caa a22 4500 445370009 CHVBK 20180317142943.0 cr unu---uuuuu 170323e20110901xx s 000 0 eng 10.1007/s00340-011-4630-0 doi (NATIONALLICENCE)springer-10.1007/s00340-011-4630-0 Oxygen isotope separation utilizing two-frequency infrared multiphoton dissociation of 2,3-dihydropyran [Elektronische Daten] [M. Hashimoto, H. Ohba, A. Yokoyama] Oxygen isotope separation has been examined by utilizing the two-frequency infrared multiphoton dissociation (IRMPD) of 2,3-dihydropyran (DHP). The two-frequency IRMPD reduces the required laser fluences to those lower than the damage threshold of optical windows. For example, dissociation probability of DHP containing 18O (D(18O)) and enrichment factor (S) were obtained to be 1.6×10−3/pulse and 316, respectively, by the simultaneous irradiation with 1052.2cm−1 photons at 0.45J/cm2 and 1031.5cm−1 photons at 1.06J/cm2. These are comparable with D(18O)=2.2×10−3/pulse and S=391 obtained by the single-frequency irradiation of 1033.5cm−1 photons at 2.2J/cm2. Therefore, the production rate of an 18O enriched dissociation product has been increased to four times or more, compared with the single-frequency IRMPD, and this two-frequency method would promise a practical large scale separation. Springer-Verlag, 2011 Hashimoto M. Quantum Beam Science Directorate, Kansai Photon Science Institute, Japan Atomic Energy Agency, 619-0215, Kizugawa, Kyoto, Japan aut Ohba H. Quantum Beam Science Directorate, Tokai Research and Development Center, Japan Atomic Energy Agency, 319-1195, Tokai, Ibaraki, Japan aut Yokoyama A. Quantum Beam Science Directorate, Kansai Photon Science Institute, Japan Atomic Energy Agency, 619-0215, Kizugawa, Kyoto, Japan aut Applied Physics B Springer-Verlag 104/4(2011-09-01), 969-974 0946-2171 104:4<969 2011 104 340 https://doi.org/10.1007/s00340-011-4630-0 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00340-011-4630-0 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Hashimoto M. Quantum Beam Science Directorate, Kansai Photon Science Institute, Japan Atomic Energy Agency, 619-0215, Kizugawa, Kyoto, Japan aut NATIONALLICENCE 700 1- Ohba H. Quantum Beam Science Directorate, Tokai Research and Development Center, Japan Atomic Energy Agency, 319-1195, Tokai, Ibaraki, Japan aut NATIONALLICENCE 700 1- Yokoyama A. Quantum Beam Science Directorate, Kansai Photon Science Institute, Japan Atomic Energy Agency, 619-0215, Kizugawa, Kyoto, Japan aut NATIONALLICENCE 773 0- Applied Physics B Springer-Verlag 104/4(2011-09-01), 969-974 0946-2171 104:4<969 2011 104 340 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer