CODEX is uniquely able to analyze the microscopic chemical and organic makeup of a sample in spatial context, while simultaneously determining its age. The instrument uses nanosecond laser pulses to ablate ions and neutrals, which can be measured directly or via secondary ionization. Recently, experiments using ultrashort pulse laser ablation have demonstrated significant improvement in measurement precision and accuracy, and new technological developments have resulted in significant reductions in the required size, power, and mass of lasers capable of producing these ultrashort pulses. These improvements primarily have been demonstrated with laser ablation mass spectrometry LAMS , and in laser desorption inductively coupled plasma mass spectrometry, techniques that rely on the production of ions and micro-particulates. However, little is yet known about the production of neutrals using ultrashort pulses; some work suggests that fractionation of neutrals is reduced as well. In this proposal we will rent and compare several femto- and pico- second lasers for ion and neutral production in our prototype instrument, and identify the optimal parameters for improving the accuracy of chemical, organic, and radiometric measurements. The laser systems under consideration will include small systems consistent with the possibility of future development for spaceflight. The resulting chemistry, organics, and dating measurements are particularly applicable for missions to Mars, the Moon, and possibly Vesta. This investigation could be approached with both in situ and returned sample analysis Download Metadata.
For this reason, you should use the agency link listed below which will take you directly to the appropriate agency server where you can read the official version of this solicitation and download the appropriate forms and rules. This effort is driven by both new threats and available and emerging technologies. These technologies have the potential to vastly improve the agility and flexibility of the Navy systems by utilizing high-energy lasers for Battle Space Supremacy and Water Space Management as envisioned by the Chief of Naval Operations CNO.
The Navy seeks to address the manufacturability, electrical-to-optical EO efficiency and technology risk assessment and reduction of this class of laser amplifier design. The major advantage of this spectrum for HEL class amplifier should lead to an increase in engagement range at marine atmospheric conditions, such as scattering, thermal blooming etc. The third consideration of 2?
Abstract. The blue sky was observed near 90° from the sun, in the vertical plane through the direction of the sun, with the sun above and just below the horizon.
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This document describes visible solar radiation with wavelengths close to the UV range, its transmission to, within and the effects on the human eye. The wavelengths concerned are from nm to nm, covering the colours of violet, indigo and blue — often referred to as the “blue wavelengths”. It also explains the filtering effects and measurement of spectacle lenses and sunglasses, thereby providing background information to understand the transmittance requirements related to filtering effects of lenses and filters in the available spectacle lens and sunglass standards.
This document is intended to be of benefit to any future interest in ISO standardization related to transmission of solar radiation with wavelengths near to and greater than nm. Check out our FAQs.
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Sign In. Integrated Optics at This paper will discuss the properties of the waveguides, the modulators, the passive components, and the waveguide laser that have been made to date. The most significant advancement is probably guided-wave modulation. Both the analysis and the initial experimental measurements indicate that pi-phase or percent amplitude UHF-VHF modulation could be obtained with only a few hundred watts of modulation drive power.
Microwave modulation has also been experimentally demonstrated.
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Please select your location to view the products, information, and services available, including news, promotions and events. The single-wavelength detector contains LED UV lamps and filters that monitor UV absorbance of nucleotides nm and proteins nm , one wavelength at a time. The integrated conductivity detector monitors real-time salt gradients. This UV detector can be used with three interchangeable flow cells with path lengths of 2 , 5 , and 10 mm.
Alert: Due to routine maintenance on the OSHA website, some pages may be temporarily The wavelength of sound is usually measured in meters or feet. OSHA. No date. Occupational Noise Exposure, Safety and Health Topics.
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