排序方式: 共有4条查询结果,搜索用时 15 毫秒
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Paul Michael Tessler Moshe Friedman Moshe Halfon Shlomi Palchan Tala Weissman Leonid Arenshtam Alexander Berkovits Dan Eisen Yosef Eliahu Ilan Feinberg Gitai Kijel Daniel Kreisel Arik Mardor Israel Shimel Guy Shor Asher Silverman Ido 《The European Physical Journal A - Hadrons and Nuclei》2019,55(3):1-10
The European Physical Journal A - An empirical formula is proposed for the two-proton decay half-lives. This study is an extension of the empirical formula reported recently by us for calculating... 相似文献
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A.?Ya.?Faenov A.?I.?Magunov S.?A.?Pikuz S.?V.?Gasilov I.?Yu.?SkobelevEmail author T.?Palchan A.?Zigler Z.?Henis 《Journal of Experimental and Theoretical Physics》2008,107(3):351-355
We have measured the energy of the directed motion of multiply charged ions produced when solid targets are exposed to low-contrast (10?3–10?2) femtosecond laser pulses with intensities 1015–1016 W cm?2. The measurements are based on the recording of spatially resolved X-ray spectra for H-and He-like oxygen ions in the target plane. Analysis of the Heβ and Lyα line profiles has revealed fractions of accelerated ions in plasma with energies from several to several tens of kiloelectronvolts. We show that using a layer of frozen nanometer-size water droplets as the targets leads to an effective absorption of laser pulses and a twofold rise in the energy (to 0.1 MeV) of He-like oxygen ions compared to the use of solid targets. 相似文献
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Zigler A Palchan T Bruner N Schleifer E Eisenmann S Botton M Henis Z Pikuz SA Faenov AY Gordon D Sprangle P 《Physical review letters》2011,106(13):134801
We report on the first generation of 5.5-7.5 MeV protons by a moderate-intensity short-pulse laser (~5×10(17) W/cm(2), 40 fsec) interacting with frozen H(2)O nanometer-size structure droplets (snow nanowires) deposited on a sapphire substrate. In this setup, the laser intensity is locally enhanced by the snow nanowire, leading to high spatial gradients. Accordingly, the nanoplasma is subject to enhanced ponderomotive potential, and confined charge separation is obtained. Electrostatic fields of extremely high intensities are produced over the short scale length, and protons are accelerated to MeV-level energies. 相似文献
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T. Palchan S. Eisenmann A. Zigler D. Kaganovich R.F. Hubbard M. Fraenkel D. Fisher Z. Henis 《Applied physics. B, Lasers and optics》2006,83(2):219-223
Energetic electron bunches were generated by irradiating a solid tungsten wire 13 μm wide with 50 femtosecond pulses at an intensity of ∼3×1018 W/cm2. The electron yield, energy spectrum and angular distribution were measured. These energetic electron bunches are suitable for injection into a laser driven plasma accelerator. An all-optical electron injector based on this approach could simplify timing and alignment in future laser-plasma accelerator experiments. PACS 41.75.Ht; 41.75.Lx; 52.38.Kd; 52.38.Ph 相似文献
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