Author:
Romanenko V.I.,Udovitskaya Ye.G.,Yatsenko L.P.,Romanenko A.V.,Litvinov A.N.,Kazakov G.A.
Abstract
A possibility of the two-photon excitation of an isomeric state in a nucleus of thorium-229 has been discussed. The fluorescence intensity of the excitation is demonstrated to be identical for the irradiation of nuclei with either monochromatic light or polychromatic radiation consisting of a sequence of short lightpulses of the same intensity. The two-photon excitation of Th3+ ion in an electromagnetic trap with a focused laser beam with a wavelength of about 320 nm and power of 100 mW can lead to the absorption saturation, at which the fluorescence emission with the frequency of the transition in a nucleus is maximal. In crystals doped with Th4+ to a concentration of about 1018 cm-3 and irradiated with a laser radiation 10 W in power, the emission of several photons persecond with a wavelength of about 160 nm becomes possible.
Publisher
National Academy of Sciences of Ukraine (Co. LTD Ukrinformnauka) (Publications)
Subject
General Physics and Astronomy
Reference29 articles.
1. 1. W. Markowitz, R. Glenn Hall, L. Essen, and J.V.L. Parry, Phys. Rev. Lett. 1, 105 (1958).
2. 2. T.E. Parker, Metrologia 47, 1 (2010).
3. 3. C.W. Chou, D.B. Hume, J.C.J. Koelemeij, D.J. Wineland, and T. Rosenband, Phys. Rev. Lett. 104, 070802 (2010).
4. 4. B.R. Beck, C.Y. Wu, P. Beiersdorfer, G.V. Brown, J.A. Becker, K.J. Moody, J.B. Wilhelmy, F.S. Porter, C.A Kilbourne, and R.L. Kelley, in Proceedings of the 12th International Conference on Nuclear Reaction Mechanisms, Varenna, Italy, 2009 (2009), paper LLNL-PROC-415170.
5. 5. E. Peters, S.A. Diddams, P. Fendel, S. Reinhardt, T.W. Hansch, and Th. Udem, Opt. Express 17, 9183 (2009).
Cited by
1 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献