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1 Aug 2011

Volume 99, Issue 5, Articles (05xxxx)

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Appl. Phys. Lett. 99, 051112 (2011); http://dx.doi.org/10.1063/1.3617421 (3 pages)

Wei Li, Jun Chen, Gerard Nouet, Liang-yao Chen, and Xunya Jiang
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MeV negative ion generation from ultra-intense laser interaction with a water spray

S. Ter-Avetisyan, B. Ramakrishna, M. Borghesi, D. Doria, M. Zepf, G. Sarri, L. Ehrentraut, A. Andreev, P. V. Nickles, S. Steinke, W. Sandner, M. Schnürer, and V. Tikhonchuk

Appl. Phys. Lett. 99, 051501 (2011); http://dx.doi.org/10.1063/1.3622664 (3 pages) | Cited 8 times

Online Publication Date: 5 August 2011

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Show Abstract
MeV negative oxygen ions are obtained from a water spray target irradiated by high intensity (5 × 1019 W/cm2) and ultrashort (50 fs) laser pulses. Generation of negative ions is ascribed to electron-capture processes that the laser-accelerated high-energy positive ion experiences when it interacts with atoms in the spray. This mechanism implies the existence of a large number of MeV neutral oxygen atoms, which is consistent with indirect experimental evidence.
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07.77.Ka Charged-particle beam sources and detectors
33.80.Eh Autoionization, photoionization, and photodetachment
33.80.Gj Diffuse spectra; predissociation, photodissociation
34.70.+e Charge transfer
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