nuclear neutron 中文意思是什麼
nuclear neutron
解釋
核中子-
There has been many papers to discuss the in - medium quark and gluon condensates in nuclear matter which use the models with su ( 2 ) l su ( 2 ) r sym - metry. now, we make use of the chiral model su ( 3 ) l su ( 3 ) n including the baryon octet to discuss the quark condensate < qq > in strange matter, where q is an up or down quark field. on the one hand, from the experimetal data, it is found that < qq > vac = - ( 225 25mev ) 3, on the other hand, with the hellmann - feynman theorem, quark condensate can be evaluated on the hadronic level. in this paper, we will investigate the quark condensate in strange matter with the chiral symmetry su ( 3 ) l x su ( 3 ) rspontaneous breaking lagrangian to obtain the variation of the quark condensate in the strange matter when the baryon number change. it can be applied to understand the neutron stars when the neutron star are considered to be constructed by the strange matter. because nertron stars are homogeneous and at very low temperature, we will use the mean - field approximation and zero temperature throughout this paper
鑒于已有大量文獻討論了核物質中的夸克凝聚，本文將討論在奇異物質中的夸克凝聚。而在介質中的夸克凝聚的基本公式可由hellmann - feynman理論導出，所以運用手征對稱自發破缺拉氏量以及平均場近似，我們就可以討論在奇異物質中的夸克凝聚，由所計算的結果表明： （ 1 ）奇異物質中的夸克凝聚隨奇異物質密度的增大而單調減小。 （ 2 ） -凝聚的出現對衰減率有影響。 -
The math - model of predicting the residual nuclear radiation for neutron bomb nuclear explosion is studied
摘要研究了中子彈核爆炸剩餘核輻射估算的數學模型，給出了地面放射性沾染、通過和停留劑量估算的數學模型。 -
In analyzing the neutron active detection, the neutron multiplication in the nuclear warheads induced by outer neutron source with different neutron energys is studied with numeral simulation, and the feasibility of through counting neutrons to determine the presence of high enrichment uranium ( heu ) in nuclear warhead has been proved. the method of detecting the warhead which contains heu pit by counting the released neut rons whose energy is higher than that of source neutron is studied. the feasibility of this method has been studied
對幾種主動探測核彈頭方法進行的研究中，首先對不同能量各向同性外源中子照射核彈頭的中子增殖行為進行了數值模擬，檢驗了用外源中子照射核彈頭后，通過測量瞬發中子在核彈頭中的增殖量，來證明核彈頭中高濃鈾存在的可行性；研究了用能量低於1mev的外中子源照射核彈頭，用測量核彈頭中裂變產生的高於源中子能量中子數的方法探測核彈頭，通過數值模擬分析了可行性。 -
Specifiation of nuclear fuel rods for miniature neutron source reactor
微型中子源反應堆核燃料棒技術條件 -
Third, other nuclear quanlities ( such as fission caused by slow neutron, odd - even difference of frequency of bandcrossing etc ) were researched briefly, no other than pairing correlation, their results represented a series of odd - even differences
（ 3 ）對原子核的其它性質（如慢中子引起的裂變，帶交叉頻率的奇偶差等）的奇偶差也作了簡要的研究，正是由於對關聯的存在，其他性質也表現出一系列的奇偶差。 -
The results show that binding energies per nucleon at each density and various asymmetry parameters fulfill the empirical parabolic law and the asymmetry energy is density dependent. it is found that both scalar and vector potentials of neutron in the neutron rich nuclear matter become stronger although the isospin dependence is not stronger. we compare our results with those in a simple method, where the dbhf nucleon self - energies are extracted from the momentum dependence of the single - particle energy
首先我們要求在每一個密度及各種不對稱系數的核物質中，相對論平均場（ rmf ）計算出的核子標量與矢量自能與dbhf計算出的標量與矢量自能一致，從而得到在rmf下的密度依賴的有效介子核子耦合常數，包括同位旋標量介子。 -
In - core instrumentation for neutron fluence rate measurements in nuclear reactors
核反應堆中子注量率測量堆芯儀表 -
Nuclear reactor instrumentation - wide range neutron fluence rate meter - mean square voltage method
核反應堆儀器儀表.寬范圍中子通量比率儀.主要平方電壓法 -
