Production of Co-58m in a siphon-style liquid target on a medical cyclotron

We present the production of ^58mCo on a small, 13 MeV medical cyclotron utilizing a siphon style liquid target system. Different concentrated iron(III)-nitrate solutions of natural isotopic distribution were irradiated at varying initial pressures and subsequently separated by solid phase extraction chromatography. The radio cobalt...

Ultra-low-frequency radio astronomy observations from a Seleno-centric orbit: First results of the Longjiang-2 experiment

This paper introduces the first results of observations with the Ultra-Long-Wavelength (ULW) —- Low Frequency Interferometer and Spectrometer (LFIS) on board the selenocentric satellite Longjiang-2. We present a brief description of the satellite and focus on the LFIS payload. The in-orbit commissioning confirmed a reliable operational status...

Diffusion coefficient estimations of radiometals in target solutions using microfluidic devices: A combined experimental & numerical study

Radiometals re-emerge as a promising alternative in nuclear imaging. Cyclotron production of such radiometals using liquid targets solve critical impurity problems seen with current conventional production methods. Purification employing liquid-liquid extraction in microfluidic environments has recently been investigated. Fluid behaviour in...

Antarctic surface melting dynamics using radar scatterometer data

Recent studies have shown that processes like the thinning of the ice shelves, the acceleration of the outlet glaciers and the collapses of the ice shelves are connected to surface melting. Several ice shelves at the Antarctic Peninsula, a region that has experienced an atmospheric warming much larger than the global average, have retreated and...

Wideband Single Pixel Radiometer in CMOS

The design and performance analysis are presented for a passive uncooled radiometer pixel suitable for integration in 28 nm CMOS technology. In the configuration a single wideband antenna, operating from 200 GHz to 600 GHz, is connected to a pn-junction diode. Including the antenna-detector impedance mismatch, the detector shows an average NEP...

Modeling and reconstruction of time series of passive microwave data by Discrete Fourier Transform guided filtering and Harmonic Analysis

Daily time series of microwave radiometer data obtained in one-orbit direction are full of observation gaps due to satellite configuration and errors from spatial sampling. Such time series carry information about the surface signal including surface emittance and vegetation attenuation, and the atmospheric signal including atmosphere...

Intermediate frequency band digitized high dynamic range radiometer system for plasma diagnostics and real-time Tokamak control

An intermediate frequency (IF) band digitizing radiometer system in the 100–200 GHz frequency range has been developed for Tokamak diagnostics and control, and other fields of research which require a high flexibility in frequency resolution combined with a large bandwidth and the retrieval of the full wave information of the mm-wave signals...

Analysis and modeling of the seasonal South China Sea temperature cycle using remote sensing

3D temperature modeling for the South China Sea using remote sensing data

The South China Sea's (SCS) seasonal, large-scale temperature cycle is governed to a large extend by the monsoon. This phenomenon modulates the large-scale circulation, transport and mixing as well as the exchange processes with the Pacific Ocean and the East China Sea. Also, significant variations in net surface heat flux will contribute to the...