesty, self-interest 3Scientists find possible neurobiological basis for tradeoff between honesty, self-interest 4Exceptionally well preserved insect fossils from the Rhône Valley 2Quality of US diet improves, gap widens for quality between rich and poor 2Quality of US diet improves, gap widens for quality between rich and poor 3
... its prestigious Clinical and Translational Science Award (CTSA) ... the amount of $29 million over the next ... wireless technology and bioinformatics toward individualizing medicine. ... Health and The Scripps Research Institute in partnership ...
... 22, 2013 More accurate and precise assessment of ... a particular gene that are present in a genome, ... cancer and other diseases including autoimmune disorders. However, ... labor intensive, or prohibitively costly, diminishing their effectiveness in ...
... New research shows that in sub-Saharan Africa the virus responsible ... distances and the African buffalo are important natural reservoirs for ... online open-access journal of the American Society for Microbiology, sheds ... 2 emerged in sub-Saharan Africa and identifies patterns of spread ...
Cached Biology News:NIH awards Scripps Translational Science Institute $29 million grant 2NIH awards Scripps Translational Science Institute $29 million grant 3Bio-Rad's Droplet Digital PCR technology highlighted at ASHG Annual Meeting 2Foot and mouth disease in sub-Saharan Africa moves over short distances, wild buffalo are a problem 2
(Date:9/2/2014)... September 02, 2014 Semiconductor industry leader ... Light-based Technologies (IYL 2015) visionary John Dudley were ... the international society for optics and photonics , last ... and Dudley along with other awards announced earlier this ... by James Harrington, during a gala banquet Wednesday evening ...
(Date:9/2/2014)... detailed studies of what happens on the surface of ... other applications. A group of researchers from Lund University ... form across a large number of vertical nanowires, known ... of a cell and its surroundings takes place through ... that holds the cell together and that largely comprises ...
(Date:9/2/2014)... 2, 2014  TransCelerate BioPharma Inc. ("TransCelerate") today ... for protecting personal data in Clinical Study Reports ... others. The document describes an approach to apply ... and other related clinical trial documents, and is ... of the TransCelerate CSR Redaction approach is to ...
(Date:9/2/2014)... SAN DIEGO , Sept. 2, 2014 ... announced that the U.S. Patent and Trademark Office (PTO) ... investigational medication being evaluated for weight loss. NB32 is ... bupropion SR. U.S. Patent No. 8,815,889 claims ... naltrexone and bupropion. The patent expires in 2024. If ...
Breaking Biology Technology:Levinson, Dudley Win SPIE Directors’ and President’s Awards 2Levinson, Dudley Win SPIE Directors’ and President’s Awards 3Levinson, Dudley Win SPIE Directors’ and President’s Awards 4Nano-forests to reveal secrets of cells 2TransCelerate BioPharma Inc. Releases Recommended Approach for Protecting Personal Data in Clinical Study Reports 2TransCelerate BioPharma Inc. Releases Recommended Approach for Protecting Personal Data in Clinical Study Reports 3Orexigen Expands NB32 Intellectual Property Portfolio With New U.S. Patent 2Orexigen Expands NB32 Intellectual Property Portfolio With New U.S. Patent 3Orexigen Expands NB32 Intellectual Property Portfolio With New U.S. Patent 4
... Lumiphore, Inc., a,biotechnology leader in the ... use in high-value applications, announced,that it has ... Inc.,Redwood City, California to apply Lumiphore products ... Under the agreement, Biophor Diagnostics holds the ...
... Inc. (OTC,Bulletin Board: NZYM) announced today the appointment ... on October 1, 2008. Since May,2008, Dr. Farkas ... over 13 years, experience with amino acid derivatives, ... and supply chain,management at Bachem Corporation, Novartis AG ...
... NxStage Medical,Inc. (Nasdaq: NXTM ), a leading manufacturer ... Chief Executive Officer,and Robert S. Brown, Chief Financial Officer, ... on October 6, 2008 at Le Parker,Meridien Hotel in ... Monday, October 6th at,2:30 p.m. ET. To listen to ...
Cached Biology Technology:Lumiphore Partners with Biophor Diagnostics, Inc. to Develop Tests for Drugs of Abuse; Appoints Ibis Biosciences Founder David J. Ecker to Board 2Synthetech Announces New Director of Manufacturing 2NxStage Medical to Present at JMP Securities Healthcare Focus Conference 2
Mouse monoclonal [7E10] to C Peptide ( Abpromise for all tested applications). entrezGeneID: 3630 SwissProtID: P01308...
p38 MAP Kinase gamma Antibody Shipping Temperature: HOT Storage Temperature: -20C...
Chicken polyclonal to HAGH ( Abpromise for all tested applications). Antigen: Synthetic peptide, corresponding to N terminal amino acids 110-260 of Human HAGH. Entrez GeneID: 3029 Swiss ...
...
Biology Products: