The electronic structure of methane has been studied in detail by the high Performance energy multichannel electron momentum spectrometer developed recently. The accurate electron momentum distributions of the It2 and...The electronic structure of methane has been studied in detail by the high Performance energy multichannel electron momentum spectrometer developed recently. The accurate electron momentum distributions of the It2 and 2a1 valence.orbitals of methane are measured. Excellent,agreernent can be found between the experimental data and the calculittions using the HartreeFock method and CI method with the 146-GTO basis functions. In the inner valnce regionclearly satellite structures of the 2a1 orbita1 are observed. The experimental binding energiesand pole strengths are compared with the result, of 2ph-TDA Green function’s calculation. EMSmeasurements and the 2ph-IDA calculation can give The consistent values of binding energies,while the 2ph-TDA calculation is found to overestimate the mam peak intensity of 2a1 orbit,andmderestimate the intensity of satallite structures.展开更多
In this letter, the development of an electron momentum spectrometer, which is the first in China, has been described shortly, and using this spectrometer, the experimental results on the electron momentum spectroscop...In this letter, the development of an electron momentum spectrometer, which is the first in China, has been described shortly, and using this spectrometer, the experimental results on the electron momentum spectroscopy of helium were reported.展开更多
Based on the experimental results of electron momentum spectroscopy of helium, the test of three wavehactions for the ground state of hellum has been performed.The conclusioll is that electron momentum spectroscopy is...Based on the experimental results of electron momentum spectroscopy of helium, the test of three wavehactions for the ground state of hellum has been performed.The conclusioll is that electron momentum spectroscopy is an useful tool for testing electron wavefunctions of atoms and molecules.展开更多
文摘The electronic structure of methane has been studied in detail by the high Performance energy multichannel electron momentum spectrometer developed recently. The accurate electron momentum distributions of the It2 and 2a1 valence.orbitals of methane are measured. Excellent,agreernent can be found between the experimental data and the calculittions using the HartreeFock method and CI method with the 146-GTO basis functions. In the inner valnce regionclearly satellite structures of the 2a1 orbita1 are observed. The experimental binding energiesand pole strengths are compared with the result, of 2ph-TDA Green function’s calculation. EMSmeasurements and the 2ph-IDA calculation can give The consistent values of binding energies,while the 2ph-TDA calculation is found to overestimate the mam peak intensity of 2a1 orbit,andmderestimate the intensity of satallite structures.
文摘In this letter, the development of an electron momentum spectrometer, which is the first in China, has been described shortly, and using this spectrometer, the experimental results on the electron momentum spectroscopy of helium were reported.
文摘Based on the experimental results of electron momentum spectroscopy of helium, the test of three wavehactions for the ground state of hellum has been performed.The conclusioll is that electron momentum spectroscopy is an useful tool for testing electron wavefunctions of atoms and molecules.
