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bremsstrahlung n.【物理學】(原子彈)韌致輻射。

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If metal shielding exceeds a centimeter , electromagnetic protection declines drastically , he explains , because impacts by energetic particles can cause strong electromagnetic bremsstrahlung radiation that can result in extensive damage . ( bremsstrahlung is german for the “ braking radiation ” produced when a charged particle decelerates rapidly as a result of collision with another body 他進一步解釋,金屬防護層厚度超過一公分時,電磁防護能力將大幅降低,因為受高能粒子撞擊時,會形成強大的制動輻射,造成更大的損害(制動輻射是由于帶電粒子碰撞其他物體而突然減速所造成) 。

Al . first applies the color - dipole approach to drell - yan process , which says that in the target rest frame the drell - yan process can be viewed as bremsstrahlung . rather than parton annihilation . according to factorization theorem , the drell - yan cross section can be expressed in terms of the same dipole cross section that appears in deep inelastic scattering 雖然高能反應的微分截面是洛侖茲不變的,但其部分子解釋卻是與坐標系有關的,最近, b . z . kopeliovich等提出靶靜止系中drell - yan過程的色偶極模型,他們認為,在靶靜止系高能碰撞的drell - yan過程是一韌致輻射過程而不是正反夸克對的湮滅。

The breakdown process of propellant gas was studied , calculation method of breakdown threshold value was obtained , the breakdown threshold value of hydrogen and air were calculated ; the inverse bremsstrahlung absorption process was studied , calculation method of inverse bremsstrahlung absorption coefficient of hydrogen and argon were calculated 分析了激光對工質的去穿遷程,得到了去穿閾值的計算方法,計算了激光對空氣和氫氣的擊穿閾值;對工質中激光的逆初韌致吸收過程進行了研究,推導了逆韌致吸收系數的計算公式。

In this article , physical equations and relative three - dimensional finite - difference formulae in cylindrical and spherical geometries were derived and two - and three - dimensional code in cylindrical and spherical geometries for direct - drive by laser was made , based on the lared - s code in planar geometry . it consisted of the processes such as the inverse bremsstrahlung absorption , electic heat conduction and fluid dynamics 本論文在lared - s程序平面版本基礎上,推導了三維柱和球幾何中激光驅動的物理方程和相應的差分方程,編制了二維和三維柱和球幾何中激光驅動流體不穩定性的lared - s程序版本,主要物理過程包括:激光逆軔致吸收、電子熱傳導和流體運動。

In the framework of thermofied dynamics it is shown that , at finite temperature the final state in the bremsstrahlung process is just the eigenstate of the annihilation thermal - field operator which indicates that it is a coherent state 運用熱場動力學的相關知識,我們發現有限溫度下的韌致輻射的末態恰好是熱場湮滅算符的本征態,從而說明熱qed下的韌致輻射是一個相干態。

It is convenient for x - ray tube excited source to detect multi - component on site due to the advantages of high excitation flux , easy protection , and characteristic x - ray and continuous bremsstrahlung spectrum included in its exciting spectra X光管激發源具有活性強、易于防護等優點,產生的激發譜包括特征x射線和連續的軔致射線譜,方便現場測定多元素。

Sl is a process from molecular emission to bremsstrahlung . in the fifth chapter , we record the sl image resulted from ultrasonic cavitation and studied the relationship between the sl intensity and ultrasonic intensity 液體在超聲的作用下產生的聲致發光強度與驅動超聲壓強的大小有關,經多次試驗發現液體中的超聲壓強與聲致發光的強度近似呈線性關系。

In electron storage rings , the interactions by beams with residual gas produce the bremsstrahlung which has not been sufficiently understood and is the main course of the loss of the beam 由于加速器產生高能粒子,在實際應用中必須面臨輻射防護方面的問題。加速器儲存環直線節中殘余氣體產生的軔致輻射是同步輻射裝置中光束線防護的重要課題之一。

The simulating temperature values at collapse are almost equal to each other for different gas bubbles at the threshold pressures , however , when the pressure above the threshold one , the sl mechanism satisfies the bremsstrahlung 通過對含有單一氦、氬、氪的氣泡進行聲致發光閾值研究,發現隨著氣體原子質量的增加,氣泡的聲致發光閾值降低。

In the paper , we analyze the reason and effect of the bremsstrahlung , calculate the dose in the linear section of the storage rings , and propose the defense project to shield it 針對北京正負電子對撞機( bepc和bepcii )儲存環直線節結構特點,分析其中殘余氣體產生的軔致輻射,計算該氣體軔致輻射所產生的劑量并提出防護措施。

In the neon - filled franck - hertz experiment , the experimental value gravely deviates from the value of the first excited state because of the effect of highly excited state and bremsstrahlung 摘要在充氖夫蘭克赫茲實驗中,由于高激發態和軔致輻射的影響使實驗值嚴重偏離第一激發態值。

Basing on this theory , in this paper , a new feyn - man rule for directly calculating the retarded , advanced green functions and the bremsstrahlung in thermal qed are discussed 本文在此基礎上分別討論了直接計算推遲、超前格林函數的一種新費曼規則和熱qed中的韌致輻射這兩方面的內容。

In the neon - filled franck - hertz experiment , the experimental value gravely deviates from the value of the first excited state because of the effect of highly excited state and bremsstrahlung 在充氖夫蘭克赫茲實驗中,由于高激發態和軔致輻射的影響使實驗值嚴重偏離第一激發態值。

The paper theoretically analyzes the bremsstrahlung influence to the experimental value , offering a way of deducting the bremsstrahlung influence to the experimental value 從理論上分析了軔致輻射對實驗值的影響,并給出了扣除軔致輻射對實驗值影響的方法。

It was pointed out that in the target rest frame , dy dilepton production looks like bremsstrahlung , rather than parton annihilation 在靶靜止系,輕子對產生的drell - yan過程應看作是韌致輻射,而不是部分子湮滅。

The ferrari and the frank experiential formula are used to calculate the dose of the bremsstrahlung , so is the fluka programmer 計算采用ferrari和frank兩種經驗公式相結合,并與fluka程序計算的結果進行了比較。

So the study of bremsstrahlung in equilibrium will be helpful to understand the collective effects and thermodynamic property of qgp 因此在平衡態下韌致輻射的研究將有助于人們了解qgp的集體效應和熱力學性質。

The ratio of the microwave radiation to the x - ray bremsstrahlung radiation is dependent on the density in the emitting region 微波輻射與x射線韌致輻射的比值與發射區的密度有關。

In this thesis , we investigates the bremsstrahlung processes in thermal qed and its relation with coherent state 本文考察了熱qed中的韌致輻射以及它與相干態之間的聯系。