Dissociation of C–H molecular bond of methane by pulse shaped ultra-intense laser field

Selective photo-dissociative ionization of methane molecule with TDDFT study

“…The occupation of lowest unoccupied molecular orbital (LUMO), 3a 1 and three doubly degenerate LUMOs of methane, 2t 2 are calculated, 4%, 38%, 30% and 6%, respectively. For 5×10 14 Wcm -2 and 10 15 Wcm -2 laser intensities, total dissociation yields of methane molecule are obtained about 10% and 15% [19]. The experimental fragmental ion yields of CH 2 + , CH + , C + and C 2+ for 10 14 Wcm -2 -10 15 Wcm -2 intensity range and pulse duration range from 35fs to 48fs are much lower than the induced optimization results [30,31].…”

“…Due to the multi-orbital effects, molecular dynamics analysis and controlling of molecular dynamics is considerably complicated. In this paper, following our recent theoretical and experimental studies on the dissociation of methane [18][19][20]…”

Optimal control of dissociation of nitrogen molecule with intense ultra-short laser pulse shaping

“…Recently, we have reported our theoretical and experimental studies on the dissociation process of molecules using infrared laser frequencies with consideration of nuclear degrees of freedom [18][19][20][21]. In this work, for addressing the energetic electronic motion the frequencies should be increased up to the XUV regime.…”

The effect of ultraviolet lasers on conversion of methane into higher hydrocarbons

“…In this paper, following our recent study on dissociation of methane (Zare et al, 2013), we investigated the dissociation of CH 4 molecule and conversion into higher hydrocarbons using two wavelengths of 248 nm KrF laser and 355 nm of third harmonic of Nd:YAG laser both experimentally and theoretically. In the experimental part of this paper, the conversion of methane into other hydrocarbons and main yields are measured and analyzed in detail.…”

“…The photo dissociation of methane has been studied extensively based on the theoretical approaches (Wang et al, 2003;Zare et al, 2013), however the important role of nine internal degrees of methane, does not allow explaining the process explicitly (Abu-samha & Madsen, 2009;Son & Chu, 2009). The experimental results can help to have better insight into the theoretical studies.…”