نتایج جستجو برای: purity germanium
تعداد نتایج: 24042 فیلتر نتایج به سال:
High-purity germanium compounds (e.g. germanium dioxide) are used these days in several applications (e.g. germanium-based detectors, semiconductors, fiber-optic systems). Thus, reliable methods for the routine determination of trace element impurities from germanium compounds must be developed. In this study, inductively coupled plasma mass spectrometry, inductively coupled plasma optical emis...
Deposition of 226Ra from water on nylon was investigated. Measurements performed for different pH and different radium concentrations in the water gave similar absolute activities deposited on the foil surface. Obtained results were used to estimate the amount of 226Ra plated-out on the nylon scintillator vessel in the solar neutrino experiment BOREXINO during filling of the detector. Another p...
The response of a high-purity germanium detector to X-rays in the 8-15-keV energy region has been investigated. The w-value and energy resolution dependencies on the X-ray energy have been studied. No abrupt variation of w is observed at the germanium K absorption-edge (11.104-keV). The detector energy resolution follows a characteristic linear dependence on Ex(-1/2) over the whole energy range...
مقدمه: محیط زندگی و مصالح به کار رفته در ساختار ساختمان های مسکونی دارای مقادیر مختلفی از عناصر رادیواکتیو می باشد. آگاهی از توزیع و سطح تشعشعات در محیط برای ارزیابی تأثیرات پرتوزا در محیط زندگی انسان بسیار مهم است. در این مطالعه، میزان فعالیت هسته های پرتوزا در سنگ های گرانیت با توجه به نوع رنگ هر سنگ ارزیابی گردید. روش ها: جهت تعیین پرتوزایی طبیعی سنگ های گرانیت، 13 نوع از سنگ های گرانیتی مور...
Replacing molecular chlorine and hydrochloric acid with less energy- and risk-intensive reagents would markedly improve the environmental impact of metal manufacturing at a time when demand for metals is rapidly increasing. We describe a recyclable quinone/catechol redox platform that provides an innovative replacement for elemental chlorine and hydrochloric acid in the conversion of either ger...
The EXOGAM clover detector consists of four high-purity germanium (HPGe) crystals in a common cryostat. Each individual crystal is electrically segmented into four regions. We propose a method based on a multidimensional fitting procedure to calibrate the energy from the segments. This method could be used for any kind of segmented germanium detector. Its application to the EXOGAM clover is dis...
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