MeV Cluster Ion Beam–Material Interaction
This paper treats the characteristic topics of MeV/atom cluster ion beams produced using tandem accelerators both in the production stage and in the penetration stage from the viewpoint of fundamental processes. The former is related to atomic collisions in that production and decay of a cluster ion...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-01-01
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| Series: | Quantum Beam Science |
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| Online Access: | https://www.mdpi.com/2412-382X/6/1/6 |
| _version_ | 1797442937103056896 |
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| author | Toshiaki Kaneko |
| author_facet | Toshiaki Kaneko |
| author_sort | Toshiaki Kaneko |
| collection | DOAJ |
| description | This paper treats the characteristic topics of MeV/atom cluster ion beams produced using tandem accelerators both in the production stage and in the penetration stage from the viewpoint of fundamental processes. The former is related to atomic collisions in that production and decay of a cluster ion <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msub><mi>C</mi><mi>n</mi></msub><msup><mrow></mrow><mo>+</mo></msup><mo> </mo><mo stretchy="false">(</mo><mi>n</mi><mo>=</mo><mn>1</mn><mo>−</mo><mn>4</mn><mo stretchy="false">)</mo></mrow></semantics></math></inline-formula> colliding with a charge-changing rare gas underlined through the electron-loss process. Regarding the latter, relatively small carbon clusters <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msub><mi>C</mi><mi>n</mi></msub><msup><mrow></mrow><mo>+</mo></msup><mo> </mo><mo stretchy="false">(</mo><mi>n</mi><mo>=</mo><mn>2</mn><mo>−</mo><mn>10</mn><mo stretchy="false">)</mo></mrow></semantics></math></inline-formula> are treated. The reduction effect of the average charge of cluster ions in a material is first presented. Next, the electronic stopping power and the energy loss, the polarization force, and the coulomb explosion under cluster-ion impact are described in the dielectric function form. Alignment and structure effects are stressed. As a large and highly symmetric cluster, the electronic stopping power and the average charge are shown for a C<sub>60</sub> cluster ion moving inside a solid. Throughout the paper, it is emphasized that the vicinage effect originating from correlation on spatial structure and orientation of constituent ions plays the key role. Moreover, results obtained in cluster production and penetration phenomena are mostly different from multiplication of those under single-ion impact. |
| first_indexed | 2024-03-09T12:48:52Z |
| format | Article |
| id | doaj.art-439383e196c44ed2a460a68d154b90c1 |
| institution | Directory Open Access Journal |
| issn | 2412-382X |
| language | English |
| last_indexed | 2024-03-09T12:48:52Z |
| publishDate | 2022-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Quantum Beam Science |
| spelling | doaj.art-439383e196c44ed2a460a68d154b90c12023-11-30T22:09:00ZengMDPI AGQuantum Beam Science2412-382X2022-01-0161610.3390/qubs6010006MeV Cluster Ion Beam–Material InteractionToshiaki Kaneko0Graduate School of Science, Okayama University of Science, Okayama 700-0005, JapanThis paper treats the characteristic topics of MeV/atom cluster ion beams produced using tandem accelerators both in the production stage and in the penetration stage from the viewpoint of fundamental processes. The former is related to atomic collisions in that production and decay of a cluster ion <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msub><mi>C</mi><mi>n</mi></msub><msup><mrow></mrow><mo>+</mo></msup><mo> </mo><mo stretchy="false">(</mo><mi>n</mi><mo>=</mo><mn>1</mn><mo>−</mo><mn>4</mn><mo stretchy="false">)</mo></mrow></semantics></math></inline-formula> colliding with a charge-changing rare gas underlined through the electron-loss process. Regarding the latter, relatively small carbon clusters <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msub><mi>C</mi><mi>n</mi></msub><msup><mrow></mrow><mo>+</mo></msup><mo> </mo><mo stretchy="false">(</mo><mi>n</mi><mo>=</mo><mn>2</mn><mo>−</mo><mn>10</mn><mo stretchy="false">)</mo></mrow></semantics></math></inline-formula> are treated. The reduction effect of the average charge of cluster ions in a material is first presented. Next, the electronic stopping power and the energy loss, the polarization force, and the coulomb explosion under cluster-ion impact are described in the dielectric function form. Alignment and structure effects are stressed. As a large and highly symmetric cluster, the electronic stopping power and the average charge are shown for a C<sub>60</sub> cluster ion moving inside a solid. Throughout the paper, it is emphasized that the vicinage effect originating from correlation on spatial structure and orientation of constituent ions plays the key role. Moreover, results obtained in cluster production and penetration phenomena are mostly different from multiplication of those under single-ion impact.https://www.mdpi.com/2412-382X/6/1/6carbon clusterelectron lossenergy lossstopping powerLETcoulomb explosion |
| spellingShingle | Toshiaki Kaneko MeV Cluster Ion Beam–Material Interaction Quantum Beam Science carbon cluster electron loss energy loss stopping power LET coulomb explosion |
| title | MeV Cluster Ion Beam–Material Interaction |
| title_full | MeV Cluster Ion Beam–Material Interaction |
| title_fullStr | MeV Cluster Ion Beam–Material Interaction |
| title_full_unstemmed | MeV Cluster Ion Beam–Material Interaction |
| title_short | MeV Cluster Ion Beam–Material Interaction |
| title_sort | mev cluster ion beam material interaction |
| topic | carbon cluster electron loss energy loss stopping power LET coulomb explosion |
| url | https://www.mdpi.com/2412-382X/6/1/6 |
| work_keys_str_mv | AT toshiakikaneko mevclusterionbeammaterialinteraction |