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- W2022203451 abstract "Abstract Extreme ultraviolet (EUV) spectroscopy was recorded on microwave discharges of helium with 2% hydrogen. Novel emission lines were observed with energies of q ×13.6 eV where q =1,2,3,4,6,7,8,9,11 or these discrete energies less 21.2 eV corresponding to inelastic scattering of these photons by helium atoms due to excitation of He (1s 2 ) to He (1s 1 2p 1 ). These lines matched H(1/ p ), fractional Rydberg states of atomic hydrogen, formed by a resonant nonradiative energy transfer to He + . Corresponding emission due to the reaction 2H(1/2)→H 2 (1/2) with vibronic coupling at E D + vib =p 2 E D H 2 ±(υ ∗ /3)E vib H 2 (υ=0→υ=1) , υ ∗ =1,2,3,… was observed at the longer wavelengths for υ ∗ =2 to υ ∗ =32 and at the shorter wavelengths for υ ∗ =1 to υ ∗ =16 where E D H 2 and E vib H 2 (υ=0→υ=1) are the experimental bond and vibrational energies of H 2 , respectively. Similar emission due to Ne + with hydrogen was also observed, and the exothermic reaction was confirmed by the observation of 306±5 W of excess power generated in 45 cm 3 by a compound-hollow-cathode-glow discharge of a neon–hydrogen (99%/1%) mixture corresponding to a power density of 6.8 MW/m 3 and an energy balance of about −5×10 5 kJ/(mol H 2 ) compared to the enthalpy of combustion of hydrogen of −241.8 kJ/(mol H 2 )." @default.
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- W2022203451 date "2003-05-01" @default.
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- W2022203451 title "Spectral emission of fractional-principal-quantum-energy-level atomic and molecular hydrogen" @default.
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- W2022203451 doi "https://doi.org/10.1016/s0924-2031(03)00013-4" @default.
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