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Radiation Physics News

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Identifying Plutonium Isotope Ratios
Release Date: 03/23/2015

Two of the TES-based devices sitting on one key of a computer keyboard. The brown rectangle at the top is the mount upon which the … more

Computing for Better Radiation Therapy
Release Date: 02/19/2015

A photograph of the free-air chamber used for the physical measurements (left) and the corresponding model used in the computational simulations … more

Hidden Uncertainties Uncovered in Nuclear Forensic Measurement
Release Date: 02/02/2015

A visualization of the detectors used for anticoincidence more

Prototype for First Traceable PET-MR Phantom
Release Date: 01/23/2015

A fused PET-CT image of the new phantom with its traceably calibrated amount of fluor more

X-ray Detector for Synchrotron Beamlines
Release Date: 10/24/2014

TES detector (at top of device) mounted for use in a beam line. Click on image for enlarged view. Photos: Dan Schmidt/NIST NIST scientists have … more

Excimer Neutron Detection
Release Date: 04/15/2014

In a truly scintillating set of experiments, scientists at NIST and the University of Maryland have demonstrated that a process called excimer* … more

Spraying Mosquitoes . . . with Gamma Rays
Release Date: 08/16/2013

A paper cup served as an early irradiation enclosure. PML researchers placed dosimeters at various points in the enclosure and also monitored … more

New NIST Standard Reference Material to Help Calibrate Hospital CAT Scanners
Release Date: 07/23/2013

Scientists at the National Institute of Standards and Technology (NIST) have developed a new standard reference material (SRM), the first such … more

CT Standards Save Time and Money
Release Date: 06/05/2013

Larry Hudson with NIST-fabricated examples of test artifacts called out by the new CT image quality standard for security applications. Click … more

CT calorimetry
Release Date: 12/21/2012

Heather Chen-Mayer at the PET/CT scanner with HDPE phantoms. The large sections are for whole-torso measurements; the small cylinder is one more

Shaking Up Biomolecules with Light
Release Date: 09/28/2012

PML scientist Zeeshan Ahmed lowers a sample into the instrument chamber for analysis. In living organisms, biomolecules such as proteins are … more

New Detector Design Improves Gamma-rays Measurements
Release Date: 04/06/2012

The newly designed ionization chambers, in two sizes.   In the pursuit of precision measurements, nothing is simple, even when the apparatus … more

NIST Physicists Chip Away at Mystery of Antimatter Imbalance
Release Date: 11/08/2011

Why there is stuff in the universe—more properly, why there is an imbalance between matter and antimatter—is one of the long-standing mysteries of … more

Sharpened Focus: Improving the Numbers, Utility of Medical Imaging
Release Date: 04/12/2011

The idea of probing the body's interior with radiation stretches back to experiments with X rays in the 1800s, but more than a century later, … more

Bug-Zapper: A Dose of Radiation May Help Knock Out Malaria
Release Date: 11/08/2007

How are physicists helping an effort to eradicate malaria, the mosquito-borne disease that kills more than one million people every year? … more

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