nuclear cross section 中文意思是什麼
nuclear cross section
解釋
核截面-
This paper deals with the monte carlo simulation of high - energy protons transport in silicon, in which the intra - nuclear cascade model is used to deal with proton nuclear reaction process. and the results of radiation effects of proton in silicon and p - seu ( proton induced single event upset ) cross section of some electronic devices are presented
本文用蒙特卡羅方法對高能質子（最高能量在500mev以上）在硅材料中的輸運過程進行了模擬，作了用核內級聯模型計算質子核反應的嘗試，計算了質子對硅材料的輻射效應及其對硅器件的單粒子效應。 -
The hall - life measurement of long - lived radio isotopes, cross section measurement of nuclear reaction, searching for super heavy elements, cosmic study and solar neutrino detection are the main components which have been discussed
包括放射性核素半衰期的測定、核反應截面的測量、超重元素的尋找、宇宙射線和太陽中微子性質等方面的研究工作。 -
In p - a drell - yan process, the incident quark will experience multiple collisions with different nucleons in the nucleus, which leads to the suppressed drell - yan cross section, in another words, the nuclear shadowing effect
在靶靜止系，對于p - a碰撞的drell - yan過程，入射夸克要與原子核中的不同核子發生多次碰撞，使得總的微分截面被壓低，這就是遮蔽效應。 -
In this paper, the color dipole approach in the target rest frame is presented and the ratio of the drell - yan cross section per nucleon for an 800 gev proton beam incident on a variety of nuclear targets are calculated and the results are compared with fermilab e772 and e866 experimental data. it is shown that without considering the energy loss effect, the calculated results can fit rather well with experimental data
本文介紹了靶靜止系中色偶極模型，用色偶極模型計算了800gev質子與原子核碰撞的drell - yan過程的微分截面比，並與e772和e866實驗結果進行了比較。發現：不考慮能量損失，只計及p - a碰撞中的遮蔽效應，理論結果就與實驗符合的很好。 -
Mastering the output format of covariance of neutron cross section in endf / b - 6 evaluated nuclear data library, clearly understanding the meaning of each physical quantity, grasping the mathematical methods pf covariance for experimental nuclear data and evaluated nuclear data, a set of evaluation processing method was deduced from the meaning of cross sections and errors. and then a program was developed for evaluating and processing the covariance matrix of experimental data, which are output in the endf / b - 6 format
在熟悉endf / b - 6評價中子核數據庫協方差文檔的格式要求，確定各個量的物理意義，並掌握實驗和評價數據的協方差數學處理方法的基礎上，由截面數據及截面誤差的物理意義，推出了一套合適的評價處理方法，最後編寫了按endf / b - 6格式輸出的協方差數據評價處理程序，作為中國評價中子核數據庫（ cendl ）協方差文檔的數據輸出程序。 -
Simultaneously, enhancement of the cross section must has had been played an important role in astrophysical nuclear process. we investigate the s - process of nucleosynthesis of heavy element of astrophysics and give a group of analytic solutions for the s - process. to check up the analytic solutions, we calculate the n distributing of the heavy element of s - process in solar system and the result is good agreement with astronomic measurement
我們研究了天體重元素核合成的s ?過程，給出了s ?過程網路方程的一個解析解，作為對本文解析解的檢驗，我們計算了太陽系的s ?過程重元素豐度的n分佈，計算結果與天文觀測符合的較好；另外，我們還計算了s ?過程的典型分叉點~ （ 85 ） kr處各個核素的豐度變化，與已有的結果符合的較好。 -
We give a mathematical proof for the model - approximately independence of anc coefficient. combining a concrete nuclear reaction, we check up the model - approximately independence of anc coefficient with numeric calculation. under the el transition condition, a expressions with anc coefficient to compute the cross section of radiative capture reaction has been given in this thesis
我們對anc系數的近似模型無關性給出了一個數學形式理論證明，並結合具體的核反應，利用數值計算驗證了anc系數的近似模型無關性；在e1躍遷情況下，我們給出了一個用anc系數計算輻射俘獲反應截面的計算公式。
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