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If you ask NIST physicist Cassie Stoffer what she finds most exciting about science, it’s seeing what she learned in a textbook have real-world applications
We employ ultrafast pulsed optical measurement techniques to directly monitor carrier generation, migration and relaxation dynamics in bulk semiconductors, polymers and mixed organic/organometallic photovoltaic nanofilms. These studies are conducted to measure (without contact) ultrafast carrier
Examing dynamical properties of chemical species and materials often requires measurement over many orders of time. Since early time dynamics of molecular processes occurring on the femtosecond and picosecond timescales determines their subsequent photochemistry at later times. The goal of this
The NIST Neutron Microscope The NIST neutron microscope based Wolter optics represents a complete change in the way neutron imaging will be conducted, as the time and spatial resolution achievable with this instrument will approach that early generation X-ray synchrotron beamlines. A collaboration
The stars and galaxies that make up our universe can only form if, during the initial moments after the Big Bang, there existed a slight dominance of matter over antimatter. It has been understood for some time that such an imbalance can only be explained if three conditions are met; a departure
B. Carol Johnson, Giuseppe Zibordi, Ewa Kwiatkowska, Kenneth Voss, Frederic Melin, David Antoine, Menghua Wang, Shuguo Chen, Constant Mazeran, Brian Barnes, Jee-Eun Min
System Vicarious Calibration (SVC) is the technique that maximizes the accuracy of satellite ocean colour data products by minimizing the impact of inaccuracies
Bert Coursey, Brian E. Zimmerman, Michael G. Mitch, Paul Frame
This report describes the use of five electroscopes used as national standards for radioactivity for the United States during the early 20th century. This set
The intriguing law of anomalous numbers, also named Benford's law, states that the significant digits of data follow a logarithmic distribution favoring the
Denis E. Bergeron, Jeffrey T. Cessna, Brittany Broder, Leticia Pibida, Ryan P. Fitzgerald, Morgan DiGiorgio, Elisa Napoli, Brian E. Zimmerman
Thorium-227 was separated from its progeny and standardized for activity by the triple-to-double coincidence ratio (TDCR) method of liquid scintillation
The Synchrotron Ultraviolet Radiation Facility SURF III is operated by the Optical Radiation Group as a stable light source for radiometry and research. SURF
Radioactivity measurements for diagnostic and therapeutic nuclear medicine in the United States are based on measurements at NIST. Activity measurements for γ
As part of the building 245 modernization project, NIST has built a new facility designed to allow the testing of small radiation detection instruments, such as
The Parallel Beam Diffractometer laboratory is a highly-controlled space (0.01 degree C stability) containing a set of absolutely calibrated stacked goniometer