含硼8%聚乙烯板A和物理研究含硼聚乙烯屏蔽材料產(chǎn)品介紹

Boron containing 8% polyethylene sheet a and physical research Product introduction

含硼8%聚乙烯板是一種相對(duì)廉價(jià)的中子屏蔽材料，對(duì)其中子屏蔽特性已進(jìn)行過一維基準(zhǔn)實(shí)驗(yàn)。與其他中子屏蔽材料一樣，該材料在中子的作用下產(chǎn)生γ射線。相對(duì)于屏蔽中子而言，γ射線是二級(jí)劑量。而在含硼聚乙烯球中，主要是硼起吸收作用。硼對(duì)低能中子的反應(yīng)截面比較大，在還沒有發(fā)生氫的反應(yīng)之前低能中子基本已被硼完全吸收，含硼聚乙烯在質(zhì)量百分比為10﹪、厚度為15cm時(shí)，含硼聚乙烯對(duì)中子的屏蔽效果已達(dá)到要求。在此基礎(chǔ)上再增加含硼量或者厚度，中子的積分泄露量基本不發(fā)生變化。Boron containing polyethylene is a kind of relatively cheap neutron shielding material. One dimensional benchmark experiments have been carried out on its neutron shielding characteristics. Like other neutron shielding materials, this material produces gamma rays under the action of neutrons. Compared with the shielding neutron, the gamma ray is a secondary dose. In the boron containing polyethylene ball, boron is the main absorption. The reaction cross-section of boron to low-energy neutrons is relatively large. Before hydrogen reaction, low-energy neutrons have been completely absorbed by boron. When the mass percentage of boron containing polyethylene is 10% and the thickness is 15 cm, the shielding effect of boron containing polyethylene on neutrons has reached the requirements. On this basis, if the boron content or thickness is increased, the integral leakage of neutron does not change.

含硼8%聚乙烯板主要用于核電站 、核反應(yīng)堆、石油、軍隊(duì)、中科院、研究室、醫(yī)院及核實(shí)驗(yàn)用產(chǎn)品罐、中子束準(zhǔn)直器、中子捕集器以及核反應(yīng)堆的控制棒材料及核屏蔽材料等研究領(lǐng)域。作為屏蔽中子，射線，輻射屏蔽吸收的材料。

Boron containing 8% polyethylene sheet is mainly used in nuclear power plant, nuclear reactor, petroleum, military, Chinese Academy of Sciences, research room, hospital and nuclear experiment product tank, neutron beam collimator, neutron catcher, control rod material and nuclear shielding material of nuclear reactor. As a shielding material for neutrons, rays, radiation, and absorption.