، صفحه 0-0 (1)

عنوان دوره: اولین دوره بین المللی و بیست و هشتمین دوره ملی (1400)

In this paper, the effect of laser pulse intensity on the energy spectrum of electrons in the interaction of a laser with Hydrogen atoms is investigated using the PIC simulation code. The simulation results are used to compare electron energy distribution functions in the field-ionized plasma (plasma made due to field ionization) and in the pre-plasma. For long rise-time pulse (here 60 fs), although the maximum energy of the electrons is the same in both cases, the energy bandwidth (average electron temperature) of the electron distribution function in the field-ionized plasma is larger than the pre-plasma case. In addition to the increase in laser pulse intensity, the maximum energy of the electrons also increases in two states. This may be due to the delay in meeting Mendonca's condition for the chaos to occur.

Laser pulse intensity؛ PIC simulation؛ Energy spectrum