射线的种类及特性
    2018-9-24 9:11:55  文章来源:http://www.jnlzsb.com
    1. γ射线(伽马射线)
    1. gamma ray (gamma ray)
    波长短于0.2埃的电磁波。由放射性同位素如60Co或137Cs产生。是一种高能电磁波,波长很短(0.001-0.0001nm),穿透力强,射程远,一次可照射很多材料,而且剂量比较均匀,危险性大,必须屏蔽(几个cm的铅板或几米厚的混凝土墙)。
    Electromagnetic waves with wavelengths shorter than 0.2. Produced by radioisotopes such as 60Co or 137Cs. It is a high-energy electromagnetic wave with a very short wavelength (0.001-0.0001nm), strong penetration, long range, a large number of materials can be irradiated at a time, and the dose is more uniform, dangerous, must be shielded (several cm of lead plate or several meters thick concrete wall).

    γ射线是原子衰变裂解时放出的射线之一。此种电磁波波长很短,穿透力很强,又携带高能量,容易造成生物体细胞内的DNA断裂进而引起细胞突变、造血功能缺失、癌症等疾病。

    射线防护器材

    Gamma ray is one of the rays emitted during atomic decay. This kind of electromagnetic wave has very short wavelength, strong penetrating power, and carries high energy. It is easy to cause DNA breakage in the cells of organisms and then cause cell mutation, loss of hematopoietic function, cancer and other diseases.
    但是它可以杀死细胞,因此也可以作杀死癌细胞,以作医疗之用。
    But it can kill cells, so it can also kill cancer cells for medical purposes.
    1900年由法国科学家P.V.维拉德(Paul Ulrich Villard)发现,将含镭的氯化钡通过阴极射线,从照片记录上看到辐射穿过0.2毫米的铅箔,拉塞福称这一贯穿力非常强的辐射为γ射线,是继α、β射线后发现的第三种原子核射线。
    In 1900, Paul Ulrich Villard, a French scientist, discovered that barium chloride containing radium was passed through cathode rays, and photographs showed that the radiation passed through 0.2 millimetres of lead foil. Laseford called this very strong penetrating radiation gamma rays, the third kind of nuclear rays discovered after alpha and beta rays.