Featured Research

from universities, journals, and other organizations

Nanoparticles show promise as inexpensive, durable and effective scintillators

Date:
March 25, 2013
Source:
American Institute of Physics
Summary:
Nanoparticles can be successfully incorporated into scintillation devices capable of detecting and measuring a wide energy range of X-rays and gamma rays, new research shows.

A team of industrial and university researchers has shown that nanoparticles with sizes smaller than 10 nanometers -- approximately the width of a cell membrane -- can be successfully incorporated into scintillation devices capable of detecting and measuring a wide energy range of X-rays and gamma rays emitted by nuclear materials.

Related Articles


The proof-of-concept study, described in the Journal of Applied Physics, suggests that "nanocrystals" -- nanoparticles clustered together to mimic the densely-packed crystals traditionally used in scintillation devices -- may one day yield radiation detectors that are easy and inexpensive to manufacture, can be produced quickly in large quantities, are less fragile, and capture most of the X-ray and gamma ray energies needed to identify radioactive isotopes. Earlier studies have shown that when X-rays or gamma rays strike these miniature, non-crystalline scintillators, some atoms within them are raised to a higher energy level. These atoms de-excite and give off their energy as optical photons in the visible and near-visible regions of the electromagnetic spectrum. The photons can be converted to electrical pulses, which, in turn, can be measured to quantify the X-ray and gamma radiation detected and help locate its source.

In the latest experiment, the researchers suspended nanoparticles of lanthanum halide and cerium tribromide (loaded in both 5 percent and 25 percent concentrations) in oleic acid to create nanocomposite scintillators with sizes between 2-5 nanometers. When compared to computer models and data from prior studies, the nanocomposite detectors matched up well in their ability to discern X-rays and gamma radiation. When compared to an existing radiation detection system of similar size that uses plastic, the 25 percent loaded nanocomposite fared better than the 5 percent loaded, but still was only about half as efficient. Therefore, the researchers conclude that more work is needed to refine and optimize their "nanocrystal" system.


Story Source:

The above story is based on materials provided by American Institute of Physics. Note: Materials may be edited for content and length.


Journal Reference:

  1. Paul Guss, Ronald Guise, Ding Yuan, Sanjoy Mukhopadhyay, Robert O'Brien, Daniel Lowe, Zhitao Kang, Hisham Menkara, Vivek V. Nagarkar. Lanthanum halide nanoparticle scintillators for nuclear radiation detection. Journal of Applied Physics, 2013; 113 (6): 064303 DOI: 10.1063/1.4790867

Cite This Page:

American Institute of Physics. "Nanoparticles show promise as inexpensive, durable and effective scintillators." ScienceDaily. ScienceDaily, 25 March 2013. <www.sciencedaily.com/releases/2013/03/130325125605.htm>.
American Institute of Physics. (2013, March 25). Nanoparticles show promise as inexpensive, durable and effective scintillators. ScienceDaily. Retrieved March 26, 2015 from www.sciencedaily.com/releases/2013/03/130325125605.htm
American Institute of Physics. "Nanoparticles show promise as inexpensive, durable and effective scintillators." ScienceDaily. www.sciencedaily.com/releases/2013/03/130325125605.htm (accessed March 26, 2015).

Share This


More From ScienceDaily



More Matter & Energy News

Thursday, March 26, 2015

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Amazon Complains U.S. Is Too Slow To Regulate Drones

Amazon Complains U.S. Is Too Slow To Regulate Drones

Newsy (Mar. 25, 2015) Days after getting approval to test certain commercial drones, Amazon says the Federal Aviation Administration is dragging its feet on the matter. Video provided by Newsy
Powered by NewsLook.com
Smartphone Use Changing Our Brain and Thumb Interaction, Say Researchers

Smartphone Use Changing Our Brain and Thumb Interaction, Say Researchers

Reuters - Innovations Video Online (Mar. 25, 2015) European researchers say our smartphone use offers scientists an ideal testing ground for human brain plasticity. Dr Ako Ghosh&apos;s team discovered that the brains and thumbs of smartphone users interact differently from those who use old-fashioned handsets. Jim Drury went to meet him. Video provided by Reuters
Powered by NewsLook.com
China Wants to Export Its Steel Problem

China Wants to Export Its Steel Problem

Reuters - Business Video Online (Mar. 25, 2015) China is facing a crisis with a glut of steel and growing public anger over the pollution created by production. In a move to solve the problem, some steel mills are looking to relocate overseas. Jane Lanhee Lee reports. Video provided by Reuters
Powered by NewsLook.com
Robot Stays on Its Feet Despite Punishment

Robot Stays on Its Feet Despite Punishment

Reuters - Innovations Video Online (Mar. 24, 2015) Robotic engineers have modelled a two-legged robot to be fast and agile like an ostrich. The design is more efficient and stable than bipedal robots built to move like humans, according to its creators who abuse the poor machine to test its skills. Ben Gruber has more. Video provided by Reuters
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