The primary target model of energetic ions penetration in thin botanic samples |
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Authors: | Yugang Wang Guanghua Du Jianming Xue Feng Liu Sixue Wang Sha Yan Weijiang Zhao |
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Institution: | Ion Beam Group, Institute of Heavy Ion Physics, Peking University, Beijing 100871, PR China |
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Abstract: | The ion transmission spectra of very low current MeV H+ ions through two kinds of botanic samples, kidney bean slices and onion endocuticle, were carried out. The experimental spectra confirmed the botanic sample is inhomogeneous in mass density. A target model with local density approximation was suggested to describe the penetration of the energetic ions in such kind of materials. From the fitting of proton transmission spectra of two-energies, this target model was verified primarily. Including the influence of surface roughness and irradiation damage, this target model could be improved to predict the profile of penetration depth and range distribution of the energetic ions in the botanic samples. |
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Keywords: | Energetic ion penetration Transmission spectrum Biological membrane Target model |
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