Excitation of nuclei in a hot, dense plasma: Feasibility of experiments with 201Hg |
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| Authors: | A V Andreev V M Gordienko A B Savel’ev E V Tkalya A M Dykhne |
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| Institution: | (1) M. V. Lomonosov Moscow State University, 119899 Moscow, Russia;(2) Troitsk Insitute of Innovational and Thermonuclear Studies, Russia |
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| Abstract: | It is shown that in a plasma produced on the surface of a sample consisting of a natural mixture of mercury isotopes, ∼104−105
201Hg nuclei can be excited into the low-lying isomeric level 1/2− (1.561 keV) by an ultrashort laser pulse with energy ≈1 J, duration ≈200 fs, and intensity ≈1016 W/cm2 and the lifetime of the level can be determined. Possible mechanisms leading to the excitation of 201Hg nuclei by photons and electrons in a dense, hot plasma are examined and the cross sections of the processes are estimated.
Schemes for detecting the effect are proposed.
Pis’ma Zh. éksp. Teor. Fiz. 66, No. 5, 312–316 (10 September 1997) |
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