neutron beam 中文意思是什麼
neutron beam
解釋
中子射束-
In this article, the current status of epithermal neutron beams in the world is reviewed and also the design and construction plan of the epithermal neutron beam at the tsing hua open - pool reactor is reported
本文將介紹世界各國在設計建造超熱中子照射管之現況，以及目前在國內清華水池式反應器建造超熱中子照射管之進展及計劃。 -
The position and size of the monochromator, focusing curvature radii and tilting angles of the germanium focusing monochromator under different different take - off angle, size and divergency of the second collimator and intensity loss due to the use of it were determined. the neutron flux at different wavelength, under different reflection and take - off angle of the monochromator and divergency of the first collimator, were given. the simulation on the aperture used for limiting beam size in front of the sample showed that, smaller the size of the aperture and further the distance from the aperture to the sample, greater the loss of the intensity and more serious the spread of the beam along vertical direction at the sample position which makes the practical sampling volume greater than expected
用蒙特卡羅模擬方法對中子應力衍射譜儀的設計方案進行了優化研究，提出了一系列可供參考的數據：確定了單色器的位置、尺寸、垂直聚焦單色器在不同起飛角下的聚焦曲率半徑和傾角；討論了第二準直器的尺寸和發散，以及使用第二準直器造成的強度損失；給出了在不同單色器反射面、起飛角、中子波長和第一準直器發散度的情況下樣品處的中子注量率，以及多種組合情況下譜儀的解析度曲線；對限束方孔的尺寸、距離樣品遠近對強度損失和測量中的影響做了深入研究。 -
Beam optics design of intense neutron ge nerator for cancer therapy
用於治療癌癥的強流中子發生器束流光路設計 -
Radiation effects have been investigated up to - 30 dpa by the heavy ion irradiation simulation and positron annihilation lifetime techniques in the home - made modified 316l stainless steel and the commercially available stainless steel and tungsten, which are used as the beam window materials for the spallation neutron source in accelerator driven radioactive clean nuclear power system ( ads ). their radiation resistance properties are compared
本工作採用重離子輻照模擬和正電子湮沒壽命測量技術研究了加速器驅動潔凈能源系統（ ads ）散裂中子源束窗材料鎢、普通不銹鋼和國產改進型316l奧氏體不銹鋼在0 30dpa輻照劑量范圍的輻照效應，並對它們的抗輻照性能作了比較。 -
Heavy ion irradiation of 80 mev 12c or 85 mev 19f is used to simulate the proton and neutron irradiation of the beam window materials for ads. the irradiation effects are examined by the positron annihilation lifetime technique
在ads散裂中子源束窗材料輻照效應研究中，使用80mev的~ （ 12 ） c或85mev ~ （ 19 ） f離子模擬中子及質子輻照在束窗材料中產生的輻照損傷。 -
The optimal length of straight guides have been determined by calculating their uniform effect on neutron beam
在滿足導管出口中子束的均勻化效果前提下，模擬計算出彎導管后的直導管的最佳長度。 -
We have further studied equilibration with respect to isospin degree of freedom and proposed that the neutron - proton differential rapidity distribution is a sensitive probe to the energy dependence of the degree of equilibration : there exists memory effect in multifragmentation process ; the degree of equilibration at e = 400a mev qingfeng li, isospin in hics and k production at near threshold is higher than that at eiooa mev ; the average n / z ratio of imf reduces largely as beam energy increases from 100a mev to 400a mev
進一步地，利用不同的同位旋相關觀測量我們還研究了系統平衡程度問題，發現中子-質子差的快度分佈可以探測到入射能量達到400amev時反應系統的平衡程度比100amev入射能量時要高，中心快度區的系統基本達到平衡，而彈、靶快度區則存在明顯的入射道效應。
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