Los Alamos scientists develop new method to detect smuggled nukes

Scientists at the Los Alamos National Laboratory in New Mexico have developed a way to use cosmic radiation to help detect nuclear weapons or materials possibly being smuggled into the United States, the laboratory announced Saturday.

The technique involves the use of muons, which are produced when cosmic radiation decays as it hits the Earth. Los Alamos researchers have developed a system that uses muon radiography to detect uranium, plutonium or other dense materials. A suspect object, such as a cargo container, is passed through two pairs of detectors - one set above the object and one below - that record muons' paths before and after they pass through the object. Analysis of the energy and trajectory of the muons results in a three-dimensional map of the inside of the suspect object, according to a Los Alamos release.

"If we measure the muon's path and energy with two detectors going in and two coming out, we have a straight line on either side that tells us how much the target deflects the muon, and we can locate the highly dense objects, as well as distinguishing between materials," Los Alamos researcher Larry Schultz said in the release.

The detector is capable of spotting nuclear materials even through heavy shielding, such as lead, the release says.

Scientists have been able to "train the system to spot objects of interest with a rate of false positives and false negatives that is less than 3 percent," Rick Chartrand of the laboratory's Theoretical Division said in the release. "We think we can continue to improve that."

Los Alamos researchers described their efforts to develop a nuclear detector using muon radiography during a presentation in Washington at this year's meeting of the American Association for the Advancement of Science.

The Bush administration has placed a new focus on combating the smuggling of nuclear and radioactive materials, requesting funds in its proposed fiscal 2006 budget to create an office of domestic nuclear detection within the Homeland Security Department. The new office reportedly would include representatives from several governmental agencies, including the Defense, Energy and State departments, and would focus on activities such as developing new detection techniques and increasing training in their use.

Muon radiography has several advantages over detectors now deployed at U.S. borders, which use either X-rays or gamma rays, according to the laboratory. For example, gamma-ray detectors are less penetrating than those using muons, produce results that require additional interpretation and require the use of hazardous material such as cobalt.

Los Alamos scientists are now working to develop a set of muon radiography detectors large enough to scan large metal objects within 60 seconds. As the process develops, inspectors using the detectors may be able to clear a vehicle within about 20 seconds of muon exposure, the laboratory release says.

"We believe we've worked through all of the major obstacles to building a prototype system for a range of security issues," Chris Morris of the laboratory's Physics Division said in the release.

Stay up-to-date with federal news alerts and analysis — Sign up for GovExec's email newsletters.
FROM OUR SPONSORS
JOIN THE DISCUSSION
Close [ x ] More from GovExec
 
 

Thank you for subscribing to newsletters from GovExec.com.
We think these reports might interest you:

  • Forecasting Cloud's Future

    Conversations with Federal, State, and Local Technology Leaders on Cloud-Driven Digital Transformation

    Download
  • The Big Data Campaign Trail

    With everyone so focused on security following recent breaches at federal, state and local government and education institutions, there has been little emphasis on the need for better operations. This report breaks down some of the biggest operational challenges in IT management and provides insight into how agencies and leaders can successfully solve some of the biggest lingering government IT issues.

    Download
  • Communicating Innovation in Federal Government

    Federal Government spending on ‘obsolete technology’ continues to increase. Supporting the twin pillars of improved digital service delivery for citizens on the one hand, and the increasingly optimized and flexible working practices for federal employees on the other, are neither easy nor inexpensive tasks. This whitepaper explores how federal agencies can leverage the value of existing agency technology assets while offering IT leaders the ability to implement the kind of employee productivity, citizen service improvements and security demanded by federal oversight.

    Download
  • IT Transformation Trends: Flash Storage as a Strategic IT Asset

    MIT Technology Review: Flash Storage As a Strategic IT Asset For the first time in decades, IT leaders now consider all-flash storage as a strategic IT asset. IT has become a new operating model that enables self-service with high performance, density and resiliency. It also offers the self-service agility of the public cloud combined with the security, performance, and cost-effectiveness of a private cloud. Download this MIT Technology Review paper to learn more about how all-flash storage is transforming the data center.

    Download
  • Ongoing Efforts in Veterans Health Care Modernization

    This report discusses the current state of veterans health care

    Download

When you download a report, your information may be shared with the underwriters of that document.