A velocity map imaging detector with an integrated gas injection system
作者： O. Ghafur , W. Siu , P. Johnsson , M. F. Kling , M. Drescher
DOI: 10.1063/1.3085799
关键词:
摘要: We present the design of a velocity map imaging spectrometer where target gas is injected from capillary that integrated in repeller plate ion optics assembly drives electrons/ions formed by ionization or dissociation to two-dimensional detector. The geometry this allows use densities interaction region are two three orders magnitude higher than used standard spectrometers, making detector suitable for working with weak light sources such as newly developed attosecond pulse sources, (quasi-)cw synchrotrons. In test monoenergetic photoelectrons were generated six-photon Xe (utilizing second harmonic neodymium doped Nd:YAG), kinetic energy resolution was found be DeltaE/E=1.8%. This number good agreement Monte Carlo simulations.
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