Crossed beam photodissociation imaging of HeH+ with vacuum ultraviolet free-electron laser pulses
摘要：
Molecular photofragmentation has been studied by event imaging on HeH+ ions at 32 nm (38.7 eV) in a fast ion beam crossed with the free-electron laser in Hamburg (FLASH), analyzing neutral He product directions and energies. Fragmentation into He(1snl,n > or = 2)+H+ was observed to yield significant photodissociation at 32 nm with an absolute cross section of (1.4+/-0.7) x 10(-18) cm2, releasing energies of 10-20 eV. A clear dominance of photodissociation perpendicular to the laser polarization was found in contrast to the excitation paths so far emphasized in theoretical studies.
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关键词：
state estimate data assimilation ocean circulation adjoint method method of lagrange multipliers
DOI：
http://dx.doi.org/10.1103/PhysRevLett.98.223202
被引量：
年份：
2007
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