Featured Research

from universities, journals, and other organizations

Proton beam experiments open new areas of research

Date:
December 6, 2011
Source:
DOE/Lawrence Livermore National Laboratory
Summary:
By focusing proton beams using high-intensity lasers, a team of scientists has discovered a new way to heat material and create new states of matter in the laboratory. In a new report, researchers unveiled new findings about how proton beams can be used in myriad applications.

The Trident laser at Los Alamos National Laboratory.
Credit: Joe Cowan and Kirk Flippo/Los Alamos Nat Lab/DOE

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.

Related Articles


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.


Story Source:

The above story is based on materials provided by DOE/Lawrence Livermore National Laboratory. Note: Materials may be edited for content and length.


Journal Reference:

  1. Teresa Bartal, Mark E. Foord, Claudio Bellei, Michael H. Key, Kirk A. Flippo, Sandrine A. Gaillard, Dustin T. Offermann, Pravesh K. Patel, Leonard C. Jarrott, Drew P. Higginson, Markus Roth, Anke Otten, Dominik Kraus, Richard B. Stephens, Harry S. McLean, Emilio M. Giraldez, Mingsheng S. Wei, Donald C. Gautier, Farhat N. Beg. Focusing of short-pulse high-intensity laser-accelerated proton beams. Nature Physics, 2011; DOI: 10.1038/nphys2153

Cite This Page:

DOE/Lawrence Livermore National Laboratory. "Proton beam experiments open new areas of research." ScienceDaily. ScienceDaily, 6 December 2011. <www.sciencedaily.com/releases/2011/12/111205140611.htm>.
DOE/Lawrence Livermore National Laboratory. (2011, December 6). Proton beam experiments open new areas of research. ScienceDaily. Retrieved October 23, 2014 from www.sciencedaily.com/releases/2011/12/111205140611.htm
DOE/Lawrence Livermore National Laboratory. "Proton beam experiments open new areas of research." ScienceDaily. www.sciencedaily.com/releases/2011/12/111205140611.htm (accessed October 23, 2014).

Share This



More Matter & Energy News

Thursday, October 23, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

3D Printed Instruments Make Sweet Music in Sweden

3D Printed Instruments Make Sweet Music in Sweden

Reuters - Innovations Video Online (Oct. 23, 2014) Students from Lund University's Malmo Academy of Music are believed to be the world's first band to all use 3D printed instruments. The guitar, bass guitar, keyboard and drums were built by Olaf Diegel, professor of product development, who says 3D printing allows musicians to design an instrument to their exact specifications. Matthew Stock reports. Video provided by Reuters
Powered by NewsLook.com
Chameleon Camouflage to Give Tanks Cloaking Capabilities

Chameleon Camouflage to Give Tanks Cloaking Capabilities

Reuters - Innovations Video Online (Oct. 22, 2014) Inspired by the way a chameleon changes its colour to disguise itself; scientists in Poland want to replace traditional camouflage paint with thousands of electrochromic plates that will continuously change colour to blend with its surroundings. The first PL-01 concept tank prototype will be tested within a few years, with scientists predicting that a similar technology could even be woven into the fabric of a soldiers' clothing making them virtually invisible to the naked eye. Matthew Stock reports. Video provided by Reuters
Powered by NewsLook.com
Jet Sales Lift Boeing Profit 18 Pct.

Jet Sales Lift Boeing Profit 18 Pct.

Reuters - Business Video Online (Oct. 22, 2014) Strong jet demand has pushed Boeing to raise its profit forecast for the third time, but analysts were disappointed by its small cash flow. Fred Katayama reports. Video provided by Reuters
Powered by NewsLook.com
Internet of Things Aims to Smarten Your Life

Internet of Things Aims to Smarten Your Life

AP (Oct. 22, 2014) As more and more Bluetooth-enabled devices are reaching consumers, developers are busy connecting them together as part of the Internet of Things. (Oct. 22) Video provided by AP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Space & Time

Matter & Energy

Computers & Math

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins