期刊
PHYSICAL REVIEW LETTERS
卷 110, 期 12, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.110.125001
关键词
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资金
- Science and Technology Facilities Council
- Engineering and Physical Science Research Council of the United Kingdom [EP/E048668/1]
- NNSA of the U.S. DOE [DE-AC5206NA25396]
- RFBR
- Royal Society [12-02-92617-KOa, E120059]
- RF [MK-4725.2012.8]
- EPSRC [EP/E048668/1, EP/I500987/1, EP/J003832/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/I500987/1, EP/J003832/1, EP/E048668/1] Funding Source: researchfish
In high-spectral resolution experiments with the petawatt Vulcan laser, strong x-ray radiation of KK hollow atoms (atoms without n = 1 electrons) from thin Al foils was observed at pulse intensities of 3 x 10(20) W/cm(2). The observations of spectra from these exotic states of matter are supported by detailed kinetics calculations, and are consistent with a picture in which an intense polychromatic x-ray field, formed from Thomson scattering and bremsstrahlung in the electrostatic fields at the target surface, drives the KK hollow atom production. We estimate that this x-ray field has an intensity of >5 x 10(18) W/cm(2) and is in the 3 keV range. DOI: 10.1103/PhysRevLett.110.125001
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