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Miyabe, Masabumi; Satou, Yukihiko; Wakaida, Ikuo; Terabayashi, Ryohei*; Sonnenschein, V.*; Tomita, Hideki*; Zhao, Y.*; Sakamoto, Tetsuo*
Journal of Physics B; Atomic, Molecular and Optical Physics, 54(14), p.145003_1 - 145003_8, 2021/07
Times Cited Count:0 Percentile:0.01(Optics)Two-color two-step photoionization optogalvanic spectroscopy was performed using high-repetition-rate titanium sapphire lasers and a uranium hollow cathode lamp to find the two-step resonance ionization schemes of uranium. Many ionization transitions were observed by exciting uranium atoms in a ground state into five, even parity, excited levels with the first-step laser and by scanning the second-step laser wavelengths. By blocking the first-step laser, single-color, two-photon ionization transitions were also identified. From these results, we have found more than 50 odd-parity autoionizing levels of uranium in the energy, ranging from the ionization potential (49958.4 cm) to 51150 cm. The determined energy levels are within 1 cm of previously reported values.
Miyabe, Masabumi; Geppert, C.*; Oba, Masaki; Wakaida, Ikuo; Wendt, K.*
Journal of Physics B; Atomic, Molecular and Optical Physics, 35(18), p.3865 - 3877, 2002/09
Times Cited Count:12 Percentile:50.16(Optics)no abstracts in English
Ogura, Koichi; Shibata, Takemasa
JAERI-Research 98-060, 11 Pages, 1998/11
no abstracts in English
Ogura, Koichi; Shibata, Takemasa
Japanese Journal of Applied Physics, Part 2, 37(11B), p.L1403 - L1405, 1998/11
Times Cited Count:3 Percentile:18.91(Physics, Applied)no abstracts in English
Ogura, Koichi; Shibata, Takemasa
JAERI-Research 98-036, 15 Pages, 1998/07
no abstracts in English
Ogura, Koichi; Shibata, Takemasa
Atomic Collision Research in Japan,No. 22, 0, 74 Pages, 1996/00
no abstracts in English