Keyword: Radiation

Briefs: Photonics/Optics

Measurements of the cosmic micro wave background are a powerful probe of the early universe. Part-per-million fluctuations in the intensity of background trace the initial...

Briefs: Software
Predicting Magnetospheric Relativistic >1 MeV Electrons

There is an association between High-Intensity Long-Duration Continuous AE (HILDCAA) activity intervals and the acceleration of relativistic >1 MeV electrons in the magnetosphere. All of the HILDCAAs that occurred in solar cycle 23 (SC23) from 1995 to 2008 led to the acceleration of...

Briefs: Test & Measurement
Fusible Alloy Thermometer

This work was based on the need for a relatively small passive detector of maximum temperature reached by an object that can be visually inspected. The device requirements are to be hermetically sealed for contamination control, give a clear indication of maximum temperature achieved (non-reversible) with a ~10 °C...

Briefs: RF & Microwave Electronics
Simple Impedance Matched Planar Microwave Blocking Filter

Thermal blocking filters find wide use in cryogenic applications ranging from quantum computing to ultra-low-noise detectors. They can be used to provide the environmental isolation between cooled devices and the warmer temperature supporting bias and readout circuitry. In particular,...

Briefs: Electronics & Computers

The proposed technology involves the sensitive detection of magnetic fields using the zero-field, spin-dependent...

Briefs: Medical
Relativistic Ion Tracks (RITRACKS)

Once astronauts venture beyond Earth’s protective atmosphere, they are exposed to the high-energy charged particles of galactic cosmic rays (GCR) and solar particle events (SPE), and secondary protons and neutrons. GCR are composed of ions, the great majority of which are protons (≈87%) and helium nuclei...

NASA Spinoff: Aerospace
NASA Technology

Nick Blanton spends a lot of time outdoors, skiing in the winter months and hiking when the weather’s warm. All of this takes a toll on his electronic gadgets, which...

Briefs: Information Technology
Net Radiation and Evapotranspiration (Rn/ET) Download Product Tools and Interfaces

This toolset automates downloads of global, multi-year Moderate Resolution Imaging Spectroradiometer (MODIS) and related data necessary for performing net radiation and evapotranspiration (Rn/ET) modeling, and provides an application programming interface (API)...

Briefs: Electronics & Computers
Miller-Jogging for Synthesizer Lock Algorithm Extension

The University of California Los Angeles (UCLA) has developed a wide range of CMOS (complementary metal–oxide–semiconductor) phase lock loop (PLL) chips with self-healing/self-calibration capabilities, allowing them to adapt, on the fly, to changes in temperature and other environment...

Briefs: Sensors/Data Acquisition
Generating a Laser Linear Frequency Modulation Waveform for Application in Coherent Doppler Lidar

Frequency modulation of a single-frequency laser with a linear triangular waveform is of great interest to many laser remote sensing and interferometry applications. Linear frequency modulation of a continuous-wave (CW) laser beam can make target...

Briefs: Materials
Processing and Damage Tolerance of Continuous Carbon Fiber Composites Containing Puncture-Self-Healing Thermoplastic Matrix

The initiation and propagation of damage ultimately results in failure of aircraft structural components. Often, impact damage is difficult to identify in-service, and hence design of continuous carbon fiber reinforced...

Briefs: Materials

An experimental study was conducted in conjunction with the research and development program at the NASA Marshall Space Flight Center (MSFC) on thermal protection systems (TPS) for aerospace applications, a...

Briefs: Manufacturing & Prototyping
Precision Detector Conductance Definition via Ballistic Thermal Transport

The characteristics of a thermal detector, such as sensitivity, response time, and saturation power (or energy resolution), are functions of the thermal conductance of the detector to its cryogenic environment. The thermal conductance is specified to achieve a tradeoff...

Application Briefs: Aerospace
Apex SLR ICP etch system
Advanced Vacuum, a Plasma-Therm Co.
Saint Petersburg, FL
800-246-2592
www.plasmatherm.com

An Advanced Vacuum inductively...

