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High-Resolution 2+1 REMPI Study of the a ''(1)Sigma(+)(g) State in N-2
We reinvestigated the 2 + 1 REMPI Q-branch spectrum of the a ''(1)Sigma(+)(g) + X-1 Sigma(+)(g) system of N-2 at around 202 nm in a Doppler-free configuration with counterpropagating laser beams. Highly accurate absolute ...
4FNF DOUBLY EXCITED AUTOIONIZING SERIES IN BARIUM
In a two-step pulsed-laser atomic-beam experiment we have studied doubly excited 4fnf series of barium with energy of approximately 11 eV above the atomic ground state (6s2) and 6 eV above the first ionization limit (6s). ...
Highly excited states of gerade symmetry in molecular nitrogen
Highly excited states of gerade symmetry in molecular nitrogen have been investigated in a resonance-enhanced XUV+Vis (extreme ultraviolet+visible) transition scheme. Nineteen bands have been observed, of which only four ...
Frequency comb laser spectroscopy in the vacuum-ultraviolet region
1/30 of a vuv cycle). The produced vuv pulses are well suited to perform frequency comb spectroscopy with sub-MHz accuracy, which is experimentally verified using a Ramsey-type quantum interference scheme to excite a ...