MeV negative ion generation from ultra-intense laser interaction with a water spray

Journal Article · Mon Aug 01 00:00:00 EDT 2011 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.3622664· OSTI ID:22027695

Ter-Avetisyan, S; Ramakrishna, B; Borghesi, M; Doria, D; Zepf, M; Sarri, G ^[1]; Ehrentraut, L; Steinke, S; Sandner, W; Schnuerer, M ^[2]; Andreev, A ^[2]; Nickles, P V ^[2]; Tikhonchuk, V ^[3]

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1. School of Mathematics and Physics, The Queen's University Belfast, BT7 1NN (United Kingdom)
2. Max Born Institute, Nonlinear Optics and Short Pulse Spectroscopy, Berlin 12489 (Germany)
3. CELIA, Universite Bordeaux 1-CEA - CNRS, 351, Cours de la Liberation, 33405 Talence Cedex (France)

MeV negative oxygen ions are obtained from a water spray target irradiated by high intensity (5 x 10{sup 19} W/cm{sup 2}) 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.

• OSTI ID: 22027695
• Journal Information: Applied Physics Letters, Vol. 99, Issue 5; Other Information: (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
ANIONS
ATOMS
CATIONS
DISSOCIATION
ELECTRON CAPTURE
INTERACTIONS
LASER RADIATION
LASERS
MEV RANGE
OXYGEN
OXYGEN IONS
PHOTOIONIZATION
PHOTOLYSIS
PULSES
SPRAYS
VELOCITY
WATER