佰德利棋牌

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            铅板能帮助人体抵挡多少辐射?
            来源:http://weishengz.com 发布时间:2019-02-04

            如今各个医院的放射科室、化工厂等辐射大的地方,铅板是他们的必备品,一般多采取屏蔽防护和距离防护两种原则。屏蔽防护是指使用原子序数比较高的物质,这里我们常用铅板或含铅的物质,来作为屏障以吸收不必要的x线的更好材料。距离防护是指利用x线曝射量与距离平方成反比这一原理,通过增加x线源与人体间距离以减少曝射量。通常从x线管到达人体的x线,有原发射线和继发射线两类,继发射线是原发射线照射穿透其它物质过程中发生的,其能量较原发射线小,便影响较大。通常采用x线管壳、遮光筒和光圈、滤过板、荧屏后铅玻璃、铅屏、铅胶皮围裙、铅手套以及墙壁等,来进行屏蔽防护。增加人体与x线源的距离以进行距离防护,是简易但有效的防护措施。
            Nowadays, in radiation departments, chemical plants and other places with large radiation, lead plate is their necessary product. Generally, shielding protection and distance protection are two principles. Shielding protection refers to the use of substances with high atomic number. Here we often use lead plates or substances containing lead as barriers to absorb unnecessary X-ray. Distance protection refers to the use of the principle that X-ray exposure is inversely proportional to the square of distance to reduce the exposure by increasing the distance between X-ray source and human body. Generally, there are two types of X-ray from the X-ray tube to the human body: primary ray and secondary ray. Secondary ray occurs in the process of primary ray penetrating other substances, and its energy is smaller than primary ray, so it has a greater impact. Usually, X-ray tube shell, light shield and diaphragm, filter plate, lead glass behind screen, lead screen, lead rubber apron, lead gloves and walls are used for shielding protection. It is a simple but effective protective measure to increase the distance between human body and X-ray source for distance protection.
            山东燃气锅炉
            更有效的射线防护材料主要有两种:一种是铅板、一种是硫酸钡。
            There are two kinds of most effective radiation protection materials: one is lead plate, the other is barium sulfate.
            铅板指用金属铅轧制而成的板材.铅板具有很强的防腐蚀,耐酸碱,耐酸环境施工、医用防辐射,X光室,CT室射线防护、加重、隔音等许多方面,那么铅板防辐射的原理是怎样的呢?
            Lead plate refers to the plate rolled with metal lead. Lead plate has strong corrosion resistance, acid and alkali resistance, acid environment construction, medical radiation protection, X-ray room, CT room radiation protection, aggravation, sound insulation and many other aspects. What is the principle of radiation protection of lead plate?
            1.子穿透力弱,一张纸就可以挡住;铅板可以完全挡住,防护α辐射不要误食,沾污皮肤。
            1. The penetration is weak, a piece of paper can be blocked; the lead plate can be completely blocked, and the protection of α radiation should not be ingested by mistake, so as to contaminate the skin.
            2.线,穿透力中等强,一般的铅板可以挡住绝大多数射线,但通常防护β射线时加一层较低原子序数的阻挡物,以免产生轫致辐射。
            2. The line has medium strong penetration. The general lead plate can block most of the rays, but usually a layer of lower atomic number barrier is added to protect the β ray to avoid bremsstrahlung.
            3.线是伴随α、β产生的,具有较强的穿透性.一定厚度铅板可以阻挡一定比例强度的γ射线,放射性强度随铅板厚度按指数规律衰减,理论上是不能完全阻隔的。
            3. The line is generated with α, β, and has strong penetrability. A certain thickness of lead plate can block a certain proportion of intensity of γ ray, and the radioactive intensity decreases exponentially with the thickness of lead plate, which can not be completely blocked in theory.

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