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多普勒展宽效应对康普顿相机成像分辨的影响

原子核物理评论 2021年第2期38卷 215-220页

作者：宋张勇张秉章于得洋中国科学院近代物理研究所兰州730000 中国科学院大学核科学与技术学院北京100049 南华大学核科学与技术学院湖南衡阳421001

在重离子癌症治疗中,康普顿相机是一种非常有应用前景的在线监测离子射程的技术。由于康普顿相机使用晶体探测器来确定伽马射线的位置和沉积能量,因此对这些物理量的测量误差会影响康普顿相机的成像分辨率。除了这些测量误差,多普勒展... 详细信息

在重离子癌症治疗中,康普顿相机是一种非常有应用前景的在线监测离子射程的技术。由于康普顿相机使用晶体探测器来确定伽马射线的位置和沉积能量,因此对这些物理量的测量误差会影响康普顿相机的成像分辨率。除了这些测量误差,多普勒展宽效应也会对相机的成像分辨率产生影响。本文使用开源Geant4软件包分别对150和511 keV的伽马射线在几种晶体材料中产生的多普勒展宽效应进行了角分辨模拟。通过对反投影算法的优化和对成像空间中体素的细化,使得康普顿相机的成像分辨率能够达到1.0 mm以上。本工作还基于角分辨标度,推导了一个可快速估计康普顿相机成像分辨率的近似公式。

关键词：重离子治癌多普勒展宽康普顿相机 Geant4模拟

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4-11 Determination of Target Thickness and Luminosity from Beam Energy Losses at HIRFL-CSRe Internal Target

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IMP & HIRFL Annual Report 2015年第1期 205-206页

作者： Shao Caojie yu deyang Lu Rongchun Xue Yingli Wang Wei Yang Bian Zhang Mingwu Liu Junliang Song Zhangyong Cai Xiaohong 不详

The experiments with an internal target at a storage ring have many advantages. However, it is difficult to determine the absolute cross section of a reaction where luminosity cannot be simply established through macroscopic measurements. Here we present an experimental determination of the effective target thickness from the beam energy losses at the internal target in HIRFL-CSRe. The measurements here are expected to provide the accurate target thickness and luminosity for the absolute cross-section study on future internal target experiments, and also provide some reference values for the study of beam loss mechanism of the heavy ion at HIRFL-CSRe.

关键词： HIRFL-CSRe Internal Target

X-ray Measurement of Heavy Mental Induced by 1.0- 1.5 MeV Electrons at an Electrocurtain

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IMP & HIRFL Annual Report 2011年第1期 188-188页

作者： yu deyang

Investigation of the Lubrication Failure Mechanisms of Several Thin Solid Films

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Investigation of the Lubrication Failure Mechanisms of Sever...

Photon-ion Coincidence System for HIRFL-CSRe Internal Target

第三届摩擦疲劳学国际会议

作者： Qunji Xue deyang yu State Key Laboratory of Solid Lubrication Lanzhou Institute of Chemical Physics Chinese Academy of Sciences Lanzhou 730000 P. R. China

＜正＞The lubrication failure mechanisms of several physical vapor deposited （PVD） thin solid films, especially of the ones for precision ball bearing and harmonic drive applications, have been investigated. The pro... 详细信息

关键词： PVD solid films Ball bearing: Harmonic drive Lubrication failure mechanism

来源： cnki会议评论

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IMP & HIRFL Annual Report 2018年第1期 199-200页

作者： Wang Wei Shao CaoJie yu deyang Liu Junliang Yang Bian Wang Jianguo Zhang Ningtao Gao Bingshui Ma Peng Yang Herun Cai Xiaohong 不详

A Photon-ion coincidence system for projectile X-ray emission in ion-atom collisions in HIRFL-CSRe internal target is *** system consists of X-ray detectors,ion detectors,signal process electronics and data acquisition(DAQ)*** photon detector which used for detecting the low energy X-rays are combined with HpGe,Si(Li),Silicon drift detector(SDD)and crystal spectrometer(CS).The ion detectors which used to measure charged-particle trajectories are multi-wire proportional chamber(MWPC).The main purpose of the signal process electronics which using standard NIM electronics is converting the analogue signals from the photon and ion detectors into a format suitable for physics *** DAQ system is based on VME bus and the maximum integrated data acquisition system(MIDAS)developed at Paul Scherrer Institute in Switzerland and TRIUMF in Canada.

关键词： system coincidence Internal

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电子在平行玻璃板中的导向效应(英文)

IMP & HIRFL Annual Report 2012年第0期 214-215页

作者：刘俊亮 yu deyang Xue Yingli Cai Xiaohong

Interaction between charged particles and insulating capillary has become more and moreimportant in the fundamental study of ion-surface collision ***'s more,it alsoprovides a possible new method to produce micro/nano meter sized beams,which may bewidely used in *** attention has been paid to the transmission of HCIs though insulating capillaries[1-5].However,in contrast to

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基于红外检测的自动防盗报警装置的研制

电子技术（上海） 2008年第1期35卷 11-12页

作者：滕志军于德洋东北电力大学信息工程学院吉林132012

文章利用人体红外传感器,设计一种与电话线连接、操作简单、工作稳定可靠的远程智能防盗报警装置,并从基本工作原理、电路构成、功能特点等方面对其进行详尽介绍。

关键词：防盗报警传感器红外检测

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Angular Distribution of Lyman-1 Transition Following Nonradiative Electron Capture into Xe^53+Ions

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IMP & HIRFL Annual Report 2019年第1期 77-78页

作者： Yang Bian yu deyang Cai Xiaohong Shao Caojie Xue Yingli Wang Wei Zhang Mingwu Liu Junliang Song Zhangyong Wu Yehong Lu Rongchun Ruan Fangfang 不详

Radiative electron capture(REC)and nonradiative capture(NRC)are two competing mechanisms in relativistic collisions of highly charged ions with atoms[1].REC means electron transfer from target to projectile with the e... 详细信息

关键词： Transition satisfying radiative

Progress of Atomic & Molecular Spectroscopy Group in 2017

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IMP & HIRFL Annual Report 2017年第1期 64-64页

作者： yu deyang Cai Xiaohong 不详

A beam of 95 MeV/u Ni19+ions was stored in CSRe,and collided with the internal jet-targets of hydrogen,argon,krypton and *** X-rays produced in the collisions were detected by two Silicon Drift Detectors(SDD)and four High-purity Germanium *** K satellite and the hypersatellite lines of the projectile ions are clearly *** primary data analyze show that the double-to-single K-shell ionization of the projectile ions increases linearly with the factor κ=Z/v,where Z is the atomic number of the target and v is the projectile *** experimental data in 52-197 MeV/u Xe^(54+)ions with krypton collisions were thoroughly analyzed[1].Energy shifts of the Kα_(1,2)^(s) ,Kα_(1,2)^(h,s) and Kβ_(1,3)^(s) transitions are ***,the average number of the spectator L-vacancies presented during the X-ray emission is *** experimental results are compared with a relativistic coupled channel calculation performed within the independent particle *** theory agrees with the present experiment very well at the higher energies,but it fails to reproduce the experiment data at low energies and the reason of this deviation is not clear yet.

关键词： purity deviation thoroughly