大面积Si（Li）X射线探测器

沈浩元; 林荷莲

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大面积Si（Li）X射线探测器

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Si(Li)X射线探测器在核技术应用领域十分有用,我们制成的系列化的高分辨率Si(Li)X射线探测器,器件最大灵敏面积为200mm^2,对5.9keV最好能量分辨率(FWHM)为216eV,能量分辨率的平均值是223eV,另一只28mm^2Si(Li)探测器的最好能量分辨率为139.6eV。

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《核技术》|1990年第8期|456-459|共4页
作者
沈浩元; 林荷莲;
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原文格式 PDF
正文语种 CHI
中图分类 TL816.1;
关键词
X射线; 探测器; 高分辨率; Si; Li;

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1. 大面积Si(Li)X射线探测器 [J] . 袁祥林 ,李志勇 ,洪秀瑟 . 核电子学与探测技术 . 1989,第002期
2. 便携式Si（Li）X射线探测器的研制 [J] . 温良弼 ,张孝征 . 四川大学学报：自然科学版 . 1996,第005期
3. BACKGROUND： Vibrio vulnifi cus inside the body could activate the NF-!B signaling pathwayand initiate the inflammatory cascade. The lung is one of the earliest organs affected by sepsisassociated with acute lung injury. High mobility group protein B1 （HMGB1） is an important late-actingpro-infl ammatory cytokine involving in the pathophysiology of sepsis. It is also involved in the injuryprocess in the lung, liver and intestine. There has been no report on the involvement of HMGB1 inVibrio vulnifi cus sepsis-induced lung injury.METHODS： Sixty rats were randomly divided into a normal control group （group A, n=10） anda Vibrio vulnificus sepsis group （group B, n=50）. Sepsis was induced in the rats by subcutaneousinjection of Vibrio vulnificus （concentration 6×108 cfu/mL, volume 0.1 mL/100g）） into the left lowerlimbs. The rats in group B were sacrifi ced separately 1, 6, 12, 24, and 48 hours after the infection.Their lungs were stored as specimens, lung water content was measured, and lung pathology wasobserved under a light microscope. The expressions of the HMGB1 gene and protein in the lungswere detected by RT-PCR and Western blot. Data were analyzed with one-way analysis of variance（ANOVA） and the LSD method for pair-wise comparison between the two groups. P〈0.05 wasconsidered statistically signifi cant.RESULTS： Compared to group A （0.652±0.177）, HMGB1 mRNA expression in the lungs ofgroup B was signifi cantly higher at 0 hour （1.161±0.358, P=0.013）, 24 hours （1.679±0.235, P=0.000）,and 48 hours （1.258±0.274, P=0.004）（P〈0.05）, and peaked at 24 hours. Compared to group A（0.594±0.190）, HMGB1 protein expression at 6 hours （1.408±0.567, P=0.026） after infection wassignificantly increased （P〈0. 05）, and peaked at 24 hours （2.415±1.064, P=0.000） after infection.Compared to group A （0.699±0.054）, lung water content was significantly increased at 6 hours（0.759±0.030, P=0.001）,12 hours （0.767±0.023, P=0.000）, 24 hours （0.771±0.043, P=0.000） and 48hours （0.789±0.137, P=0.000） after infection （P〈0.05）. Compared to group A, pathological changesat 12 hours in group B indicate marked pulmonary vascular congestion, interstitial edema andinfl ammatory infi ltration. Alveolar cavity collapse and boundaries of the alveolar septum could not beclearly identifi ed.CONCLUSION： Vibrio vulnifi cus sepsis can lead to injury in rat lungs, and increased HMGB1expression in lung tissue may be one of the mechanisms for injury from Vibrio vulnifi cus sepsis. [J] . Qiao-meng Qiu ,Zhong-wang Li ,Lu-ming Tang . 世界急诊医学杂志(英文) . 2011,第4期
4. “Green Technology”: To Solvea Pressing Economic and Ecological ProblemProf. Gunter Larisch graduated from the Technical University ofBerlin. Since 2018, he has been engaged in research work relatedto the fabrication, characterization, and application of energyefficient,high-speed vertical-cavity surface-emitting lasers(VCSELs) at the Center of NanoPhotonics. He has won the SPIEPhotonics West “Green Photonics Award” three times. In 2019,he joined Changchun Institute of Optics, Fine Mechanics andPhysics through the CAS President’s International FellowshipInitiative (PIFI), and started to work in the Bimberg Chinese-German Green Photonics Research Center.Question: Please introduce your motherland to Chinese readers.Germany is a federal republic consisting of 16 “states” havingall their own parliaments, governments and legislation indefined areas. The members of parliaments are elected ingeneral elections and are either paid for part time or fully timework. There is a distribution of power between the republic andthe states. Education including universities is state business.Defense and foreign affairs are republic business. Here aresimilarities to the Chinese provincial system. The populationand the population density of German cities is much lower—An interview with Gunter Larisch, expert fromChangchun Institute of Optics, Fine Mechanics and Physics [J] . Gunter Larisch . 国际人才交流 . 2020,第11期
5. 大面积Si（Li）探测器 [J] . 沈浩元 . 核技术 . 1995,第009期
6. 制造Si(Li)x射线探测器的进展 [C] . 王国干 . 全国核电子学与核探测器学术会议 . 1984
7. 大面积X射线探测器封装结构设计分析 [A] . 蒋鹏 . 2016

大面积Si（Li）X射线探测器

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