نتایج جستجو برای: بلور czt

تعداد نتایج: 2168  

2001
P. F. Bloser T. Narita J. A. Jenkins J. E. Grindlay

We present results from the flight of two prototype CZT detectors on a scientific balloon payload in September 2000. The first detector, referred to as “CZT1,” consisted of a 10 mm × 10 mm × 2 mm CZT crystal with a single gold planar electrode readout. This detector was shielded by a combination of a passive collimator in the front, giving a 40 degree field of view and surrounded by plastic sci...

Journal: :Journal of Nuclear Cardiology 2019

Journal: :European Journal of Nuclear Medicine and Molecular Imaging 2015

Jalil Pirayesh Islamian, Parvaneh Darkhor Samira Abbaspour

Introduction: In nuclear medicine, the use of a pixelated semiconductor detector such as CZT is an of growing interest for introducing new devices. Especially, the spatial resolution can be improved by using a pixelated parallel-hole collimator with equal holes and pixel sizes based on the pixelated detector. The purpose of this study was to compare the effect of pixelated and ...

Journal: :Journal of nuclear cardiology : official publication of the American Society of Nuclear Cardiology 2013
Jenny Oddstig Fredrik Hedeer Jonas Jögi Marcus Carlsson Cecilia Hindorf Henrik Engblom

BACKGROUND For a 1-day myocardial perfusion SPECT (MPS) the recommendations for administered activity stated in the EANM guidelines results in an effective dose of up to 16 mSv per patient. Recently, a gamma camera system, based on cadmium zinc telluride (CZT) technology, was introduced. This technique has the potential to reduce the effective dose and scan time compared to the conventional NaI...

ژورنال: :نشریه دانشکده فنی 1975
رسول جواهری

ضمن مقایسه بیناب سنج های مختلف گاما و ایکس، مزیت بیناب سنج با بلور خمیده و دستگاههای خودکار ضمیمه برای چرخش بلور،تعیین زاویه چرخش بلور واندازه گیری شمارش در واحد زمان مختصرا ذکر شد. منحنی کالیبراسیون برای تعیین موقعیت زاویه ای بلور بیناب سنج بدست آورده شد و با استفاده از آن برای تعیین مناسبترین وضع منحنی های تغییرات پهنا و شدت خط برای پهنای مختلف شکاف رسم شد.

Journal: :Science China. Materials 2021

The chemical mechanical polishing (CMP) technology has been widely used for surface modification of critical materials and components with high quality efficiency. In a typical CMP process, the properties abrasives play vital role in obtaining ultra-precision damage-free wafers improvement their performances. this work, series fine structured rod-shaped silica (RmSiO2)-based controllable sizes ...

تک بلور YAG همزمان با دو آلاینده Ce+3 و Nd+3  بلور نسبتا جدیدی است که به عنوان محیط فعال در لیزرهای حالت جامد مورد استفاده قرار می‌کیرد. در این کار هدف رشد این بلور در جهت کریستالی ]111[ می‌باشد. برای این منظور از روش چکرالسکی و کوره القایی استفاده شد. سرعت کشش و چرخش به ترتیب 5/0 میلیمتر در ساعت و 24 دور در دقیقه انتخاب شد. پس از رشد موفقیت آمیز این بلور عملیات اپتیکی  برش، سایش و پولیش بر روی...

Journal: :Electronics 2022

Ground Penetrating Radar (GPR) application in road surface detection has been greatly developed the past few decades, which enables rapid and economical estimation of pavement thickness other physical properties non-destructive testing (NDT) non-contact (NCT). In recent years, with development microwave millimeter-wave solid-state devices digital signal processors, cost Frequency-Modulated Cont...

Journal: :IEEE transactions on radiation and plasma medical sciences 2023

Cadmium Zinc Telluride (CZT) detectors enables high spatial resolution and detection efficiency are utilized for many gamma-ray X-ray spectroscopy applications. In this paper, we describe a stable bonding process report on the characterization of cross-strip CZT before after to flexible circuit. The utilizes gold stud polymer epoxy technique bond circuits two crystals form detector module in an...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید