Radioactivity concentration of Naturally Occurring Radioactive Materials (NORMs) in shore sediments (samples) collected along the coast of Accra were analyzed using a gamma spectrometry with a high purity germanium detector. The specific activity concentrations range from 8.60 Bqkg to 61.01 Bqkg with a mean of 29.78 Bqkg for K, 0.62 Bqkg to 148.80 Bqkg with a mean of 22.04 Bqkg for Ra and 0.17 ...

One of the goals of hypernuclear physics is to study the properties of baryon-baryon interaction including the strangeness contribution. Double hypernuclei can provide information about the ΛΛ interaction in addition to the hyperon-hyperon and hyperon-nucleus one. A new technique for producing double hypernuclei using antiprotons is foreseen in the PANDA experiment at FAIR. Gamma ray spectrosco...

Semiconductor detector arrays are widely used in high-temperature plasma diagnostics. They have a fast response, which allows observation of many processes and instabilities in tokamaks. In this paper, there are reviewed several diagnostics based on semiconductor arrays as cameras, AXUV photodiodes (referred often as fast “bolometers”) and detectors of both soft X-rays and visible light install...

CATHETER SEMICONDUCTOR RADIATION DETECTOR FOR CONTINUOUS MEASUREMENT OF CARDIAC OUTPUT Hideo Ueda, Yashito Sasaki, Masahiro ho, Shigekoto Kaihara, Kikuo Machida, Iwao Ito, Sei-ichi Takayanagi, Tetsuji Kabayashi and Tohru Sugita 713 A METHOD FOR CHROMATOGRAPHIC SEPARATION OF IODO COMPOUNDS WITH A COMPUTER PROGRAM FOR DATA ANALYSIS R. E. Goldsmith, R. Kioth, H. E. Berry, J. Rauh, J. Landwehr and ...

In order to design an active-type personal dosemeter having sufficient sensitivity to high-energy neutrons up to 100 MeV, the characteristic response of several types of silicon (Si) semiconductor detectors has been investigated experimentally and theoretically. At first, the response of each detector has been checked to protons accelerated by a Van de Graff accelerator installed at Kobe Univer...

The first half of the Comment by Hallbeck et al. about our recent paper [1] describes an all BC device, described in Ref. [2], that is unlike the BC–silicon detector we mentioned in our paper. Although their observations about their all BC device are interesting, they are nevertheless inconsequential to our assertions about a BC–Si detector [1]. The use of solid boron compounds for thermal neut...

The first half of the Comment by Hallbeck et al. about our recent paper [1] describes an all BC device, described in Ref. [2], that is unlike the BC–silicon detector we mentioned in our paper. Although their observations about their all BC device are interesting, they are nevertheless inconsequential to our assertions about a BC–Si detector [1]. The use of solid boron compounds for thermal neut...

Research in microgravity (low-gravity) combustion promises innovations and improvements in fire prevention and response for human-crew spacecraft. Findings indicate that material flammability and fire spread in microgravity are significantly affected by atmospheric flow rate, oxygen concentration, and diluent composition. This information can lead to modifications and correlations to standard m...

The Heidelberg Dark Matter Search (HDMS) is an experiment designed for the search for WIMP dark matter. It is using a special configuration of Ge detectors, to efficiently reduce the background in the low-energy region below 100 keV. After one year of running the HDMS detector prototype in the Gran Sasso Underground Laboratory, the inner crystal of the detector has been replaced with a HPGe cry...

This article continues the discussion of multiuser detection. We first analyze the BER performance of a conventional detector. Starting with the results for 2 user case, we extend it the case of K users. We then define certain other performance measures which are simpler to calculate (than BER) and yet give a reasonable insight into the performance of multiuser detectors. Finally, we try to def...