نتایج جستجو برای: purity germanium

تعداد نتایج: 24042  

Journal: :Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 2020

2005
Heidi Miller

The decay of Pr produced in a nuclear fusion evaporation reaction was observed using the GAMMASPHERE array of over 100 Compton suppressed high-purity germanium γ-ray detectors. Selected γ-rays from bands 1, 5, and 6 were studied through a method of angular correlation to determine their multipolarities. The parity of band 6 could then be determined through analysis of these γ-rays’ multipolarit...

2017
Zhisheng Zhao Haidong Zhang Duck Young Kim Wentao Hu Emma S. Bullock Timothy A. Strobel

The optical and electronic properties of semiconducting materials are of great importance to a vast range of contemporary technologies. Diamond-cubic germanium is a well-known semiconductor, although other 'exotic' forms may possess distinct properties. In particular, there is currently no consensus for the band gap and electronic structure of ST12-Ge (tP12, P43212) due to experimental limitati...

Journal: :Journal of Instrumentation 2022

Abstract The Majorana Demonstrator comprises two arrays of high-purity germanium detectors constructed to search for neutrinoless double-beta decay in 76 Ge and other physics beyond the Standard Model. Its readout electronics were designed have low electronic noise, radioactive backgrounds minimized by using low-mass components low-radioactivity materials near detectors. This paper provides a d...

Journal: :Basic life sciences 1993
A C Todd F E McNeill

Previous logCd-based K XRF bone lead measurement systems have used an annular source of “‘Cd mounted coaxially with, and in front of, a 16 mm diameter hyperpure germanium detector. To take advantage of the advent of larger volume detectors, the IogCd fluorescing source was redesigned to allow its positioning at the center of the I detector face. The redesigned source is a cylinder of external d...

2014
Alireza Aslani Graeme M Snowdon Dale L Bailey Geoffrey P Schembri Elizabeth A Bailey Paul J Roach

OBJECTIVES Gallium-68 (Ga-68) is an ideal research and hospital-based PET radioisotope. Currently, the main form of Ga-68 radiopharmaceutical that is being synthesised in-house is Ga-68 conjugated with DOTA based derivatives. The development of automated synthesis systems has increased the reliability, reproducibility and safety of radiopharmaceutical productions. Here we report on our three ye...

ژورنال: سنجش و ایمنی پرتو 2020

In this study, 34 soil samples were collected from the east of the Shazand power plant to the  Arak city, with a length of 25 km. The specific activities of radionuclides of 226Ra, 232Th, 40K, and 137Cs were determined using gamma-ray spectrometry method. Gamma-ray spectra registered to employ high purity germanium (HPGe) detector with 30% relative efficiency. Specific activities of correspondi...

2007
M. Barnabé C. Cattadori O. Chkvorets K. Gusev M. Hult P. Peiffer S. Schönert M. Shirchenko A. Smolnikov A. Vasenko S. Vasiliev S. Zhukov

The GERDA (GERmanium Detector Array) experiment aiming to search for the neutrinoless double beta decay (0νββ) of Ge at the Laboratori Nazionali Del Gran Sasso (LNGS), Italy, will operate bare enriched high-purity germanium (HPGe) detectors in liquid argon. GERDA Phase I will use the enriched diodes from the previous Heidelberg-Moscow (HdM) and IGEX experiments. With the HPGe detectors mounted ...

2008
Y. Wang

A considerable fraction of germanium is produced as a by-product in zinc metallurgy. In the conventional roast-leach-electrowin (RLE) process, most of the germanium is incorporated into the neutral leaching residue, which is the main source for germanium recovery. As the largest germanium supplier worldwide, Yunnan Chihong Zinc & Germanium Co., Ltd (Yunnan, China), recover germanium shown in Fi...

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