Momentum spectroscopy of fragment ions of a multiply charged N2O molecule under impact of 10-keV electrons

Direct Coulomb explosion of N2O2+ induced by monochromatic extreme ultraviolet photons at 38.5 eV*

“…Condition KER/eV Electrons 1300 eV 7.2 ± 0.7 [10] 50 eV 6.3 ± 1.0 [11] 10 keV 4.0 ± 0.5, 5.3 ± 0.6 [7] 5 keV 6.6 ± 0.2 [12] HCIs 5.9 MeV/u Xe 43+ 7.0 [13] 5.7 keV/u Xe 15+ 6.8, 9.0 [8] Intense laser 795 nm, 100 fs, ∼5 PW/cm 2 6.5 ± 2.0 [14] 800 nm, 60 fs, ∼0.16 PW/cm 2 6.8 ± 2.0 [15] 750 nm, 4 fs, ∼0.3 PW/cm 2 6.8 [5] Photons 40.8 eV 6.4 ± 0.3 [17] 12.4-51.7 eV 6.3 ± 0.3 [6] 48.4 eV 7.2 ± 0.4 [10] ∼ 38.5 eV 6.4, 8.8 a a Present work. From the fitting results, we conclude that the major peak centered at 6.4 eV can be attributed to two processes: (i) the dominant photodissociation peak centered at 6.3 eV (black solid curve) which represents a direct decay from the 1 1 ∆ state to the second dissociation limit of N + ( 1 D) + NO + ( 1 Σ + ), (ii) the second peak at 6.8 eV (green solid curve) is assigned to the direct dissociation of the 1 1 Σ + state to the same dissociation limit (L2).…”

“…[11] For higher electron impact energies of 10 keV, two peaks in the KER distribution were identified. [7] These peaks are located at 4.0 ± 0.5 eV and 5.3 ± 0.6 eV with relative intensities of 58 : 42, respectively. Later, similar structures were also observed for 5 keV electron impact where the major peak was found at 6.6 ± 0.2 eV.…”

“…[4,5] A non-negligible de-nitrogenation channel originating from the Coulomb explosions of N 2 O 2+ has been reported recently. [5,6] After removal of two electrons from N 2 O induced by the solar radiation or charged particles from the space, the molecular dication N 2 O 2+ subsequently dissociates through four different fragmentation channels as follows: [6][7][8][9] N 2 O 2+ → N + + NO + (E L = 28.8 eV),…”

“…The KER of the de-nitrogenation channel of N 2 O 2+ induced in collisions with electrons, [7,[10][11][12] highly charged ions (HCIs), [8,13] and intense infrared laser fields [5,[14][15][16] have been extensively studied. Generally, the dissociation energy strongly depends on the molecular potential curves populated.…”

Geometric structure of N2O q+ (q = 5, 6) studied by Ne8+ ion-induced Coulomb explosion imaging*

“…The CE dynamics of N 2 O q+ (q ≥ 2) induced by electron, ion, and photon collisions have been extensively studied experimentally and theoretically. [8][9][10][26][27][28][29][30][31][32][33][34][35][36][37][38][39][40][41][42][43] Most of the previous works concentrated on the two-body fragmentation of N 2 O q+ (q = 2, 3). Relatively few works [8][9][10][29][30][31] presented the complete three-body CE process of highly charged N 2 O q+ (q ≥ 3).…”