Efficiency of Dopant-Induced Ignition of Helium Nanoplasmas
Helium nanodroplets irradiated by intense near-infrared laser pulses ignite and form highly ionized nanoplasmas even at laser intensities where helium is not directly ionized by the optical field, provided the droplets contain a few dopant atoms. We present a combined theoretical and experimental st...
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| creator | Heidenreich, A Gruener, B Rometsch, M Krishnan, S R Stienkemeier, F Mudrich, M |
| description | Helium nanodroplets irradiated by intense near-infrared laser pulses ignite and form highly ionized nanoplasmas even at laser intensities where helium is not directly ionized by the optical field, provided the droplets contain a few dopant atoms. We present a combined theoretical and experimental study of the He nanoplasma ignition dynamics for various dopant species. We find that the efficiency of dopants to ignite a nanoplasma in helium droplets strongly varies and mostly depends on (i) the pick-up process, (ii) the number of free electrons each dopant donates upon ionization, and remarkably, (iii) by the hitherto unexplored effect of the dopant location in or on the droplet. |
| doi_str_mv | 10.48550/arxiv.1603.08659 |
| format | Article |
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| language | eng |
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| source | Freely Accessible Journals; arXiv.org |
| subjects | Dopants Droplets Free electrons Helium Ignition Infrared lasers Ionization Physics - Atomic and Molecular Clusters |
| title | Efficiency of Dopant-Induced Ignition of Helium Nanoplasmas |
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