Neutron Generated Single-Event Upsets in the Atmosphere
Neutron Generated Single-Event Upsets in the Atmosphere
复制标题
中子在大气中产生的单粒子扰动
DOI：
10.1109/tns.1984.4333479
复制
发表时间：
1984
影响因子：
1.8
通讯作者：
J. R. Letaw
中科院分区：
文献类型：
--
作者：
R. Silberberg;C. Tsao;J. R. Letaw
重宇宙射线核在50 g/cm 2大气气体的屏蔽下大部分衰减。然而，屏蔽层起着中子发生器的作用，从原子核中蒸发或撞击出来。这些中子产生高度电离的核反冲，在微电子元件中产生单粒子翻转。为了衰减超过300 g/cm 2的二次中子通量，需要大气材料。屏蔽中来自核相互作用的大量慢质子也会在敏感元件中产生扰动，这些敏感元件具有低临界电荷。在65,000英尺以下的高度，大多数单粒子扰动都是由这些次级粒子引起的。由宇宙线、太阳耀斑粒子和俘获辐射粒子相互作用产生的中子和慢次级质子的翻转率是临界电荷的函数。
Heavy cosmic ray nuclei are mostly attenuated with a shielding of 50 g/cm2 atmospheric gas. However, the shielding acts as a generator of neutrons, evaporated or knocked out of nuclei. These neutrons generate highly ionizing nuclear recoils that produce single-event upsets in microelectronic components. To attenuate the secondary neutron flux over 300 g/cm2 of atmospheric material is required. The numerous slow protons from nuclear interactions in shielding will also genetrate upsets in sensitive components, which have a low critical charge. At altitudes below 65,000 feet, most single-event upsets are due to these secondary particles. The upset rates due to neutrons and slow secondary protons from cosmic ray, solar flare particle, and trapped radiation particle interactions are presented as a function of the critical charge.