Insight into What Is inside Swift Heavy Ion Latent Tracks in PET Film
We present here a novel experimental study of changes after contact electrification in the optical transmission spectra of samples of both pristine and irradiated PET film treated with Kr<sup>+15</sup> ions of energy of 1.75 MeV and a fluence of 3 × 10<sup>10</sup> cm<sup&...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2023-10-01
|
| Series: | Polymers |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2073-4360/15/20/4050 |
| _version_ | 1797572445099524096 |
|---|---|
| author | Adil Z. Tuleushev Fiona E. Harrison Artem L. Kozlovskiy Maxim V. Zdorovets |
| author_facet | Adil Z. Tuleushev Fiona E. Harrison Artem L. Kozlovskiy Maxim V. Zdorovets |
| author_sort | Adil Z. Tuleushev |
| collection | DOAJ |
| description | We present here a novel experimental study of changes after contact electrification in the optical transmission spectra of samples of both pristine and irradiated PET film treated with Kr<sup>+15</sup> ions of energy of 1.75 MeV and a fluence of 3 × 10<sup>10</sup> cm<sup>2</sup>. We used a non-standard electrification scheme for injecting electrons into the film by applying negative electrodes to both its surfaces and using the positively charged inner regions of the film itself as the positive electrode. Electrification led to a decrease in the intensity of the internal electric fields for both samples and a hypsochromic (blue) shift in their spectra. For the irradiated PET sample, electrification resulted in a Gaussian modulation of its optical properties in the photon energy range 2.3–3.6 eV. We associate this Gaussian modulation with the partial decay of non-covalent extended conjugated systems that were formed under the influence of the residual radial electric field of the SHI latent tracks. Our studies lead us to suggest the latent track in the PET film can be considered as a variband material in the radial direction. Consideration of our results along with other published experimental results leads us to conclude that these can all be consistently understood by taking into account both the swift and slow electrons produced by SHI irradiation, and that it appears that the core of a latent track is negatively charged, and the periphery is positively charged. |
| first_indexed | 2024-03-10T20:56:22Z |
| format | Article |
| id | doaj.art-21250171af1147f58350c5ba5f503065 |
| institution | Directory Open Access Journal |
| issn | 2073-4360 |
| language | English |
| last_indexed | 2024-03-10T20:56:22Z |
| publishDate | 2023-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Polymers |
| spelling | doaj.art-21250171af1147f58350c5ba5f5030652023-11-19T17:50:26ZengMDPI AGPolymers2073-43602023-10-011520405010.3390/polym15204050Insight into What Is inside Swift Heavy Ion Latent Tracks in PET FilmAdil Z. Tuleushev0Fiona E. Harrison1Artem L. Kozlovskiy2Maxim V. Zdorovets3Engineering Profile Laboratory, L.N. Gumilyov Eurasian National University, Astana 010008, KazakhstanEngineering Profile Laboratory, L.N. Gumilyov Eurasian National University, Astana 010008, KazakhstanEngineering Profile Laboratory, L.N. Gumilyov Eurasian National University, Astana 010008, KazakhstanEngineering Profile Laboratory, L.N. Gumilyov Eurasian National University, Astana 010008, KazakhstanWe present here a novel experimental study of changes after contact electrification in the optical transmission spectra of samples of both pristine and irradiated PET film treated with Kr<sup>+15</sup> ions of energy of 1.75 MeV and a fluence of 3 × 10<sup>10</sup> cm<sup>2</sup>. We used a non-standard electrification scheme for injecting electrons into the film by applying negative electrodes to both its surfaces and using the positively charged inner regions of the film itself as the positive electrode. Electrification led to a decrease in the intensity of the internal electric fields for both samples and a hypsochromic (blue) shift in their spectra. For the irradiated PET sample, electrification resulted in a Gaussian modulation of its optical properties in the photon energy range 2.3–3.6 eV. We associate this Gaussian modulation with the partial decay of non-covalent extended conjugated systems that were formed under the influence of the residual radial electric field of the SHI latent tracks. Our studies lead us to suggest the latent track in the PET film can be considered as a variband material in the radial direction. Consideration of our results along with other published experimental results leads us to conclude that these can all be consistently understood by taking into account both the swift and slow electrons produced by SHI irradiation, and that it appears that the core of a latent track is negatively charged, and the periphery is positively charged.https://www.mdpi.com/2073-4360/15/20/4050PET filmswift heavy ionmolecular orderingelectrification of PET samplehypsochromic shift of absorption edge |
| spellingShingle | Adil Z. Tuleushev Fiona E. Harrison Artem L. Kozlovskiy Maxim V. Zdorovets Insight into What Is inside Swift Heavy Ion Latent Tracks in PET Film Polymers PET film swift heavy ion molecular ordering electrification of PET sample hypsochromic shift of absorption edge |
| title | Insight into What Is inside Swift Heavy Ion Latent Tracks in PET Film |
| title_full | Insight into What Is inside Swift Heavy Ion Latent Tracks in PET Film |
| title_fullStr | Insight into What Is inside Swift Heavy Ion Latent Tracks in PET Film |
| title_full_unstemmed | Insight into What Is inside Swift Heavy Ion Latent Tracks in PET Film |
| title_short | Insight into What Is inside Swift Heavy Ion Latent Tracks in PET Film |
| title_sort | insight into what is inside swift heavy ion latent tracks in pet film |
| topic | PET film swift heavy ion molecular ordering electrification of PET sample hypsochromic shift of absorption edge |
| url | https://www.mdpi.com/2073-4360/15/20/4050 |
| work_keys_str_mv | AT adilztuleushev insightintowhatisinsideswiftheavyionlatenttracksinpetfilm AT fionaeharrison insightintowhatisinsideswiftheavyionlatenttracksinpetfilm AT artemlkozlovskiy insightintowhatisinsideswiftheavyionlatenttracksinpetfilm AT maximvzdorovets insightintowhatisinsideswiftheavyionlatenttracksinpetfilm |