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Metallic Na formation in/on NaCl crystals with irradiation by electron or vacuum ultraviolet photons |
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| Authors: | Shigehiro Owaki Shigeko Koyama Masao Takahashi Masao Kamada Ryouichi Suzuki |
| Institution: | a College of Integrated Arts and Sciences, Osaka Prefecture University, Sakai, Osaka 593, Japan b ISIR, Osaka University, Ibaraki, Osaka, 567, Japan c Institute of Molecular Science, Okazaki, Aichi 444, Japan d Electrotechnical Laboratory, Tsukuba, Ibaraki 305, Japan |
| Abstract: | Metallic Na was formed in/on NaCl single crystals by irradiating them with a variety of radiation sources, namely, 21 MeV electron pulses, an electron beam of 30 keV and photon fluxes in the VUV region. The physical states were analysed using several methods, optical absorption, lifetime measurement of positron annihilation, Auger electron spectroscopy and UV photoelectron spectroscopy. Metallic Na was obtained in different physical states; clusters were formed in bulk, thin layers (islands) and thick layers on the surface. |
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