DIRECT TWO-PHOTON EXCITATION OF ISOMERIC TRANSITION IN THORIUM-229 NUCLEUS

被引：0

作者：

Romanenko, V. I. ^{[1
]}

Udovitskaya, Ye. G. ^{[1
]}

Yatsenko, L. P. ^{[1
]}

Romanenko, A. V. ^{[2
]}

Litvinov, A. N. ^{[3
]}

Kazakov, G. A. ^{[3
,4
]}

机构：

[1] Nat Acad Sci Ukraine, Inst Phys, 46,Nauky Ave, UA-03680 Kiev, Ukraine

[2] Taras Shevchenko Natl Univ Kyiv, UA-03022 Kiev, Ukraine

[3] St Petersburg State Polytech Univ, St Petersburg 195251, Russia

[4] Vienna Univ Technol, Inst Atom & Subat Phys, A-1020 Vienna, Austria

来源：

UKRAINIAN JOURNAL OF PHYSICS | 2012年 / 57卷 / 11期

基金：

俄罗斯基础研究基金会; 奥地利科学基金会;

关键词：

D O I：

暂无

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

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 light pulses 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 10(18) cm(-3) and irradiated with a laser radiation 10 W in power, the emission of several photons per second with a wavelength of about 160 nm becomes possible.

引用

页码：1119 / 1131

页数：13

共 27 条

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