Integrated anti-electronics for positron annihilation spectroscopy
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arXiv
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| Format: | Preprint |
| Published: |
2024
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| _version_ | 1866910316473876480 |
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| author | Guatieri, Francesco |
| author_facet | Guatieri, Francesco |
| contents | Imaging the features of a sample using Positron Annihilation Spectroscopy (PAS) is currently achieved by rastering, i.e. by scanning the sample surface with a sharply focused positron beam. However, a beam of arbitrary shape (sculpted beam) would allow the application of more versatile single-pixel imaging (SPI) techniques. I introduce the design of a microelectronic device employing a 2D array of Zener diodes as an active positron moderator, capable of sculpting positron beams with 6um resolution. The re-emitted positrons are accelerated towards the sample through a miniaturised electrostatic lens system and reaching 100nm resolution. The fast switch-on (90ps) and switch-off (250ps) time of the device would enable state-of-the-art positron annihilation lifetime spectroscopy (PALS) and PAS imaging with high spatial and temporal resolution. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2402_01307 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Integrated anti-electronics for positron annihilation spectroscopy Guatieri, Francesco Instrumentation and Detectors Imaging the features of a sample using Positron Annihilation Spectroscopy (PAS) is currently achieved by rastering, i.e. by scanning the sample surface with a sharply focused positron beam. However, a beam of arbitrary shape (sculpted beam) would allow the application of more versatile single-pixel imaging (SPI) techniques. I introduce the design of a microelectronic device employing a 2D array of Zener diodes as an active positron moderator, capable of sculpting positron beams with 6um resolution. The re-emitted positrons are accelerated towards the sample through a miniaturised electrostatic lens system and reaching 100nm resolution. The fast switch-on (90ps) and switch-off (250ps) time of the device would enable state-of-the-art positron annihilation lifetime spectroscopy (PALS) and PAS imaging with high spatial and temporal resolution. |
| title | Integrated anti-electronics for positron annihilation spectroscopy |
| topic | Instrumentation and Detectors |
| url | https://arxiv.org/abs/2402.01307 |