Anand, M. ; Kahaly, S. ; Ravindra Kumar, G. ; Krishnamurthy, M. ; Sandhu, A. S. ; Gibbon, P. (2006) Enhanced hard X-ray emission from microdroplet preplasma Applied Physics Letters, 88 (18). Article ID 181111. ISSN 0003-6951
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Official URL: http://aip.scitation.org/doi/abs/10.1063/1.2200761...
Related URL: http://dx.doi.org/10.1063/1.2200761
Abstract
We perform a comparative study of hard X-ray emission from femtosecond laser plasmas in 15 μm methanol microdroplets and Perspex target. The hard X-ray yield from droplet plasmas is ≃ 68 times more than that obtained from solid plasmas at 2 × 1015 W cm−2. A 10 ns prepulse at about 5% of the main pulse appears to be essential for hard X-ray generation from droplets. Hot electron temperature of 36 keV is measured from the droplets at 8 × 1014 W cm−2, whereas a three times higher intensity is needed to obtain similar hot electron temperatures from Perspex plasmas. Particle-in-cell simulations with very long scale-length density profiles support experimental observations.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to American Institute of Physics. |
| Keywords: | Fluid Drops; Hard X-rays; X-ray Generation; Extreme Ultraviolet Radiation; Particle-in-cell Method |
| ID Code: | 102616 |
| Deposited On: | 02 Feb 2018 04:27 |
| Last Modified: | 02 Feb 2018 04:27 |
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