Fast ion emission is an important topic in laser-plasma interactions. Fast ions are usually caused by fast-electron-generated ambipolar fields. In this letter, we present the first systematic investigation of fast ion...Fast ion emission is an important topic in laser-plasma interactions. Fast ions are usually caused by fast-electron-generated ambipolar fields. In this letter, we present the first systematic investigation of fast ion emission as a function of laser intensity for targets of various Z. The experiments were performed at 1.06 μm wavelength with one beam of the six-beam laser facility, operating at a few joules and 100展开更多
Many physical processes of laser-plasma in teraction are relevant to the size of the corona plasma and its density profile. Therefore the appearance of laser prepulse will directly affect the mainpulse laser-target co...Many physical processes of laser-plasma in teraction are relevant to the size of the corona plasma and its density profile. Therefore the appearance of laser prepulse will directly affect the mainpulse laser-target coupling. But so far no method for determining the properties of a precursor plasma produced by the prepulse has been found out yet. We here for the first time put forward the opinion that the temperature展开更多
In order to distinguish the different mechanisms of second harmonic (SH) emission from laser-plasma interactions, especially to investigate the emission regularity of SH spectrum with a complex structure, the spatiall...In order to distinguish the different mechanisms of second harmonic (SH) emission from laser-plasma interactions, especially to investigate the emission regularity of SH spectrum with a complex structure, the spatially resolved backscattered and sidescattered SH spectra and SH space emission characteristics have been observed systematically over a wide range of laser inten-展开更多
文摘Fast ion emission is an important topic in laser-plasma interactions. Fast ions are usually caused by fast-electron-generated ambipolar fields. In this letter, we present the first systematic investigation of fast ion emission as a function of laser intensity for targets of various Z. The experiments were performed at 1.06 μm wavelength with one beam of the six-beam laser facility, operating at a few joules and 100
文摘Many physical processes of laser-plasma in teraction are relevant to the size of the corona plasma and its density profile. Therefore the appearance of laser prepulse will directly affect the mainpulse laser-target coupling. But so far no method for determining the properties of a precursor plasma produced by the prepulse has been found out yet. We here for the first time put forward the opinion that the temperature
文摘In order to distinguish the different mechanisms of second harmonic (SH) emission from laser-plasma interactions, especially to investigate the emission regularity of SH spectrum with a complex structure, the spatially resolved backscattered and sidescattered SH spectra and SH space emission characteristics have been observed systematically over a wide range of laser inten-
