Radiation

News and Updates

A new small-scale measurement invention ready for licensing

May 9, 2023

The National Institute of Standards and Technology (NIST) is the United States’ premier standards and measurements laboratory. NIST’s numerous varied and wide

NIST Scientists Develop Novel CT Scan Device for Integrated Circuits

April 14, 2023

Researchers at the National Institute of Standards and Technology (NIST) and their colleagues have developed a novel tabletop device that takes three

Ileana Pazos sits and smiles for a photo next to scientific equipment. She's holding tweezers next to the machine.

Spotlight: Research Chemist Ileana Pazos’ Radiant Role in Longer-Lasting, Safer Imported Foods

March 24, 2023

Fruits and vegetables brought in from outside the country first require health and foodborne pathogen inspections. NIST research chemist Ileana Pazos helps the

Projects and Programs

Carrier Dynamics Measured by Ultrafast Time-Resolved Terahertz Spectroscopy

Ongoing

Non-contact far-infrared (or THz, 25 to 300 micron wavelength) femtosecond laser methods are employed to measure 2D, bulk semiconductors, photovoltaic (PV)

Ultrafast Molecular Switch Dynamics Examined by Mid-Infrared Femtosecond Spectroscopy (Archived)

Completed

Ultrashort mid-infrared laser pulses are used to observe fast molecular and photochemical reaction processes occurring in the condensed phase. We have developed

Basic Metrology: Remote Sensing Methods for Imaging Dose to Water

Ongoing

Calorimetry based upon remote sensing of the temperature field in an irradiated volume would offer distinct advantages for the dosimetry of nonstandard beams

Medical (Archive): Workshop for Radiobiology Dosimetry Standardization

Completed

A program for the development of dosimetry standards for radiobiology was launched through a highly successful workshop. The NIAID/NCI/NIST-sponsored workshop

Publications

Gravimetric deposition of microliter drops with radiometric confirmation

September 9, 2023

Author(s)

Denis E. Bergeron, Richard Essex, Svetlana Nour, Gordon A. Shaw, R. Michael Verkouteren, Ryan P. Fitzgerald

A manual gravimetric dispensing technique is demonstrated using a micropipettor modified for use with removeable microcapillaries. Liquid scintillation sources

H2 Generation by the 10B(n,alpha)7Li Reaction in High Temperature Water

July 4, 2023

Author(s)

Alan Keith Thompson, Mohamad Al-Sheikhly, Steven Guerin, David Bartels, Cameron Goodwin, Sangho Nam

H2 produced in water from the 10B(n,α)7Li fission reaction has been measured up to 300 oC. Thermal energy neutrons from the Rhode Island Nuclear Science Center

Measurements and model of UV-induced oxidation of aluminum

March 22, 2023

Author(s)

Robert F. Berg, Charles S. Tarrio, Thomas B. Lucatorto

We present measurements and a model of aluminum oxidation induced by ultraviolet (UV) radiation. Spots of oxide were grown by focusing synchrotron radiation