High-resolution energy-selected study of the reaction NH3+→NH2++H: Accurate thermochemistry for the NH2/NH2+ and NH3/NH3+ systems

Abstract

Abstract:Employing the newly developed high-resolution pulsed field ionization-photoelectron (PFI-PE)-

Optical emission in the dissociation of ammonia by low energy He+ ions

“…The maximum at lower energies in Figure 6 can be due to the formation of unstable excited states of the target, which was suggested for He + + NH 3 below E CM = 100 eV [12]. In the same spirit, other studies [17] point out that after the VUV excitation of ammonia above 15.6 eV, there is a possibility of conversion from long-lived NH * 3 into NH * 2 with even longer lifetime. The altering of the intermediate species could have therefore contributed to the appearance of the maximum in Figure 6.…”

“…[14,15]). More recent studies [16,17] used synchrotron radiation or other modern VUV sources. Spectroscopic control of dissociation by pumping vibrational modes with microwave photons was demonstrated in references [18][19][20].…”

Ab initio potential energy surface, electric-dipole moment, polarizability tensor, and theoretical rovibrational spectra in the electronic ground state of

“…m 2 þ m 3 [1][2][3]. At low resolution, the 14 NH þ 3 ion has been studied by photoelectron and photoionization spectroscopy [4][5][6][7][8][9][10][11][12][13][14][15]. Further, the infrared spectrum of NH þ 3 , trapped in a solid neon matrix, has been recorded [16].…”

Dissociative recombination study of at CRYRING: absolute cross-section, chemical branching ratios and three-body fragmentation dynamics

“…The electronic configuration of the ground state of NH 2 , X 2 B 1 , is (1a 1 ) 2 (2a 1 ) 2 (1b 2 ) 2 (3a 1 ) 2 1b 1 . The removal of one 3a 1 electron (11.16 eV) [16] results in the formation of the triplet ground state of NH þ 2 , X 3 B 1 . The valence orbital structure of the ground state of PH 2 , X 2 B 1 , is described as .…”