Can stop the star from further collapsing. note : again, neutron degenerate pressure does not come from nuclear burning. it can support a neutron star from further gravitational contraction forever
則足以防止恆星進一步收縮同電子簡並壓力一樣中子簡並壓力並非來自核子反應它可永遠?抗恆星的引力收縮。 -
The nuclear fissile reaction system, which provides nuclear energy or neutrons, theoretically demands its criticality safety and neutron energy spectrum to be predicated. generally, those are realized by calculating the k - eigenvalue problem
對于提供核能源或中子源的核裂變反應系統，需從理論上給出它的臨界安全性和中子能譜，通常通過k本徵值問題的計算來實現。 -
The average abundance distributions of heavy elements in metal - poor stars can provide fairly direct and detailed information on the nucleosynthesis in every stage after the formation of galaxies. furthermore, it can put more accurate constraints on the chemical evolution of neutron - capture elements. the solution to this problem will have important effect on the solution to a series of problems about nuclear astrophysics and the galactic evolution
貧金屬星的中子俘獲元素豐度分佈能提供星系形成后各個階段核合成的較為直接和詳細的信息，並為星系化學演化的研究提供更為準確的約束，這一問題的解決將對核天體物理及星系化學演化的一系列問題的解決產生重要影響。 -
Perhaps nuclear reactions, such as neutron capture
也許是某種核反應，例如，中子捕獲？ -
The calibration for petroleum nuclear logging tool part 4 : the calibration for compensated neutron tool
石油核測井儀刻度.第4部分:補償中子測井儀刻度 -
Neutron coincidence counting is widely used in the authentication and management of nuclear material
摘要中子符合計數在核材料認證和管理中有著廣泛的應用。 -
When the energy distribution of secondary neutron are represented by evaporation spectrum ( lf = 9 ), care must be taken in describing the nuclear temperature near the threshold
通過分析發現，評價次級中子能譜數據所採用的蒸發譜模型大都忽略了能級密度參數與激發能之間的關聯。 -
Nuclear criticality safety for fissile materials outside reactors safety requirements for the use of fixed neutron absorbers
反應堆外易裂變材料的核臨界安全固定中子吸收體的應用安全要求 -
The target studied in this paper is one of the most important components in the ads. coupling the two innovative fields in the nuclear scientific and technological circles that are accelerator and sub - critical reactor. the physical function of this part is be as the neutron source, accepting the medium or high energy proton, breeding spallation reaction, arising the self - sustaining nuclear fission and generating the power
本文所研究的靶件作為該系統最重要的關鍵部件之一，耦合核科技界的兩大創新領域-高功率質子加速器和次臨界堆，該靶件的物理作用主要是接受中、高能質子，發生散裂反應，產生中子源，引發持續鏈式反應，產生能量。 -
All cross sections of neutron induced reaction, elastic scattering angular distribution, neutron energy spectrum and double differential cross sections were calculated by using optical model and the semi - classical model of multi - step nuclear reaction processes based on the hauser - feshbach and exciton model in the energy region up to 20mev
應用光學模型和以復合核平衡態理論（ hauser ? feshbach理論）及激子模型為基礎的核反應多步過程的半經典理論，計算了當中子入射能量低於20mev時n + ~ （ 112120 ） sn反應的所有中子入射截面、彈性散射角分佈、出射中子能譜以及出射中子雙微分截面。 -
It shows that visualbusl. o is a reliable code system for neutron burnup and transport calculations ; hendl1. 0 / mg is competent for the calculating work for nuclear system although there some improvement is needed for several nuclides " cross sections
對hendl1 . 0 mg ，校驗測試顯示除部分核素的信息需要進一步研究改進外該數據庫可用於核能系統的模擬計算。對visualbus1 . 0的測試顯示，該程序的的輸運燃耗計算基本可靠。 -
A significant difference on the scalar self - energy and effective mass of neutrons in asymmetric nuclear matter, especially in neutron matter, is observed. the difference would result in an unreasonable sigh of the extracted effective couplings for isovector mesons
利用這樣的耦合常數在rmf近似下計算的核物質的結合能與dbhf結果會有偏離，因而得到的核狀態方程也會有偏離，如在飽和點處結合能有小於2的偏差。
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