Absolute Measurement of Laser Ionization Yield in Atmospheric Pressure Range Gases over 14 Decades
Strong-field ionization is central to intense laser-matter interactions. However, standard ionization measurements have been limited to extremely low density gas samples, ignoring potential high density effects. Here, we measure strong-field ionization in atmospheric pressure range air, N_{2}, and A...
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| Veröffentlicht in: | Physical review letters 2020-01, Vol.124 (1), p.013201-013201, Article 013201 |
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| container_end_page | 013201 |
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| container_title | Physical review letters |
| container_volume | 124 |
| creator | Woodbury, D Schwartz, R M Rockafellow, E Wahlstrand, J K Milchberg, H M |
| description | Strong-field ionization is central to intense laser-matter interactions. However, standard ionization measurements have been limited to extremely low density gas samples, ignoring potential high density effects. Here, we measure strong-field ionization in atmospheric pressure range air, N_{2}, and Ar over 14 decades of absolute yield, using mid-IR picosecond avalanche multiplication of single electrons. Our results are consistent with theoretical rates for isolated atoms and molecules and quantify the ubiquitous presence of ultralow concentration gas contaminants that can significantly affect laser-gas interactions. |
| doi_str_mv | 10.1103/PhysRevLett.124.013201 |
| format | Article |
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However, standard ionization measurements have been limited to extremely low density gas samples, ignoring potential high density effects. Here, we measure strong-field ionization in atmospheric pressure range air, N_{2}, and Ar over 14 decades of absolute yield, using mid-IR picosecond avalanche multiplication of single electrons. 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| source | American Physical Society Journals; EZB-FREE-00999 freely available EZB journals |
| subjects | 70 PLASMA PHYSICS AND FUSION TECHNOLOGY Atmospheric pressure Contaminants Electron avalanche Field ionization Gas sampling Gases Lasers Multiplication Physics Rarefied gases Single electrons |
| title | Absolute Measurement of Laser Ionization Yield in Atmospheric Pressure Range Gases over 14 Decades |
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