The experiment of "measurement of gamma-ray emission of boron-containing polyethylene ball under d-t neutron irradiation", which used polyethylene ball and boron-containing polyethylene ball to leak gamma-ray emission under d-t neutron irradiation, showed that the slowing down of hydrogen in polyethylene ball played a major role. After the slowing down of neutron, it was mainly the reaction of low-energy neutron to hydrogen. The greater the thickness, the stronger the hydrogen slowing down and absorption, which is reflected in the increase of the amplitude of the hydrogen reaction peak.
《D-T中子照射下含硼 聚乙烯球泄露γ能谱测量》实验运用聚乙烯球和含硼聚乙烯球在D-T中子照射下泄露γ能的实验说明：聚乙烯球中氢的慢化起主要作用，中子被慢化后，主要是低能中子对氢的反应。厚度越大，氢的慢化、吸收越强，表现在氢的反应峰值的幅度增大。
