Mechanism of long-range penetration of low-energy ions in botanic samples

作者：Liu F; Wang YG^*; Xue JM; Wang SX; Du GH; Yan S; Zhao WJ

来源：Chinese Physics Letters, 2002, 19(3): 378-380.

We present experimental evidence to reveal the mechanism of long-range penetration of low-energy ions in botanic samples. In the 100 keV Ar+ ion transmission measurement, the result confirmed that low-energy ions could penetrate at least 60 mum thick kidney bean slices with the probability of about 1.0 x 10(-5). The energy spectrum of 1 MeV He+ ions penetrating botanic samples has shown that there is a peak of the count of ions with little energy loss. The probability of the low-energy ions penetrating the botanic sample is almost the same as that of the high-energy ions penetrating the same samples with little energy loss. The results indicate that there are some micro-regions with mass thickness less than the projectile range of low-energy ions in the botanic samples and they result in the long-range penetration of low-energy ions in botanic samples.

• 出版日期2002-3
• 单位北京大学