Different forms of fluctuations of the terrestrial gravity field are observed by gravity experiments. For example, atmospheric pressure fluctuations generate a gravity-noise foreground in measurements with super-conducting gravimeters. Gravity changes caused by high-magnitude earthquakes have been detected with the satellite gravity experiment GRACE, and we expect high-frequency terrestrial gra...

A V-band receiver using a MHMIC multiport circuit is presented in this paper. The millimeterwave frequency conversion is performed using a passive circuit, the multiport, and related power detectors, avoiding the conventional millimeter-wave active costly mixers. Basically, the multiport circuit is an additive mixer in which the resulting sum of millimeter-wave signals is nonlinearly processed ...

Title of Dissertation: DESIGN AND FABRICATION OF ON CHIP MICROWAVE PULSE POWER DETECTORS Woochul Jeon, Doctor of Philosophy, 2005 Directed By: Professor John Melngailis Department of Electrical and Computer Engineering On-chip microwave pulse-power detectors are promising devices for many electrical systems of both military and commercial applications. Most research in microwave power detector ...

The assessment of space radiation exposure on plants, animals, cell cultures, as well as the astronauts, is crucial not only because it is very different from that to which they are subjected on the earth, but also to understand the combined effects of exposure to space radiation under microgravity. In particular, we evaluated the equivalent dose due to neutrons and charged particles for biolog...

In The industry has always focused to devise engineering methodologies for establishment and modification of relatively easier methods for any exhaustive process. A number of different technologies have been developed suitable for the detection of the motion or presence of a target at shorter or longer distances. Most of them make use of a small portion of the electromagnetic spectrum, usually ...

Modern radiation therapy is very conformal, resulting in a complexity of delivery that leads to many small radiation fields with steep dose gradients, increasing error probability. Quality assurance in delivery of such radiation fields is paramount and requires real time and high spatial resolution dosimetry. Semiconductor radiation detectors due to their small size, ability to operate in passi...

In this paper, we put forward a new approach towards realizing measurement-device-independent quantum key distribution with passive heralded single-photon sources. In this approach, both Alice and Bob prepare the parametric down-conversion source, where the heralding photons are labeled according to different types of clicks from the local detectors, and the heralded ones can correspondingly be...

Several case-control studies have indicated an increased risk of lung cancer linked to indoor radon exposure. For a precise evaluation of radon-related lung cancer risk, however, contribution of thoron should be considered. There are a lot of studies in which passive type radon detectors are used without thoron discrimination techniques. Therefore, these passive type radon detectors may be stro...

Crystal-damage events such as tracks and point defects have been used to record detect radiation for a long time recently they proposed means dark-matter detection. Color centers can be read out optically we propose scheme based on selective plane illumination microscopy micrometer-scale imaging of large volumes corresponding kilogram mass detectors. This class detectors would passive operate a...

Active and passive dosimetry instrumentation to measure absorbed dose, charged particle spectra, and linear energy transfer spectra inside the command module and orbital workshop on the NASA Skylab Program in 1972 have been developed and tested. The active doslmetry system consists of one integral unit employing both a tissue equivalent ionization chamber and silicon solld state detectors. The ...