Briefs: Imaging
Wide-Spectrum Organic Mass Spectrometer Using Far-Ultraviolet Ionization

Two-step laser desorption/photoionization mass spectrometry (L2MS) represents a powerful tool for the organic analysis of astromaterials. The technique has high sensitivity and requires little to no sample preparation.

Application Briefs: Aerospace
Brimrose Corporation of America
Sparks, MD
410-472-7070
www.brimrose.com

Brimrose is developing radiation detectors that can improve NASA’s...

Briefs: Electronics & Computers
Dual I²C and SPI Slave Core for FPGA and ASIC Implementations

The I2C/SPI Verilog core consists of a combined register transfer logic (RTL) Verilog code for a general-purpose I2C and serial-to-parallel interface (SPI) slave for implementations targeting field programmable gate arrays (FPGAs) and application specific...

Briefs: Manufacturing & Prototyping
Uniformly Etched Lateral Gratings Applied to Pre-existing Ridge Waveguides

There is great difficulty in implementing lateral gratings in GaSb-based lasers. Commercially, single-frequency GaSb lasers have been fabricated using metal gratings deposited laterally to the ridge-waveguide (RWG) stripe. The disadvantage of this is that the laser...

Briefs: Medical
Use of Osteoclast-Inhibiting Compounds to Prevent Radiation-Induced Bone Loss

This technology features a method for preventing or treating radiation-associated loss of bone mass, bone density, or bone strength in a subject. This technology involves administering to the subject an amount of anti-resorptive or osteoclast-inhibiting compound...

Articles: Imaging

Using a method known as ultrafast electron diffraction (UED), a scientific instrument at the Department of Energy’s SLAC National Accelerator...

Briefs: Materials
Multifunctional B/C Fiber Composites for Radiation Shielding

A versatile, novel, multifunctional hybrid structural composite of a high-hydrogen epoxy matrix (UN-10) coupled with boron and carbon fibers (IM-7) has been developed. Prototype laminates of 18×18 in. (≈46×46 cm), with the nominal areal density of 0.35 g/cm2, were...

Briefs: Materials
Using Black Polyimide/Kevlar as a Metering Structure Multi-Layer Insulation (MLI)

Metering structures of remote sensing instruments often have large openings or access holes. Shear panels that are X-shaped, such as those proposed for the Neutron Star Interior Composition Explorer (NICER), generally consist of C-channels and L-brackets to...

Briefs: Sensors/Data Acquisition
ATMS Antenna Beam Analysis Software

The Advanced Technology Microwave Sounder (ATMS) Antenna Beam Analysis Software uses a suite of test data to calculate the ATMS instrument beam pointing, and secondarily, the polarization state, in the coordinates of the onboard optical cube. The software uses measurement inputs of RF radiation pattern...

Briefs: Electronics & Computers
Fault Recovery for Multi-Phase Power Converters

A fault recovery method for multiphase power converters enables delivery of reduced output power of as much as 66% of normal power in the event of a shorted power switch component. The need for redundant power converters in conventional multi-phase space power systems is reduced, if not eliminated....

Briefs: Photonics/Optics
Radiation Design of Ion Mass Spectrometer for Europa

An ion mass spectrometer was developed (IMS) that can operate in the high radiation environment of Jupiter’s magnetosphere and its icy moons. If successful, this instrument will provide the first plasma composition measurements within Jupiter’s magnetosphere. This entails development of...

NASA Spinoff: Aerospace

Because NASA is planning for future visits to distant locations like Mars, the agency is researching how to grow plants in space. Live plants on space missions provide a nutritious food...

Articles: Photonics/Optics

Optoelectronic components must be protected from the radiation they are exposed to in military, space and nuclear environments to prevent malfunction and damage. Radiation hardening electronics...

INSIDER: Electronics & Computers

In today’s smart home, technologies can track how much energy a particular appliance like a refrigerator or television or hair dryer is gobbling up. What they don’t typically show is which...

INSIDER: Electronics & Computers

Space is cold, dark, and lonely. Deadly, too, if any one of a million things goes wrong on your spaceship. It’s certainly no place for a computer chip to fail, which can happen due to the...