gamma detector 中文意思是什麼
gamma detector
解釋
γ探測器,閃爍探測器-
At present, this kind of gaas photoconductor detector has had practical value. it can detect x - ray, gamma - ray, laser pulse successfully
目前，我們研製的gaas探測器已具有一定的實用價值，可用在室溫下對x射線、射線、激光脈沖進行探測。 -
Quality control of nuclear medicine instruments - part 2 : constancy testing of single crystal gamma - camers used in planar scintigraphy and in anger type gamma cameras with rotating detector heads used in single photon emission tomography
核醫療儀器的質量控制.第2部分:用於單光子x線斷層術 -
Measurements of compton recoil electron spectra caused by the gamma ray are detected by a nominal 5. 08cm - diam 5. 08cm - long bc - 501a scintillator detector
Bc - 501a液體閃爍探測器用於測量射線產生的康普頓反沖電子譜。 -
The leakage gamma ray of iron spheres is measured by high pure germanium ( hpge ) detector. comparing with the bc - 501a scintillator detector, four characteristic gamma rays : 846. 77, 1238. 282, 1771. 351 and 2212. 933kev caused by inelastically scattered neutrons are coincident with the bc - 501 a scintillator detector. it shows that the measurements by bc - 501 a scintillator detector are accurate and credible
利用高純鍺探測器測量泄漏能譜，並與bc - 501a測量的結果進行了對比，幾個典型的中子非彈性散射所產生的特徵射線峰846 . 77kev ， 1238 . 282kev ， 1771 . 351kev和2212 . 933kev ，對應的較一致，由此確定bc - 501a探測器測量結果是準確、可靠的。 -
There is presently a widespread need for room temperature gamma and x - ray imaging capability for both medical and industrial applications. the interest toward the use of cdznte detector was greatly increased in the recent years because they offer a good trade - off between key perfonnance, such as the energy resolution and the absorption efficiency. and the complexity of the experimental equipment
半導體探測器是上世紀六十年代以來得到迅速發展的一種新型核幅射探測器，其能量解析度高、線性響應好、脈沖上升時間短、結構簡單、探測效率高、操作方便，在核物理實驗和研究方面得到廣泛的應用。 -
Basing on the mcnp software, the author solved the matter by calculating the value of point to replacing the value of cell or surface. the research searched out a new means to solve similar matters. by using the studying result, the author programmed the gamma code, with the interface of window, which can simulate the course that a y - detector measures the radioactivity in soil and calculate the dose ratio and the chart of energy deposition
作者以以上方法為基礎開發出了就地譜儀模擬軟體gamma ，軟體基於mcnp軟體平臺，具有可視化介面，用於模擬譜儀現場測量，可視化窗口界面使用戶可以方便地調節探測器內部結構的幾何尺寸及窗材料、測量高度、射線能量及發射率、核素在土壤中的分佈規律等參數，方便工程技術人員的使用。 -
The basic principle of natural gamma - ray log is stated, the developing background, developing ways and developing situation of natural gamma - ray tools are introduced. the researching task of the paper is presented through analyzing the using situation and questions exsisted in inner natural gamma - ray tools, the researching work is started from three aspects, they are logging tool development, reliability design and reliability assuring methods, and the data processing methods, in the course of logging tool development, instrument indexes are presented based on the compatible property of sookbps telemetry system and environmental property, the analog measuring chanel and the interface circuit which realizing the compatible performance are designed according to the instrument mdexes. the detecto * design. the plateau property testing of the detector and the analysis of it ' s affecting factors are stated, the measuring property of the tool is discused, a new type of single chip microcomputer is selected when designing the interface circuit, and the laboratory experiments has fulfiled conmunieating standard signals between the interface circuit, the universal interface unit of sookbps telemetry system and also 500kbps telemetry system
本文首先概要介紹了石油測井的基本概念、方法、條件、最新進展、以及應採取的研發對策，論述了自然伽瑪測井的基本原理，介紹了自然伽瑪測井儀的發展背景、發展歷程和發展現狀，通過分析國內自然伽瑪測井儀的使用情況和存在的問題，提出了本文的研究任務。研製工作從測井儀研製、可靠性設計與可靠性保障技術、數據處理方法研究三個方面展開，在測井儀研製過程中，根據500kbps遙傳系統要求的配接性能和使用環境特徵，提出了主要儀器指標，並根據這些指標，設計了儀器模擬測量通道和實現這一配接性能的介面電路；論述了探測器的設計、坪特性影響因素分析及其測試，探討了儀器的測量性能；在設計介面電路時選用了新型單片機晶元，並與500kbps遙傳通用介面單元rtu 、 500kbpa遙傳系統實現了室內配接。 -
The object of single photon emission computed tomography ( spect ) is to reconstruct an unknown radioactivity distribution inside the body from projection data consisting of the number of photon collected on a collimated gamma camera. these projections are not simple line integrals but have point - spreads due to the imperfect collimator of the detector and attenuation due to the compton scattering. so
這種投影數據與透射ct中的數據不同，由於存在著光子的點擴散（由準直器引起）和衰減（由散射引起） ，已經不能用簡單的線積分來描述這個問題，因此相對于透射ct而言，這個領域將面臨很多困難。 -
This kind of detector has many merits as follows : fast response time, large output current, fine linear response, high sensitivity to many particles including neutron, charged particle, x - ray, gamma - ray, visible light, and being able to work at indoor temperature
這種探測器具有時間響應快，輸出電流大，對多種粒子如中子、帶電粒子、 x射線、射線、可見光都具有高靈敏度，而且響應的線性性好，可在室溫工作等特點。
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