高能光子

医用高能光子水吸收剂量测量规范TRS-277与TRS-398比较高营养密度食物提供营养素的百分率比能量供给百分率高。

Comparison between TRS-277 and TRS-398 : absorbed dose to water for clinical high-energy photon beams Foods with a high nutrient density are foods that contribute a high percentage of the nutrients in relation to the calories provided .

本文介绍了AAPM（美国医学物理家协会）TG-51号新报告，即高能光子和电子束参考剂量学议定书。

The paper introduced the latest report of AAPM ( American Association of Physicists in Medication ) which was written by Task Group 51 . The subject was the protocol for clinical reference dosimetry of high-energy photon and electron beams .

在光电离过程中，传播X射线的高能光子将电子从吸积盘内的原子中分离出去，这样损失掉的能量就会改变X射线的光谱特点。

Part of the difficulty is a process called photoionization , in which the high-energy photons conveying the x-rays strip away electrons from atoms within the accretion disk .

与此同时在纳米比亚上空，一个叫做“HESSII”的新式望远镜正在寻找高能光子。

Over in Namibia , meanwhile , a new telescope called HESS II is seeking out higher-energy photons .

原则上mA越高，X线量越大，接收信号越强，但是，KV波纹大，低能光子数量增加，到达探测器的高能光子数减少，对X线量影响更大。

That indicate KV ripple affect obviously mA value , the more X-ray photon number , the stronger of accepted signal , but the more KV ripple , the more low energy photon , the less high energy photon , the less photon that arrived at the detector .

放射治疗采用高能光子射线配合高能电子线，常规分割，照射剂量DT30～70Gy（中位数52Gy）。

Radiotherapy was given with high energy photon beams combined with high energy electron beams in conventional fractionation , with the total dose of 30-70 Gy ( median 52 Gy ) .

高能光子相对输出因子的测量与分析

Measurement and Analysis of Relative Output Factor for High Energy Photons

放射治疗高能光子束吸收剂量不同测定规程的比较

Comparison of protocols for the determination of absorbed dose for high-energy photon beams in radiotherapy

这个高能光子最可能的命运是再同一个原子核相作用。

The most probable fate for this high-energy photon is to interact with a nucleus again .

根据氦丰度的观测值给出了早期宇宙中暗能量和高能光子的约束范围。

The constraint ranges of the dark energy and high energy photon in early universe are given by the observation datas of the helium abundance . 4 .

现今随着抗辐射器件在商用和民用价值的扩大，抗辐射问题将成为我们新的挑战，而研究高能光子如何在半导体中输运，是抗辐射的重要内容。

Nowadays , with the expansion of radiation tolerance in commercial use , the problem of radiation tolerance will become our new challenge . And , studying how the energetic photons transfer in semiconductor is the important part of radiation damage research .

PET中高能γ光子的探测是图像重建过程中最基本、最重要的步骤。

Detection of high-energy photons in positron emission tomography ( PET ) is a basic , yet crucial stage to image reconstruction .

高能γ光子CsI（Tl）谱仪的研究与设计

Study and design on anti-coincidence high-energy γ photon spectrometer

因此，LHC在某种程度上被认为是一个高能的光子-光子或质子-质子对撞机。

Hence , the LHC can to some extend be considered as a high-energy photon-photon or photon-proton collider .

受激正负电子对湮灭中的高能γ光子的统计分布

Distributions of r-photon In Stimulated Emission Process of Electron-positron Pairs

Ag/TiO2催化剂可能被等离子体中的高能电子和光子活化，从而表现出优于TiO2的催化活性。

Titanium dioxide is a well-known photocatalyst , and Ag / TiO2 may can be activated by high-energetic electrons and photons produced by plasma . So it performs better than TiO2 in NOx reduction .

在人为和空间辐射环境中，高能粒子和光子引起的辐射损伤是电子系统性能退化甚至失效的主要原因之一。

The radiation damage induced-by energetic particles and photons is one of the main reasons of degradation or even failure of electronic systems in man-made and space radiation environment .

中高能重离子碰撞的高能光子测量及相关物理

Measurement of Energetic Photon Produced in Intermediate and Relativistic Energy Heavy Ion Collision and Related Problems