. Space Industry and Business News .

Proton beam experiments open new areas of research
by Anne M Stark for LLNL
Los Angeles CA (SPX) Dec 07, 2011

The Trident laser at Los Alamos National Laboratory.

By focusing proton beams using high-intensity lasers, a team of scientists have discovered a new way to heat material and create new states of matter in the laboratory.

Researchers from Lawrence Livermore National Laboratory; Jacobs School of Engineering at the University of California, San Diego; Los Alamos National Laboratory; Hemoltz-Zentrum Dresden-Rossendorf of Germany; Technische Universitat Darmstadt of Germany, and General Atomics of San Diego unveiled new findings about how proton beams can be used in myriad applications.

Using the Trident sub-picosecond laser at Los Alamos, the team generated and focused a proton beam using a cone-shaped target. The protons were found to have unexpectedly curved trajectories due to the large electric fields in the beam. A sheath electric field also channeled the proton beam through the cone tip, substantially improving the beam focus.

"These results agree well with our particle simulations and provide the physics basis for many future applications," said Mark Foord, one of the LLNL scientists on the team.

Other Livermore researchers include lead author Teresa Bartal (also a UCSD Ph.D student and Lawrence scholar), Claudio Bellei, Michael Key, Pravesh Patel, Drew Higginson and Harry McLean. The research appears in the Dec. 4 issue of the journal, Nature Physics.

Bartal said the experiments provide a new understanding of the physics involved in proton focusing, which affects how proton beams can be used in the future - from heating material to creating new types of matter that couldn't be made by any other means, to medical applications and insights into planetary science.

"The ability to generate high-intensity well-focused proton beams can open the door to new regimes in high-energy density science," Bartal said.

One example includes focusing a proton beam on a solid density or compressed material creating millions of atmospheres of pressure, allowing the study of the properties of warm dense matter found in the interior of giant planets such as Jupiter.

The UCSD team was led by Farhat Beg of Jacobs School of Engineering and several of his students participated in this experiment.

"This work has given a new direction to the conventional thinking of proton beam focusing in short-pulse laser matter interaction," Beg said. "Surely it will impact heating of pre-compressed materials to temperatures observed at the core of the sun and any future applications in proton oncology using high-intensity lasers."

Laser-produced proton beams also are making an impact on medical applications such as isotope production for positron emission tomography (PET) and proton oncology.

Related Links
Lawrence Livermore National Laboratory
Space Technology News - Applications and Research

Get Our Free Newsletters Via Email
Buy Advertising Editorial Enquiries


. Comment on this article via your Facebook, Yahoo, AOL, Hotmail login.

Share this article via these popular social media networks
del.icio.usdel.icio.us DiggDigg RedditReddit GoogleGoogle

Thinner thermal insulation
Freising, Germany (SPX) Dec 06, 2011
Insulation panels that are both thin and effective are expensive. At present these high-end products are built into energy-saving refrigerators. Innovative components and production techniques are now set to sink the costs - so that private home-builders can also benefit from the new technology. In Germany, the rising cost of heating has sparked a renovation boom. In order to lower energy ... read more

Netherlands to get phosphorus recycler

Proton beam experiments open new areas of research

Livermore and Russian scientists propose new names for elements 114 and 116

Dell abandons Android tablet in US

Northrop Grumman Awarded Microscale Power Conversion Contract

Raytheon First to Successfully Test With On-Orbit AEHF Satellite

Lockheed Martin AMF JTRS Team Demonstrates Communications and Tactical Data Sharing At Army Exercise

Boeing Ships WGS-4 to Cape Canaveral for January Launch

Europe's third ATV is loaded with cargo for its 2012 launch by Arianespace

Assembly milestone reached with Ariane 5 to launch next ATV

Russia launches Chinese satellite

AsiaSat 7 Spacecraft Separation Successfully Completed

China launches 10th satellite for independent navigation system

Authorities Gauge Impact of Europe's Galileo Navigation Satellite System

Russia's Glonass-M satellite put into orbit

ITT Exelis and Chronos develop offerings for the Interference, Detection and Mitigation market

Airbus eyes Japan's budget carriers

American Airlines slams 'rude' actor in plane row

Fitch downgrades Italian defence giant Finmeccanica

Hundreds of flights cancelled due to Beijing smog

Swiss scientists prove durability of quantum network

New '3-D' transistors promising future chips, lighter laptops

Pitt Researchers Invent a Switch That Could Improve Electronics

Samsung to build flash memory chip line in China

NASA Satellite Confirms Sharp Decline in Pollution from US Coal Power Plants

China launches remote-sensing satellite Yaogan XIII

Texas Drought Visible in New National Groundwater Maps

APL Proposes First Global Orbital Observation Program

Chinese go online to vent anger over pollution

Smog sparks debate over Beijing air standards

No breath of relief for kids in dirty Czech steel hub

UI engineers conduct residential soils study


The content herein, unless otherwise known to be public domain, are Copyright 1995-2012 - Space Media Network. AFP and UPI Wire Stories are copyright Agence France-Presse and United Press International. ESA Portal Reports are copyright European Space Agency. All NASA sourced material is public domain. Additional copyrights may apply in whole or part to other bona fide parties. Advertising does not imply endorsement,agreement or approval of any opinions, statements or information provided by Space Media Network on any Web page published or hosted by Space Media Network. Privacy Statement