Energy Loss and Straggling of MeV Energy Ions through Biological Samples

MA Lei; CHEN Qi-zhong; XUE Jian-ming; WANG Yu-gang#

doi:10.11804/NuclPhysRev.24.02.133

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Article Navigation > Nuclear Physics Review > 2007 > 24(2): 133-137

MA Lei, CHEN Qi-zhong, XUE Jian-ming, WANG Yu-gang#. Energy Loss and Straggling of MeV Energy Ions through Biological Samples[J]. Nuclear Physics Review, 2007, 24(2): 133-137. doi: 10.11804/NuclPhysRev.24.02.133

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MA Lei, CHEN Qi-zhong, XUE Jian-ming, WANG Yu-gang#. Energy Loss and Straggling of MeV Energy Ions through Biological Samples[J]. Nuclear Physics Review, 2007, 24(2): 133-137. doi: 10.11804/NuclPhysRev.24.02.133

Energy Loss and Straggling of MeV Energy Ions through Biological Samples

doi: 10.11804/NuclPhysRev.24.02.133

Received Date: 1900-01-01
Rev Recd Date: 1900-01-01
Publish Date: 2007-06-20

Abstract

In order to study the energy loss and its straggling of MeV energy ions in biological samples, onion membrane samples with different thickness were irradiated with 1.0, 1.8, 2.8 MeV H+ and 4.5 MeV He+ , respectively. The energy loss and straggling of these ions after penetrating the biological samples were measured with transmission energy spectrum. The experimental results show that the energy losses of MeV energy ions in the biological samples mentioned above are consistent with TRIM simulation but their energy straggling are different from the simulations. Considering the inhomogeneous mass density and structure of biological materials, we modified Bohr’s energy straggling theory, and then the results are in good agreemen with the experimental energy straggling values.
- MeV energy ion,
- energy loss,
- energy straggling,
- biological sample
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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

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Energy Loss and Straggling of MeV Energy Ions through Biological Samples

doi: 10.11804/NuclPhysRev.24.02.133

Received Date: 1900-01-01
Rev Recd Date: 1900-01-01
Publish Date: 2007-06-20

Key words:

Abstract: In order to study the energy loss and its straggling of MeV energy ions in biological samples, onion membrane samples with different thickness were irradiated with 1.0, 1.8, 2.8 MeV H+ and 4.5 MeV He+ , respectively. The energy loss and straggling of these ions after penetrating the biological samples were measured with transmission energy spectrum. The experimental results show that the energy losses of MeV energy ions in the biological samples mentioned above are consistent with TRIM simulation but their energy straggling are different from the simulations. Considering the inhomogeneous mass density and structure of biological materials, we modified Bohr’s energy straggling theory, and then the results are in good agreemen with the experimental energy straggling values.

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