Precise and accurate measurements of strong-field photoionisation and a transferrable laser intensity calibration standard
| Autor: | Wallace, W. C., Ghafur, O., Khurmi, C., U., Satya Sainadh, Calvert, J. E., Laban, D. E., Pullen, M. G., Bartschat, K., Grum-Grzhimailo, A. N., Wells, D., Quiney, H. M., Tong, X. M., Litvinyuk, I. V., Sang, R. T., Kielpinski, D. |
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| Rok vydání: | 2016 |
| Předmět: | |
| Zdroj: | Phys. Rev. Lett. 117, 053001 (2016) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1103/PhysRevLett.117.053001 |
| Popis: | Ionization of atoms and molecules in strong laser fields is a fundamental process in many fields of research, especially in the emerging field of attosecond science. So far, demonstrably accurate data have only been acquired for atomic hydrogen (H), a species that is accessible to few investigators. Here we present measurements of the ionization yield for argon, krypton, and xenon with percentlevel accuracy, calibrated using H, in a laser regime widely used in attosecond science. We derive a transferrable calibration standard for laser peak intensity, accurate to 1.3%, that is based on a simple reference curve. In addition, our measurements provide a much-needed benchmark for testing models of ionisation in noble-gas atoms, such as the widely employed single-active electron approximation. Comment: Article: 5 pages, 2 figures, submitted to PRL (manuscript number LZ14457). Supplementary information: 7 pages, 6 figures, appended to end of main Article |
| Databáze: | arXiv |
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