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neutron n.【物理學】中子。n.-ics 中子(物理)學。

neutron bomb

The researchers used fast neutrons to irradiate mouse embryos between the blastocyst stage and the beginning of somite formation . 研究人員用快中子照射在胚泡期和體節形成開始之間的小鼠胚胎。

The model comprising accretion onto a neutron star or black hole companion must still be considered a favored hypothesis . 在中子星或黑洞伴星上發生吸積的模型,仍應看成是一個有價值的假說。

In the first place, the fractional decrease in neutron energy per collision is, on the average, greatest for light nuclei . 第一,平均來說原子核愈輕,每次碰撞后中子的能量損失分額就愈大。

At the briefest glance at a table of elementary particles, we can see straight away that the neutron and proton are very similar . 查閱基本粒子表,立刻就可看出,中子和質子非常相似。

The measurement is complicated by the presence of a component due to fast and high-energy neutrons of extraterrestrial origin . 測量由于地球外部產生的快速高能中子而變得復雜化了。

For example, we know that within a certain time period neutrons decay into protons and some other particles . 試舉一例:我們知道,中子在一定的時間里會衰變成質子和某些其他粒子。

This conclusion is consistent with the idea that all atomic nuclear are built wholly of neutrons and protons . 這個結論與如下的思想是一致的:所有的原子核全部由中子和質子組成。

Essentially, all the neutrons and part of the gamma rays are emitted in the actual fission process . 從根本上說,所有的中子和一部分射線都是在裂變實際的過程中放射出來的。

The most useful indicator in the system is given by the neutron count of pure water samples for blank measurements . 測量系統最有用的指示是間隔測量純水樣品的中子計數率。

A rudimentary description of a nucleus consists in specifying the number of protons and neutrons it contains . 對某個原子核的初步描述,在于確定它所含的質子和中子的數目。

This device is absolute in the sense that it does not require calibration in a known field of neutrons . 從不必要在已知的中子場中進行刻度的這意義上講,這種裝置是絕對的。

It is for this reason that hydrogen, e. g. as water, is an important constituent of neutron shields . 由于這一緣故,氫(例如水)便成為中子屏蔽體的一個重要組成部分。

In certain fusion processes, among nuclei of the hydrogen isotopes, neutrons of high energy are liberated . 在氫同位素原子核中的某些熔合過程中,會釋放出高能中子。

Two protons brought together will also fly apart-if neutrons are not present to hold them together . 兩個靠攏的質子也會飛開--如果不是有中子把它們保持在一起的話。

The modes of interaction of neutrons with matter are quite different from those experienced by gamma-ray photons . 中子與物質的相互作用方式和射線光子完全不同。

The interval is two mass units because these isotopes of the elements differ by two neutrons . 因為這些元素的同位素相差兩個中子,所以其間隔為兩個質量單位。

There appeared to be no gross distortions of the neutron spectrum expect at energies below 2 mev . 除了2兆電子伏以下的能量外,中子譜似乎不存在顯著的畸變。

Standard field procedures are employed in taking samples for analysis by delayed neutron determinations . 采用標準的實際操作規程為緩發中子測定分析取樣。

Indirect ionization by neutrons can also result from fission of plutonium or uranium isotopes . 通過使钚或鈾同位素裂變,中于也能產生間接的電離作用。