We examine the application of Josephson radiation emitters to spectral calibration of singlephoton-resolving detectors. Josephson junctions were patterned in a YBCO film on a bi-crystal sapphire substrate and were voltage controlled to generate radiation in the frequency range of 0.051 THz. The detector used in this work consisted of a gate-defined quantum dot photon-to-charge transducer couple...

This paper discusses the trade-off between surge-current capability on the one hand and reverse-recovery charge, ruggedness and softness of high-voltage diodes on the other hand. Diodes with a CIBH (Controlled Injection of Backside Holes) structure in front of the cathode and a highly doped p-region combine high surge-current capability with reverse-recovery ruggedness and softness. This can be...

This paper reports the preliminary development of a microand nano-fabricated carbon nanotube (CNT) –based electron source intended for micro-propulsion applications. The paper proposes a device that implements a trade-off between microfabrication complexity and performance using a 3D packaging technology to minimize interception and decouple the process flows of the grid and the emitter array. ...

The Field emitter display (FED) is a very promising type of flat panel display. It possesses the potential to combine the performance of the Cathode Ray Tube with the compactness of the Liquid Crystal Display, while offering the additional advantage of low power consumption. The performance and reliability of the FED depend strongly upon the geometry of the deposited emitter cones. The formatio...

Due to the increasing complexity of electromagnetic signals, there exists a significant challenge for recognizing radar emitter signals. In this paper, a hybrid recognition approach is presented that classifies radar emitter signals by exploiting the different separability of samples. The proposed approach comprises two steps, namely the primary signal recognition and the advanced signal recogn...

PETALO (Positron Emission Tof Apparatus with Liquid xenOn) is a novel concept for positron emission tomography scanners, which uses liquid xenon as scintillation medium and silicon photomultipliers readout. The large yield the fast time of xenon, well its scalability, makes it an excellent candidate PET scanners Time-of-Flight measurements, especially total-body machines. A first prototype full...

Abstract A need for method validation in radiochemical analyses of decommissioning waste is a challenging task due to lack commercial reference materials. Participation an intercomparison exercise one way laboratory assess their performance and validate analysis results. three-year project within the Nordic Nuclear Safety Research (NKS) community was initiated order carry out exercises on diffi...

We demonstrate by 3D numerical calculations that the interaction of a single quantum emitter with the electromagnetic field is both enhanced and directed by a nano-optical Yagi-Uda antenna. The single emitter is coupled in the near field to the resonant plasmon mode of the feed element, enhancing both excitation and emission rates. The angular emission of the coupled system is highly directed a...

A field emission from a lateral emitter made by a multiwalled carbon nanotube (MWCNT) yarn was investigated. The lateral emitter showed an excellent field emission performance with a low turn-on electric field of 1.13 V/μm at an emission current of 1 μA, high emission current of 0.2 mA at an applied voltage of 700 V, and longtime emission stability for over 20 h without any significant current ...